fix mcp tools corrupting session

Allow piping content to opencode run when no message arguments are provided, enabling standard Unix pipe patterns for better CLI integration.

🤖 Generated with [opencode](https://opencode.ai)

Co-Authored-By: opencode <noreply@opencode.ai>

.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*]
+charset = utf-8
+insert_final_newline = true
+end_of_line = lf
+indent_style = space
+indent_size = 2
+max_line_length = 80

.github/workflows/deploy.yml

@@ -0,0 +1,26 @@
+name: deploy
+
+on:
+  push:
+    branches:
+      - dev
+      - production
+  workflow_dispatch:
+
+concurrency: ${{ github.workflow }}-${{ github.ref }}
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: oven-sh/setup-bun@v1
+        with:
+          bun-version: 1.2.17
+
+      - run: bun install
+
+      - run: bun sst deploy --stage=${{ github.ref_name }}
+        env:
+          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}

.github/workflows/publish.yml

@@ -0,0 +1,63 @@
+name: publish
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - dev
+    tags:
+      - "*"
+
+concurrency: ${{ github.workflow }}-${{ github.ref }}
+
+permissions:
+  contents: write
+  packages: write
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - run: git fetch --force --tags
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: ">=1.24.0"
+          cache: true
+          cache-dependency-path: go.sum
+
+      - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: 1.2.17
+
+      - name: Install makepkg
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y pacman-package-manager
+
+      - name: Setup SSH for AUR
+        run: |
+          mkdir -p ~/.ssh
+          echo "${{ secrets.AUR_KEY }}" > ~/.ssh/id_rsa
+          chmod 600 ~/.ssh/id_rsa
+          ssh-keyscan -H aur.archlinux.org >> ~/.ssh/known_hosts
+          git config --global user.email "opencode@sst.dev"
+          git config --global user.name "opencode"
+
+      - name: Publish
+        run: |
+          bun install
+          if [ "${{ startsWith(github.ref, 'refs/tags/') }}" = "true" ]; then
+            ./script/publish.ts
+          else
+            ./script/publish.ts --snapshot
+          fi
+        working-directory: ./packages/opencode
+        env:
+          GITHUB_TOKEN: ${{ secrets.SST_GITHUB_TOKEN }}
+          AUR_KEY: ${{ secrets.AUR_KEY }}
+          NPM_CONFIG_TOKEN: ${{ secrets.NPM_TOKEN }}

.github/workflows/stats.yml

@@ -0,0 +1,32 @@
+name: stats
+
+on:
+  schedule:
+    - cron: "0 12 * * *" # Run daily at 12:00 UTC
+  workflow_dispatch: # Allow manual trigger
+
+jobs:
+  stats:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - name: Run stats script
+        run: bun scripts/stats.ts
+
+      - name: Commit stats
+        run: |
+          git config --local user.email "action@github.com"
+          git config --local user.name "GitHub Action"
+          git add STATS.md
+          git diff --staged --quiet || git commit -m "ignore: update download stats $(date -I)"
+          git push

.gitignore

@@ -0,0 +1,8 @@
+.DS_Store
+node_modules
+.opencode
+.sst
+.env
+.idea
+.vscode
+openapi.json

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 opencode
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -0,0 +1,79 @@
+<p align="center">
+  <a href="https://opencode.ai">
+    <picture>
+      <source srcset="packages/web/src/assets/logo-ornate-dark.svg" media="(prefers-color-scheme: dark)">
+      <source srcset="packages/web/src/assets/logo-ornate-light.svg" media="(prefers-color-scheme: light)">
+      <img src="packages/web/src/assets/logo-ornate-light.svg" alt="opencode logo">
+    </picture>
+  </a>
+</p>
+<p align="center">AI coding agent, built for the terminal.</p>
+<p align="center">
+  <a href="https://discord.gg/opencode"><img alt="Discord" src="https://img.shields.io/discord/1391832426048651334?style=flat-square&label=discord" /></a>
+  <a href="https://www.npmjs.com/package/opencode-ai"><img alt="npm" src="https://img.shields.io/npm/v/opencode-ai?style=flat-square" /></a>
+  <a href="https://github.com/sst/opencode/actions/workflows/publish.yml"><img alt="Build status" src="https://img.shields.io/github/actions/workflow/status/sst/opencode/publish.yml?style=flat-square&branch=dev" /></a>
+</p>
+
+[![opencode Terminal UI](packages/web/src/assets/lander/screenshot.png)](https://opencode.ai)
+
+---
+
+### Installation
+
+```bash
+# YOLO
+curl -fsSL https://opencode.ai/install | bash
+
+# Package managers
+npm i -g opencode-ai@latest        # or bun/pnpm/yarn
+brew install sst/tap/opencode      # macOS
+paru -S opencode-bin               # Arch Linux
+```
+
+> **Note:** Remove versions older than 0.1.x before installing
+
+### Documentation
+
+For more info on how to configure opencode [**head over to our docs**](https://opencode.ai/docs).
+
+### Contributing
+
+For any new features we'd appreciate it if you could open an issue first to discuss what you'd like to implement. We're pretty responsive there and it'll save you from working on something that we don't end up using. No need to do this for simpler fixes.
+
+> **Note**: Please talk to us via github issues before spending time working on
+> a new feature
+
+To run opencode locally you need.
+
+- Bun
+- Golang 1.24.x
+
+And run.
+
+```bash
+$ bun install
+$ bun run packages/opencode/src/index.ts
+```
+
+#### Development Notes
+
+**API Client**: After making changes to the TypeScript API endpoints in `packages/opencode/src/server/server.ts`, you will need the opencode team to generate a new stainless sdk for the clients.
+
+### FAQ
+
+#### How is this different than Claude Code?
+
+It's very similar to Claude Code in terms of capability. Here are the key differences:
+
+- 100% open source
+- Not coupled to any provider. Although Anthropic is recommended, opencode can be used with OpenAI, Google or even local models. As models evolve the gaps between them will close and pricing will drop so being provider agnostic is important.
+- A focus on TUI. opencode is built by neovim users and the creators of [terminal.shop](https://terminal.shop); we are going to push the limits of what's possible in the terminal.
+- A client/server architecture. This for example can allow opencode to run on your computer, while you can drive it remotely from a mobile app. Meaning that the TUI frontend is just one of the possible clients.
+
+#### What's the other repo?
+
+The other confusingly named repo has no relation to this one. You can [read the story behind it here](https://x.com/thdxr/status/1933561254481666466).
+
+---
+
+**Join our community** [Discord](https://discord.gg/opencode) | [YouTube](https://www.youtube.com/c/sst-dev) | [X.com](https://x.com/SST_dev)

STATS.md

@@ -0,0 +1,12 @@
+# Download Stats
+
+| Date       | GitHub Downloads | npm Downloads   | Total           |
+| ---------- | ---------------- | --------------- | --------------- |
+| 2025-06-29 | 18,789 (+0)      | 39,420 (+0)     | 58,209 (+0)     |
+| 2025-06-30 | 20,127 (+1,338)  | 41,059 (+1,639) | 61,186 (+2,977) |
+| 2025-07-01 | 22,108 (+1,981)  | 43,745 (+2,686) | 65,853 (+4,667) |
+| 2025-07-02 | 24,814 (+2,706)  | 46,168 (+2,423) | 70,982 (+5,129) |
+| 2025-07-03 | 27,834 (+3,020)  | 49,955 (+3,787) | 77,789 (+6,807) |
+| 2025-07-04 | 30,608 (+2,774)  | 54,758 (+4,803) | 85,366 (+7,577) |
+| 2025-07-05 | 32,524 (+1,916)  | 58,371 (+3,613) | 90,895 (+5,529) |
+| 2025-07-06 | 33,766 (+1,242)  | 59,694 (+1,323) | 93,460 (+2,565) |

bunfig.toml

@@ -0,0 +1,2 @@
+[install]
+exact = true

infra/app.ts

@@ -0,0 +1,46 @@
+export const domain = (() => {
+  if ($app.stage === "production") return "opencode.ai"
+  if ($app.stage === "dev") return "dev.opencode.ai"
+  return `${$app.stage}.dev.opencode.ai`
+})()
+
+const bucket = new sst.cloudflare.Bucket("Bucket")
+
+export const api = new sst.cloudflare.Worker("Api", {
+  domain: `api.${domain}`,
+  handler: "packages/function/src/api.ts",
+  environment: {
+    WEB_DOMAIN: domain,
+  },
+  url: true,
+  link: [bucket],
+  transform: {
+    worker: (args) => {
+      args.logpush = true
+      args.bindings = $resolve(args.bindings).apply((bindings) => [
+        ...bindings,
+        {
+          name: "SYNC_SERVER",
+          type: "durable_object_namespace",
+          className: "SyncServer",
+        },
+      ])
+      args.migrations = {
+        // Note: when releasing the next tag, make sure all stages use tag v2
+        oldTag: $app.stage === "production" ? "" : "v1",
+        newTag: $app.stage === "production" ? "" : "v1",
+        //newSqliteClasses: ["SyncServer"],
+      }
+    },
+  },
+})
+
+new sst.cloudflare.x.Astro("Web", {
+  domain,
+  path: "packages/web",
+  environment: {
+    // For astro config
+    SST_STAGE: $app.stage,
+    VITE_API_URL: api.url,
+  },
+})

install

@@ -0,0 +1,189 @@
+#!/usr/bin/env bash
+set -euo pipefail
+APP=opencode
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+ORANGE='\033[38;2;255;140;0m'
+NC='\033[0m' # No Color
+
+requested_version=${VERSION:-}
+
+os=$(uname -s | tr '[:upper:]' '[:lower:]')
+if [[ "$os" == "darwin" ]]; then
+    os="darwin"
+fi
+arch=$(uname -m)
+
+if [[ "$arch" == "aarch64" ]]; then
+  arch="arm64"
+elif [[ "$arch" == "x86_64" ]]; then
+  arch="x64"
+fi
+
+filename="$APP-$os-$arch.zip"
+
+
+case "$filename" in
+    *"-linux-"*)
+        [[ "$arch" == "x64" || "$arch" == "arm64" ]] || exit 1
+    ;;
+    *"-darwin-"*)
+        [[ "$arch" == "x64" || "$arch" == "arm64" ]] || exit 1
+    ;;
+    *"-windows-"*)
+        [[ "$arch" == "x64" ]] || exit 1
+    ;;
+    *)
+        echo "${RED}Unsupported OS/Arch: $os/$arch${NC}"
+        exit 1
+    ;;
+esac
+
+INSTALL_DIR=$HOME/.opencode/bin
+mkdir -p "$INSTALL_DIR"
+
+if [ -z "$requested_version" ]; then
+    url="https://github.com/sst/opencode/releases/latest/download/$filename"
+    specific_version=$(curl -s https://api.github.com/repos/sst/opencode/releases/latest | awk -F'"' '/"tag_name": "/ {gsub(/^v/, "", $4); print $4}')
+
+    if [[ $? -ne 0 ]]; then
+        echo "${RED}Failed to fetch version information${NC}"
+        exit 1
+    fi
+else
+    url="https://github.com/sst/opencode/releases/download/v${requested_version}/$filename"
+    specific_version=$requested_version
+fi
+
+print_message() {
+    local level=$1
+    local message=$2
+    local color=""
+
+    case $level in
+        info) color="${GREEN}" ;;
+        warning) color="${YELLOW}" ;;
+        error) color="${RED}" ;;
+    esac
+
+    echo -e "${color}${message}${NC}"
+}
+
+check_version() {
+    if command -v opencode >/dev/null 2>&1; then
+        opencode_path=$(which opencode)
+
+
+        ## TODO: check if version is installed
+        # installed_version=$(opencode version)
+        installed_version="0.0.1"
+        installed_version=$(echo $installed_version | awk '{print $2}')
+
+        if [[ "$installed_version" != "$specific_version" ]]; then
+            print_message info "Installed version: ${YELLOW}$installed_version."
+        else
+            print_message info "Version ${YELLOW}$specific_version${GREEN} already installed"
+            exit 0
+        fi
+    fi
+}
+
+download_and_install() {
+    print_message info "Downloading ${ORANGE}opencode ${GREEN}version: ${YELLOW}$specific_version ${GREEN}..."
+    mkdir -p opencodetmp && cd opencodetmp
+    curl -# -L -o "$filename" "$url"
+    unzip -q "$filename"
+    mv opencode "$INSTALL_DIR"
+    cd .. && rm -rf opencodetmp 
+}
+
+check_version
+download_and_install
+
+
+add_to_path() {
+    local config_file=$1
+    local command=$2
+
+    if grep -Fxq "$command" "$config_file"; then
+        print_message info "Command already exists in $config_file, skipping write."
+    elif [[ -w $config_file ]]; then
+        echo -e "\n# opencode" >> "$config_file"
+        echo "$command" >> "$config_file"
+        print_message info "Successfully added ${ORANGE}opencode ${GREEN}to \$PATH in $config_file"
+    else
+        print_message warning "Manually add the directory to $config_file (or similar):"
+        print_message info "  $command"
+    fi
+}
+
+XDG_CONFIG_HOME=${XDG_CONFIG_HOME:-$HOME/.config}
+
+current_shell=$(basename "$SHELL")
+case $current_shell in
+    fish)
+        config_files="$HOME/.config/fish/config.fish"
+    ;;
+    zsh)
+        config_files="$HOME/.zshrc $HOME/.zshenv $XDG_CONFIG_HOME/zsh/.zshrc $XDG_CONFIG_HOME/zsh/.zshenv"
+    ;;
+    bash)
+        config_files="$HOME/.bashrc $HOME/.bash_profile $HOME/.profile $XDG_CONFIG_HOME/bash/.bashrc $XDG_CONFIG_HOME/bash/.bash_profile"
+    ;;
+    ash)
+        config_files="$HOME/.ashrc $HOME/.profile /etc/profile"
+    ;;
+    sh)
+        config_files="$HOME/.ashrc $HOME/.profile /etc/profile"
+    ;;
+    *)
+        # Default case if none of the above matches
+        config_files="$HOME/.bashrc $HOME/.bash_profile $XDG_CONFIG_HOME/bash/.bashrc $XDG_CONFIG_HOME/bash/.bash_profile"
+    ;;
+esac
+
+config_file=""
+for file in $config_files; do
+    if [[ -f $file ]]; then
+        config_file=$file
+        break
+    fi
+done
+
+if [[ -z $config_file ]]; then
+    print_message error "No config file found for $current_shell. Checked files: ${config_files[@]}"
+    exit 1
+fi
+
+if [[ ":$PATH:" != *":$INSTALL_DIR:"* ]]; then
+    case $current_shell in
+        fish)
+            add_to_path "$config_file" "fish_add_path $INSTALL_DIR"
+        ;;
+        zsh)
+            add_to_path "$config_file" "export PATH=$INSTALL_DIR:\$PATH"
+        ;;
+        bash)
+            add_to_path "$config_file" "export PATH=$INSTALL_DIR:\$PATH"
+        ;;
+        ash)
+            add_to_path "$config_file" "export PATH=$INSTALL_DIR:\$PATH"
+        ;;
+        sh)
+            add_to_path "$config_file" "export PATH=$INSTALL_DIR:\$PATH"
+        ;;
+        *)
+            export PATH=$INSTALL_DIR:$PATH
+            print_message warning "Manually add the directory to $config_file (or similar):"
+            print_message info "  export PATH=$INSTALL_DIR:\$PATH"
+        ;;
+    esac
+fi
+
+if [ -n "${GITHUB_ACTIONS-}" ] && [ "${GITHUB_ACTIONS}" == "true" ]; then
+    echo "$INSTALL_DIR" >> $GITHUB_PATH
+    print_message info "Added $INSTALL_DIR to \$GITHUB_PATH"
+fi
+

opencode.json

@@ -0,0 +1,25 @@
+{
+  "$schema": "https://opencode.ai/config.json",
+  "mcp": {
+    "weather": {
+      "type": "local",
+      "command": ["opencode", "x", "@h1deya/mcp-server-weather"]
+    }
+  },
+  "experimental": {
+    "hook": {
+      "file_edited": {
+        ".json": [
+          {
+            "command": ["bun", "run", "prettier", "$FILE"]
+          }
+        ]
+      },
+      "session_completed": [
+        {
+          "command": ["touch", "./node_modules/foo"]
+        }
+      ]
+    }
+  }
+}

package.json

@@ -0,0 +1,45 @@
+{
+  "$schema": "https://json.schemastore.org/package.json",
+  "name": "opencode",
+  "private": true,
+  "type": "module",
+  "packageManager": "bun@1.2.14",
+  "scripts": {
+    "dev": "bun run packages/opencode/src/index.ts",
+    "typecheck": "bun run --filter='*' typecheck",
+    "stainless": "bun run ./packages/opencode/src/index.ts serve ",
+    "postinstall": "./scripts/hooks"
+  },
+  "workspaces": {
+    "packages": [
+      "packages/*"
+    ],
+    "catalog": {
+      "typescript": "5.8.2",
+      "@types/node": "22.13.9",
+      "zod": "3.25.49",
+      "ai": "5.0.0-beta.7"
+    }
+  },
+  "devDependencies": {
+    "prettier": "3.5.3",
+    "sst": "3.17.8"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/sst/opencode"
+  },
+  "license": "MIT",
+  "prettier": {
+    "semi": false,
+    "printWidth": 120
+  },
+  "trustedDependencies": [
+    "esbuild",
+    "protobufjs",
+    "sharp"
+  ],
+  "patchedDependencies": {
+    "ai@4.3.16": "patches/ai@4.3.16.patch"
+  }
+}

packages/function/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "@opencode/function",
+  "version": "0.0.1",
+  "$schema": "https://json.schemastore.org/package.json",
+  "private": true,
+  "type": "module",
+  "devDependencies": {
+    "@cloudflare/workers-types": "4.20250522.0",
+    "typescript": "catalog:",
+    "@types/node": "catalog:"
+  }
+}

packages/function/src/api.ts

@@ -0,0 +1,222 @@
+import { DurableObject } from "cloudflare:workers"
+import { randomUUID } from "node:crypto"
+
+type Env = {
+  SYNC_SERVER: DurableObjectNamespace<SyncServer>
+  Bucket: R2Bucket
+  WEB_DOMAIN: string
+}
+
+export class SyncServer extends DurableObject<Env> {
+  constructor(ctx: DurableObjectState, env: Env) {
+    super(ctx, env)
+  }
+  async fetch() {
+    console.log("SyncServer subscribe")
+
+    const webSocketPair = new WebSocketPair()
+    const [client, server] = Object.values(webSocketPair)
+
+    this.ctx.acceptWebSocket(server)
+
+    const data = await this.ctx.storage.list()
+    Array.from(data.entries())
+      .filter(([key, _]) => key.startsWith("session/"))
+      .map(([key, content]) => server.send(JSON.stringify({ key, content })))
+
+    return new Response(null, {
+      status: 101,
+      webSocket: client,
+    })
+  }
+
+  async webSocketMessage(ws, message) {}
+
+  async webSocketClose(ws, code, reason, wasClean) {
+    ws.close(code, "Durable Object is closing WebSocket")
+  }
+
+  async publish(key: string, content: any) {
+    const sessionID = await this.getSessionID()
+    if (!key.startsWith(`session/info/${sessionID}`) && !key.startsWith(`session/message/${sessionID}/`))
+      return new Response("Error: Invalid key", { status: 400 })
+
+    // store message
+    await this.env.Bucket.put(`share/${key}.json`, JSON.stringify(content), {
+      httpMetadata: {
+        contentType: "application/json",
+      },
+    })
+    await this.ctx.storage.put(key, content)
+    const clients = this.ctx.getWebSockets()
+    console.log("SyncServer publish", key, "to", clients.length, "subscribers")
+    for (const client of clients) {
+      client.send(JSON.stringify({ key, content }))
+    }
+  }
+
+  public async share(sessionID: string) {
+    let secret = await this.getSecret()
+    if (secret) return secret
+    secret = randomUUID()
+
+    await this.ctx.storage.put("secret", secret)
+    await this.ctx.storage.put("sessionID", sessionID)
+
+    return secret
+  }
+
+  public async getData() {
+    const data = await this.ctx.storage.list()
+    return Array.from(data.entries())
+      .filter(([key, _]) => key.startsWith("session/"))
+      .map(([key, content]) => ({ key, content }))
+  }
+
+  public async assertSecret(secret: string) {
+    if (secret !== (await this.getSecret())) throw new Error("Invalid secret")
+  }
+
+  private async getSecret() {
+    return this.ctx.storage.get<string>("secret")
+  }
+
+  private async getSessionID() {
+    return this.ctx.storage.get<string>("sessionID")
+  }
+
+  async clear() {
+    const sessionID = await this.getSessionID()
+    const list = await this.env.Bucket.list({
+      prefix: `session/message/${sessionID}/`,
+      limit: 1000,
+    })
+    for (const item of list.objects) {
+      await this.env.Bucket.delete(item.key)
+    }
+    await this.env.Bucket.delete(`session/info/${sessionID}`)
+    await this.ctx.storage.deleteAll()
+  }
+
+  static shortName(id: string) {
+    return id.substring(id.length - 8)
+  }
+}
+
+export default {
+  async fetch(request: Request, env: Env, ctx: ExecutionContext) {
+    const url = new URL(request.url)
+    const splits = url.pathname.split("/")
+    const method = splits[1]
+
+    if (request.method === "GET" && method === "") {
+      return new Response("Hello, world!", {
+        headers: { "Content-Type": "text/plain" },
+      })
+    }
+
+    if (request.method === "POST" && method === "share_create") {
+      const body = await request.json<any>()
+      const sessionID = body.sessionID
+      const short = SyncServer.shortName(sessionID)
+      const id = env.SYNC_SERVER.idFromName(short)
+      const stub = env.SYNC_SERVER.get(id)
+      const secret = await stub.share(sessionID)
+      return new Response(
+        JSON.stringify({
+          secret,
+          url: `https://${env.WEB_DOMAIN}/s/${short}`,
+        }),
+        {
+          headers: { "Content-Type": "application/json" },
+        },
+      )
+    }
+
+    if (request.method === "POST" && method === "share_delete") {
+      const body = await request.json<any>()
+      const sessionID = body.sessionID
+      const secret = body.secret
+      const id = env.SYNC_SERVER.idFromName(SyncServer.shortName(sessionID))
+      const stub = env.SYNC_SERVER.get(id)
+      await stub.assertSecret(secret)
+      await stub.clear()
+      return new Response(JSON.stringify({}), {
+        headers: { "Content-Type": "application/json" },
+      })
+    }
+
+    if (request.method === "POST" && method === "share_delete_admin") {
+      const id = env.SYNC_SERVER.idFromName("oVF8Rsiv")
+      const stub = env.SYNC_SERVER.get(id)
+      await stub.clear()
+      return new Response(JSON.stringify({}), {
+        headers: { "Content-Type": "application/json" },
+      })
+    }
+
+    if (request.method === "POST" && method === "share_sync") {
+      const body = await request.json<{
+        sessionID: string
+        secret: string
+        key: string
+        content: any
+      }>()
+      const name = SyncServer.shortName(body.sessionID)
+      const id = env.SYNC_SERVER.idFromName(name)
+      const stub = env.SYNC_SERVER.get(id)
+      await stub.assertSecret(body.secret)
+      await stub.publish(body.key, body.content)
+      return new Response(JSON.stringify({}), {
+        headers: { "Content-Type": "application/json" },
+      })
+    }
+
+    if (request.method === "GET" && method === "share_poll") {
+      const upgradeHeader = request.headers.get("Upgrade")
+      if (!upgradeHeader || upgradeHeader !== "websocket") {
+        return new Response("Error: Upgrade header is required", {
+          status: 426,
+        })
+      }
+      const id = url.searchParams.get("id")
+      console.log("share_poll", id)
+      if (!id) return new Response("Error: Share ID is required", { status: 400 })
+      const stub = env.SYNC_SERVER.get(env.SYNC_SERVER.idFromName(id))
+      return stub.fetch(request)
+    }
+
+    if (request.method === "GET" && method === "share_data") {
+      const id = url.searchParams.get("id")
+      console.log("share_data", id)
+      if (!id) return new Response("Error: Share ID is required", { status: 400 })
+      const stub = env.SYNC_SERVER.get(env.SYNC_SERVER.idFromName(id))
+      const data = await stub.getData()
+
+      let info
+      const messages: Record<string, any> = {}
+      data.forEach((d) => {
+        const [root, type, ...splits] = d.key.split("/")
+        if (root !== "session") return
+        if (type === "info") {
+          info = d.content
+          return
+        }
+        if (type === "message") {
+          const [, messageID] = splits
+          messages[messageID] = d.content
+        }
+      })
+
+      return new Response(
+        JSON.stringify({
+          info,
+          messages,
+        }),
+        {
+          headers: { "Content-Type": "application/json" },
+        },
+      )
+    }
+  },
+}

packages/function/sst-env.d.ts

@@ -0,0 +1,25 @@
+/* This file is auto-generated by SST. Do not edit. */
+/* tslint:disable */
+/* eslint-disable */
+/* deno-fmt-ignore-file */
+
+import "sst"
+declare module "sst" {
+  export interface Resource {
+    Web: {
+      type: "sst.cloudflare.Astro"
+      url: string
+    }
+  }
+}
+// cloudflare
+import * as cloudflare from "@cloudflare/workers-types"
+declare module "sst" {
+  export interface Resource {
+    Api: cloudflare.Service
+    Bucket: cloudflare.R2Bucket
+  }
+}
+
+import "sst"
+export {}

packages/function/tsconfig.json

@@ -0,0 +1,9 @@
+{
+  "$schema": "https://json.schemastore.org/tsconfig",
+  "extends": "@tsconfig/node22/tsconfig.json",
+  "compilerOptions": {
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "types": ["@cloudflare/workers-types", "node"]
+  }
+}

packages/opencode/.gitignore

@@ -0,0 +1,4 @@
+research
+dist
+gen
+app.log

packages/opencode/AGENTS.md

@@ -0,0 +1,40 @@
+# opencode agent guidelines
+
+## Build/Test Commands
+
+- **Install**: `bun install`
+- **Run**: `bun run index.ts`
+- **Typecheck**: `bun run typecheck` (npm run typecheck)
+- **Test**: `bun test` (runs all tests)
+- **Single test**: `bun test test/tool/tool.test.ts` (specific test file)
+
+## Code Style
+
+- **Runtime**: Bun with TypeScript ESM modules
+- **Imports**: Use relative imports for local modules, named imports preferred
+- **Types**: Zod schemas for validation, TypeScript interfaces for structure
+- **Naming**: camelCase for variables/functions, PascalCase for classes/namespaces
+- **Error handling**: Use Result patterns, avoid throwing exceptions in tools
+- **File structure**: Namespace-based organization (e.g., `Tool.define()`, `Session.create()`)
+
+## IMPORTANT
+
+- Try to keep things in one function unless composable or reusable
+- DO NOT do unnecessary destructuring of variables
+- DO NOT use `else` statements unless necessary
+- DO NOT use `try`/`catch` if it can be avoided
+- AVOID `try`/`catch` where possible
+- AVOID `else` statements
+- AVOID using `any` type
+- AVOID `let` statements
+- PREFER single word variable names where possible
+- Use as many bun apis as possible like Bun.file()
+
+## Architecture
+
+- **Tools**: Implement `Tool.Info` interface with `execute()` method
+- **Context**: Pass `sessionID` in tool context, use `App.provide()` for DI
+- **Validation**: All inputs validated with Zod schemas
+- **Logging**: Use `Log.create({ service: "name" })` pattern
+- **Storage**: Use `Storage` namespace for persistence
+- **API Client**: Go TUI communicates with TypeScript server via stainless SDK. When adding/modifying server endpoints in `packages/opencode/src/server/server.ts`, ask the user to generate a new client SDK to proceed with client-side changes.

packages/opencode/README.md

@@ -0,0 +1,15 @@
+# js
+
+To install dependencies:
+
+```bash
+bun install
+```
+
+To run:
+
+```bash
+bun run index.ts
+```
+
+This project was created using `bun init` in bun v1.2.12. [Bun](https://bun.sh) is a fast all-in-one JavaScript runtime.

packages/opencode/bin/opencode

@@ -0,0 +1,61 @@
+#!/bin/sh
+set -e
+
+if [ -n "$OPENCODE_BIN_PATH" ]; then
+    resolved="$OPENCODE_BIN_PATH"
+else
+    # Get the real path of this script, resolving any symlinks
+    script_path="$0"
+    while [ -L "$script_path" ]; do
+        link_target="$(readlink "$script_path")"
+        case "$link_target" in
+            /*) script_path="$link_target" ;;
+            *) script_path="$(dirname "$script_path")/$link_target" ;;
+        esac
+    done
+    script_dir="$(dirname "$script_path")"
+    script_dir="$(cd "$script_dir" && pwd)"
+    
+    # Map platform names
+    case "$(uname -s)" in
+        Darwin) platform="darwin" ;;
+        Linux) platform="linux" ;;
+        MINGW*|CYGWIN*|MSYS*) platform="win32" ;;
+        *) platform="$(uname -s | tr '[:upper:]' '[:lower:]')" ;;
+    esac
+    
+    # Map architecture names  
+    case "$(uname -m)" in
+        x86_64|amd64) arch="x64" ;;
+        aarch64) arch="arm64" ;;
+        armv7l) arch="arm" ;;
+        *) arch="$(uname -m)" ;;
+    esac
+    
+    name="opencode-${platform}-${arch}"
+    binary="opencode"
+    [ "$platform" = "win32" ] && binary="opencode.exe"
+    
+    # Search for the binary starting from real script location
+    resolved=""
+    current_dir="$script_dir"
+    while [ "$current_dir" != "/" ]; do
+        candidate="$current_dir/node_modules/$name/bin/$binary"
+        if [ -f "$candidate" ]; then
+            resolved="$candidate"
+            break
+        fi
+        current_dir="$(dirname "$current_dir")"
+    done
+    
+    if [ -z "$resolved" ]; then
+        printf "It seems that your package manager failed to install the right version of the opencode CLI for your platform. You can try manually installing the \"%s\" package\n" "$name" >&2
+        exit 1
+    fi
+fi
+
+# Handle SIGINT gracefully
+trap '' INT
+
+# Execute the binary with all arguments
+exec "$resolved" "$@"

packages/opencode/bin/opencode.cmd

@@ -0,0 +1,56 @@
+@echo off
+setlocal enabledelayedexpansion
+
+if defined OPENCODE_BIN_PATH (
+    set "resolved=%OPENCODE_BIN_PATH%"
+    goto :execute
+)
+
+rem Get the directory of this script
+set "script_dir=%~dp0"
+set "script_dir=%script_dir:~0,-1%"
+
+rem Detect platform and architecture
+set "platform=win32"
+
+rem Detect architecture
+if "%PROCESSOR_ARCHITECTURE%"=="AMD64" (
+    set "arch=x64"
+) else if "%PROCESSOR_ARCHITECTURE%"=="ARM64" (
+    set "arch=arm64"
+) else if "%PROCESSOR_ARCHITECTURE%"=="x86" (
+    set "arch=x86"
+) else (
+    set "arch=x64"
+)
+
+set "name=opencode-!platform!-!arch!"
+set "binary=opencode.exe"
+
+rem Search for the binary starting from script location
+set "resolved="
+set "current_dir=%script_dir%"
+
+:search_loop
+set "candidate=%current_dir%\node_modules\%name%\bin\%binary%"
+if exist "%candidate%" (
+    set "resolved=%candidate%"
+    goto :execute
+)
+
+rem Move up one directory
+for %%i in ("%current_dir%") do set "parent_dir=%%~dpi"
+set "parent_dir=%parent_dir:~0,-1%"
+
+rem Check if we've reached the root
+if "%current_dir%"=="%parent_dir%" goto :not_found
+set "current_dir=%parent_dir%"
+goto :search_loop
+
+:not_found
+echo It seems that your package manager failed to install the right version of the opencode CLI for your platform. You can try manually installing the "%name%" package >&2
+exit /b 1
+
+:execute
+rem Execute the binary with all arguments
+"%resolved%" %*

packages/opencode/config.schema.json

@@ -0,0 +1,369 @@
+{
+  "type": "object",
+  "properties": {
+    "$schema": {
+      "type": "string",
+      "description": "JSON schema reference for configuration validation"
+    },
+    "theme": {
+      "type": "string",
+      "description": "Theme name to use for the interface"
+    },
+    "keybinds": {
+      "type": "object",
+      "properties": {
+        "leader": {
+          "type": "string",
+          "description": "Leader key for keybind combinations"
+        },
+        "help": {
+          "type": "string",
+          "description": "Show help dialog"
+        },
+        "editor_open": {
+          "type": "string",
+          "description": "Open external editor"
+        },
+        "session_new": {
+          "type": "string",
+          "description": "Create a new session"
+        },
+        "session_list": {
+          "type": "string",
+          "description": "List all sessions"
+        },
+        "session_share": {
+          "type": "string",
+          "description": "Share current session"
+        },
+        "session_interrupt": {
+          "type": "string",
+          "description": "Interrupt current session"
+        },
+        "session_compact": {
+          "type": "string",
+          "description": "Toggle compact mode for session"
+        },
+        "tool_details": {
+          "type": "string",
+          "description": "Show tool details"
+        },
+        "model_list": {
+          "type": "string",
+          "description": "List available models"
+        },
+        "theme_list": {
+          "type": "string",
+          "description": "List available themes"
+        },
+        "project_init": {
+          "type": "string",
+          "description": "Initialize project configuration"
+        },
+        "input_clear": {
+          "type": "string",
+          "description": "Clear input field"
+        },
+        "input_paste": {
+          "type": "string",
+          "description": "Paste from clipboard"
+        },
+        "input_submit": {
+          "type": "string",
+          "description": "Submit input"
+        },
+        "input_newline": {
+          "type": "string",
+          "description": "Insert newline in input"
+        },
+        "history_previous": {
+          "type": "string",
+          "description": "Navigate to previous history item"
+        },
+        "history_next": {
+          "type": "string",
+          "description": "Navigate to next history item"
+        },
+        "messages_page_up": {
+          "type": "string",
+          "description": "Scroll messages up by one page"
+        },
+        "messages_page_down": {
+          "type": "string",
+          "description": "Scroll messages down by one page"
+        },
+        "messages_half_page_up": {
+          "type": "string",
+          "description": "Scroll messages up by half page"
+        },
+        "messages_half_page_down": {
+          "type": "string",
+          "description": "Scroll messages down by half page"
+        },
+        "messages_previous": {
+          "type": "string",
+          "description": "Navigate to previous message"
+        },
+        "messages_next": {
+          "type": "string",
+          "description": "Navigate to next message"
+        },
+        "messages_first": {
+          "type": "string",
+          "description": "Navigate to first message"
+        },
+        "messages_last": {
+          "type": "string",
+          "description": "Navigate to last message"
+        },
+        "app_exit": {
+          "type": "string",
+          "description": "Exit the application"
+        }
+      },
+      "additionalProperties": false,
+      "description": "Custom keybind configurations"
+    },
+    "autoshare": {
+      "type": "boolean",
+      "description": "Share newly created sessions automatically"
+    },
+    "autoupdate": {
+      "type": "boolean",
+      "description": "Automatically update to the latest version"
+    },
+    "disabled_providers": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Disable providers that are loaded automatically"
+    },
+    "model": {
+      "type": "string",
+      "description": "Model to use in the format of provider/model, eg anthropic/claude-2"
+    },
+    "provider": {
+      "type": "object",
+      "additionalProperties": {
+        "type": "object",
+        "properties": {
+          "api": {
+            "type": "string"
+          },
+          "name": {
+            "type": "string"
+          },
+          "env": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            }
+          },
+          "id": {
+            "type": "string"
+          },
+          "npm": {
+            "type": "string"
+          },
+          "models": {
+            "type": "object",
+            "additionalProperties": {
+              "type": "object",
+              "properties": {
+                "name": {
+                  "type": "string"
+                },
+                "attachment": {
+                  "type": "boolean"
+                },
+                "reasoning": {
+                  "type": "boolean"
+                },
+                "temperature": {
+                  "type": "boolean"
+                },
+                "tool_call": {
+                  "type": "boolean"
+                },
+                "cost": {
+                  "type": "object",
+                  "properties": {
+                    "input": {
+                      "type": "number"
+                    },
+                    "output": {
+                      "type": "number"
+                    },
+                    "cache_read": {
+                      "type": "number"
+                    },
+                    "cache_write": {
+                      "type": "number"
+                    }
+                  },
+                  "required": ["input", "output"],
+                  "additionalProperties": false
+                },
+                "limit": {
+                  "type": "object",
+                  "properties": {
+                    "context": {
+                      "type": "number"
+                    },
+                    "output": {
+                      "type": "number"
+                    }
+                  },
+                  "required": ["context", "output"],
+                  "additionalProperties": false
+                },
+                "id": {
+                  "type": "string"
+                },
+                "options": {
+                  "type": "object",
+                  "additionalProperties": {}
+                }
+              },
+              "additionalProperties": false
+            }
+          },
+          "options": {
+            "type": "object",
+            "additionalProperties": {}
+          }
+        },
+        "required": ["models"],
+        "additionalProperties": false
+      },
+      "description": "Custom provider configurations and model overrides"
+    },
+    "mcp": {
+      "type": "object",
+      "additionalProperties": {
+        "anyOf": [
+          {
+            "type": "object",
+            "properties": {
+              "type": {
+                "type": "string",
+                "const": "local",
+                "description": "Type of MCP server connection"
+              },
+              "command": {
+                "type": "array",
+                "items": {
+                  "type": "string"
+                },
+                "description": "Command and arguments to run the MCP server"
+              },
+              "environment": {
+                "type": "object",
+                "additionalProperties": {
+                  "type": "string"
+                },
+                "description": "Environment variables to set when running the MCP server"
+              },
+              "enabled": {
+                "type": "boolean",
+                "description": "Enable or disable the MCP server on startup"
+              }
+            },
+            "required": ["type", "command"],
+            "additionalProperties": false
+          },
+          {
+            "type": "object",
+            "properties": {
+              "type": {
+                "type": "string",
+                "const": "remote",
+                "description": "Type of MCP server connection"
+              },
+              "url": {
+                "type": "string",
+                "description": "URL of the remote MCP server"
+              },
+              "enabled": {
+                "type": "boolean",
+                "description": "Enable or disable the MCP server on startup"
+              }
+            },
+            "required": ["type", "url"],
+            "additionalProperties": false
+          }
+        ]
+      },
+      "description": "MCP (Model Context Protocol) server configurations"
+    },
+    "instructions": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "description": "Additional instruction files or patterns to include"
+    },
+    "experimental": {
+      "type": "object",
+      "properties": {
+        "hook": {
+          "type": "object",
+          "properties": {
+            "file_edited": {
+              "type": "object",
+              "additionalProperties": {
+                "type": "array",
+                "items": {
+                  "type": "object",
+                  "properties": {
+                    "command": {
+                      "type": "array",
+                      "items": {
+                        "type": "string"
+                      }
+                    },
+                    "environment": {
+                      "type": "object",
+                      "additionalProperties": {
+                        "type": "string"
+                      }
+                    }
+                  },
+                  "required": ["command"],
+                  "additionalProperties": false
+                }
+              }
+            },
+            "session_completed": {
+              "type": "array",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "command": {
+                    "type": "array",
+                    "items": {
+                      "type": "string"
+                    }
+                  },
+                  "environment": {
+                    "type": "object",
+                    "additionalProperties": {
+                      "type": "string"
+                    }
+                  }
+                },
+                "required": ["command"],
+                "additionalProperties": false
+              }
+            }
+          },
+          "additionalProperties": false
+        }
+      },
+      "additionalProperties": false
+    }
+  },
+  "additionalProperties": false,
+  "$schema": "http://json-schema.org/draft-07/schema#"
+}

packages/opencode/package.json

@@ -0,0 +1,53 @@
+{
+  "$schema": "https://json.schemastore.org/package.json",
+  "version": "0.0.5",
+  "name": "opencode",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "typecheck": "tsc --noEmit",
+    "dev": "bun run ./src/index.ts"
+  },
+  "bin": {
+    "opencode": "./bin/opencode"
+  },
+  "exports": {
+    "./*": "./src/*.ts"
+  },
+  "devDependencies": {
+    "@ai-sdk/amazon-bedrock": "2.2.10",
+    "@ai-sdk/anthropic": "1.2.12",
+    "@tsconfig/bun": "1.0.7",
+    "@types/bun": "latest",
+    "@types/turndown": "5.0.5",
+    "@types/yargs": "17.0.33",
+    "typescript": "catalog:",
+    "zod-to-json-schema": "3.24.5"
+  },
+  "dependencies": {
+    "@clack/prompts": "0.11.0",
+    "@flystorage/file-storage": "1.1.0",
+    "@flystorage/local-fs": "1.1.0",
+    "@hono/zod-validator": "0.5.0",
+    "@openauthjs/openauth": "0.4.3",
+    "@standard-schema/spec": "1.0.0",
+    "ai": "catalog:",
+    "decimal.js": "10.5.0",
+    "diff": "8.0.2",
+    "env-paths": "3.0.0",
+    "hono": "4.7.10",
+    "hono-openapi": "0.4.8",
+    "isomorphic-git": "1.32.1",
+    "open": "10.1.2",
+    "remeda": "2.22.3",
+    "ts-lsp-client": "1.0.3",
+    "turndown": "7.2.0",
+    "vscode-jsonrpc": "8.2.1",
+    "vscode-languageclient": "8",
+    "xdg-basedir": "5.1.0",
+    "yargs": "18.0.0",
+    "zod": "catalog:",
+    "zod-openapi": "4.2.4",
+    "zod-validation-error": "3.5.2"
+  }
+}

packages/opencode/script/postinstall.mjs

@@ -0,0 +1,90 @@
+#!/usr/bin/env node
+
+import fs from "fs"
+import path from "path"
+import os from "os"
+import { fileURLToPath } from "url"
+import { createRequire } from "module"
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+const require = createRequire(import.meta.url)
+
+function detectPlatformAndArch() {
+  // Map platform names
+  let platform
+  switch (os.platform()) {
+    case "darwin":
+      platform = "darwin"
+      break
+    case "linux":
+      platform = "linux"
+      break
+    case "win32":
+      platform = "win32"
+      break
+    default:
+      platform = os.platform()
+      break
+  }
+
+  // Map architecture names
+  let arch
+  switch (os.arch()) {
+    case "x64":
+      arch = "x64"
+      break
+    case "arm64":
+      arch = "arm64"
+      break
+    case "arm":
+      arch = "arm"
+      break
+    default:
+      arch = os.arch()
+      break
+  }
+
+  return { platform, arch }
+}
+
+function findBinary() {
+  const { platform, arch } = detectPlatformAndArch()
+  const packageName = `opencode-${platform}-${arch}`
+  const binary = platform === "win32" ? "opencode.exe" : "opencode"
+
+  try {
+    // Use require.resolve to find the package
+    const packageJsonPath = require.resolve(`${packageName}/package.json`)
+    const packageDir = path.dirname(packageJsonPath)
+    const binaryPath = path.join(packageDir, "bin", binary)
+
+    if (!fs.existsSync(binaryPath)) {
+      throw new Error(`Binary not found at ${binaryPath}`)
+    }
+
+    return binaryPath
+  } catch (error) {
+    throw new Error(`Could not find package ${packageName}: ${error.message}`)
+  }
+}
+
+function main() {
+  try {
+    const binaryPath = findBinary()
+    const binScript = path.join(__dirname, "bin", "opencode")
+
+    // Remove existing bin script if it exists
+    if (fs.existsSync(binScript)) {
+      fs.unlinkSync(binScript)
+    }
+
+    // Create symlink to the actual binary
+    fs.symlinkSync(binaryPath, binScript)
+    console.log(`opencode binary symlinked: ${binScript} -> ${binaryPath}`)
+  } catch (error) {
+    console.error("Failed to create opencode binary symlink:", error.message)
+    process.exit(1)
+  }
+}
+
+main()

packages/opencode/script/publish.ts

@@ -0,0 +1,218 @@
+#!/usr/bin/env bun
+
+import { $ } from "bun"
+
+import pkg from "../package.json"
+
+const dry = process.argv.includes("--dry")
+const snapshot = process.argv.includes("--snapshot")
+
+const version = snapshot
+  ? `0.0.0-${new Date().toISOString().slice(0, 16).replace(/[-:T]/g, "")}`
+  : await $`git describe --tags --exact-match HEAD`
+      .text()
+      .then((x) => x.substring(1).trim())
+      .catch(() => {
+        console.error("tag not found")
+        process.exit(1)
+      })
+
+console.log(`publishing ${version}`)
+
+const GOARCH: Record<string, string> = {
+  arm64: "arm64",
+  x64: "amd64",
+}
+
+const targets = [
+  ["linux", "arm64"],
+  ["linux", "x64"],
+  ["darwin", "x64"],
+  ["darwin", "arm64"],
+  ["windows", "x64"],
+]
+
+await $`rm -rf dist`
+
+const optionalDependencies: Record<string, string> = {}
+const npmTag = snapshot ? "snapshot" : "latest"
+for (const [os, arch] of targets) {
+  console.log(`building ${os}-${arch}`)
+  const name = `${pkg.name}-${os}-${arch}`
+  await $`mkdir -p dist/${name}/bin`
+  await $`CGO_ENABLED=0 GOOS=${os} GOARCH=${GOARCH[arch]} go build -ldflags="-s -w -X main.Version=${version}" -o ../opencode/dist/${name}/bin/tui ../tui/cmd/opencode/main.go`.cwd(
+    "../tui",
+  )
+  await $`bun build --define OPENCODE_VERSION="'${version}'" --compile --minify --target=bun-${os}-${arch} --outfile=dist/${name}/bin/opencode ./src/index.ts ./dist/${name}/bin/tui`
+  await $`rm -rf ./dist/${name}/bin/tui`
+  await Bun.file(`dist/${name}/package.json`).write(
+    JSON.stringify(
+      {
+        name,
+        version,
+        os: [os === "windows" ? "win32" : os],
+        cpu: [arch],
+      },
+      null,
+      2,
+    ),
+  )
+  if (!dry) await $`cd dist/${name} && bun publish --access public --tag ${npmTag}`
+  optionalDependencies[name] = version
+}
+
+await $`mkdir -p ./dist/${pkg.name}`
+await $`cp -r ./bin ./dist/${pkg.name}/bin`
+await $`cp ./script/postinstall.mjs ./dist/${pkg.name}/postinstall.mjs`
+await Bun.file(`./dist/${pkg.name}/package.json`).write(
+  JSON.stringify(
+    {
+      name: pkg.name + "-ai",
+      bin: {
+        [pkg.name]: `./bin/${pkg.name}`,
+      },
+      scripts: {
+        postinstall: "node ./postinstall.mjs",
+      },
+      version,
+      optionalDependencies,
+    },
+    null,
+    2,
+  ),
+)
+if (!dry) await $`cd ./dist/${pkg.name} && bun publish --access public --tag ${npmTag}`
+
+if (!snapshot) {
+  // Github Release
+  for (const key of Object.keys(optionalDependencies)) {
+    await $`cd dist/${key}/bin && zip -r ../../${key}.zip *`
+  }
+
+  const previous = await fetch("https://api.github.com/repos/sst/opencode/releases/latest")
+    .then((res) => res.json())
+    .then((data) => data.tag_name)
+
+  const commits = await fetch(`https://api.github.com/repos/sst/opencode/compare/${previous}...HEAD`)
+    .then((res) => res.json())
+    .then((data) => data.commits || [])
+
+  const notes = commits
+    .map((commit: any) => `- ${commit.commit.message.split("\n")[0]}`)
+    .filter((x: string) => {
+      const lower = x.toLowerCase()
+      return (
+        !lower.includes("ignore:") &&
+        !lower.includes("ci:") &&
+        !lower.includes("wip:") &&
+        !lower.includes("docs:") &&
+        !lower.includes("doc:")
+      )
+    })
+    .join("\n")
+
+  if (!dry) await $`gh release create v${version} --title "v${version}" --notes ${notes} ./dist/*.zip`
+
+  // Calculate SHA values
+  const arm64Sha = await $`sha256sum ./dist/opencode-linux-arm64.zip | cut -d' ' -f1`.text().then((x) => x.trim())
+  const x64Sha = await $`sha256sum ./dist/opencode-linux-x64.zip | cut -d' ' -f1`.text().then((x) => x.trim())
+  const macX64Sha = await $`sha256sum ./dist/opencode-darwin-x64.zip | cut -d' ' -f1`.text().then((x) => x.trim())
+  const macArm64Sha = await $`sha256sum ./dist/opencode-darwin-arm64.zip | cut -d' ' -f1`.text().then((x) => x.trim())
+
+  // AUR package
+  const pkgbuild = [
+    "# Maintainer: dax",
+    "# Maintainer: adam",
+    "",
+    "pkgname='${pkg}'",
+    `pkgver=${version.split("-")[0]}`,
+    "options=('!debug' '!strip')",
+    "pkgrel=1",
+    "pkgdesc='The AI coding agent built for the terminal.'",
+    "url='https://github.com/sst/opencode'",
+    "arch=('aarch64' 'x86_64')",
+    "license=('MIT')",
+    "provides=('opencode')",
+    "conflicts=('opencode')",
+    "depends=('fzf' 'ripgrep')",
+    "",
+    `source_aarch64=("\${pkgname}_\${pkgver}_aarch64.zip::https://github.com/sst/opencode/releases/download/v${version}/opencode-linux-arm64.zip")`,
+    `sha256sums_aarch64=('${arm64Sha}')`,
+    "",
+    `source_x86_64=("\${pkgname}_\${pkgver}_x86_64.zip::https://github.com/sst/opencode/releases/download/v${version}/opencode-linux-x64.zip")`,
+    `sha256sums_x86_64=('${x64Sha}')`,
+    "",
+    "package() {",
+    '  install -Dm755 ./opencode "${pkgdir}/usr/bin/opencode"',
+    "}",
+    "",
+  ].join("\n")
+
+  for (const pkg of ["opencode", "opencode-bin"]) {
+    await $`rm -rf ./dist/aur-${pkg}`
+    await $`git clone ssh://aur@aur.archlinux.org/${pkg}.git ./dist/aur-${pkg}`
+    await Bun.file(`./dist/aur-${pkg}/PKGBUILD`).write(pkgbuild.replace("${pkg}", pkg))
+    await $`cd ./dist/aur-${pkg} && makepkg --printsrcinfo > .SRCINFO`
+    await $`cd ./dist/aur-${pkg} && git add PKGBUILD .SRCINFO`
+    await $`cd ./dist/aur-${pkg} && git commit -m "Update to v${version}"`
+    if (!dry) await $`cd ./dist/aur-${pkg} && git push`
+  }
+
+  // Homebrew formula
+  const homebrewFormula = [
+    "# typed: false",
+    "# frozen_string_literal: true",
+    "",
+    "# This file was generated by GoReleaser. DO NOT EDIT.",
+    "class Opencode < Formula",
+    `  desc "The AI coding agent built for the terminal."`,
+    `  homepage "https://github.com/sst/opencode"`,
+    `  version "${version.split("-")[0]}"`,
+    "",
+    "  on_macos do",
+    "    if Hardware::CPU.intel?",
+    `      url "https://github.com/sst/opencode/releases/download/v${version}/opencode-darwin-x64.zip"`,
+    `      sha256 "${macX64Sha}"`,
+    "",
+    "      def install",
+    '        bin.install "opencode"',
+    "      end",
+    "    end",
+    "    if Hardware::CPU.arm?",
+    `      url "https://github.com/sst/opencode/releases/download/v${version}/opencode-darwin-arm64.zip"`,
+    `      sha256 "${macArm64Sha}"`,
+    "",
+    "      def install",
+    '        bin.install "opencode"',
+    "      end",
+    "    end",
+    "  end",
+    "",
+    "  on_linux do",
+    "    if Hardware::CPU.intel? and Hardware::CPU.is_64_bit?",
+    `      url "https://github.com/sst/opencode/releases/download/v${version}/opencode-linux-x64.zip"`,
+    `      sha256 "${x64Sha}"`,
+    "      def install",
+    '        bin.install "opencode"',
+    "      end",
+    "    end",
+    "    if Hardware::CPU.arm? and Hardware::CPU.is_64_bit?",
+    `      url "https://github.com/sst/opencode/releases/download/v${version}/opencode-linux-arm64.zip"`,
+    `      sha256 "${arm64Sha}"`,
+    "      def install",
+    '        bin.install "opencode"',
+    "      end",
+    "    end",
+    "  end",
+    "end",
+    "",
+    "",
+  ].join("\n")
+
+  await $`rm -rf ./dist/homebrew-tap`
+  await $`git clone https://${process.env["GITHUB_TOKEN"]}@github.com/sst/homebrew-tap.git ./dist/homebrew-tap`
+  await Bun.file("./dist/homebrew-tap/opencode.rb").write(homebrewFormula)
+  await $`cd ./dist/homebrew-tap && git add opencode.rb`
+  await $`cd ./dist/homebrew-tap && git commit -m "Update to v${version}"`
+  if (!dry) await $`cd ./dist/homebrew-tap && git push`
+}

packages/opencode/script/schema.ts

@@ -0,0 +1,8 @@
+#!/usr/bin/env bun
+
+import "zod-openapi/extend"
+import { Config } from "../src/config/config"
+import { zodToJsonSchema } from "zod-to-json-schema"
+
+const result = zodToJsonSchema(Config.Info)
+await Bun.write("config.schema.json", JSON.stringify(result, null, 2))

packages/opencode/src/app/app.ts

@@ -0,0 +1,147 @@
+import "zod-openapi/extend"
+import { Log } from "../util/log"
+import { Context } from "../util/context"
+import { Filesystem } from "../util/filesystem"
+import { Global } from "../global"
+import path from "path"
+import os from "os"
+import { z } from "zod"
+
+export namespace App {
+  const log = Log.create({ service: "app" })
+
+  export const Info = z
+    .object({
+      user: z.string(),
+      hostname: z.string(),
+      git: z.boolean(),
+      path: z.object({
+        config: z.string(),
+        data: z.string(),
+        root: z.string(),
+        cwd: z.string(),
+        state: z.string(),
+      }),
+      time: z.object({
+        initialized: z.number().optional(),
+      }),
+    })
+    .openapi({
+      ref: "App",
+    })
+  export type Info = z.infer<typeof Info>
+
+  const ctx = Context.create<{
+    info: Info
+    services: Map<any, { state: any; shutdown?: (input: any) => Promise<void> }>
+  }>("app")
+
+  export const use = ctx.use
+
+  const APP_JSON = "app.json"
+
+  export type Input = {
+    cwd: string
+  }
+
+  export const provideExisting = ctx.provide
+  export async function provide<T>(input: Input, cb: (app: App.Info) => Promise<T>) {
+    log.info("creating", {
+      cwd: input.cwd,
+    })
+    const git = await Filesystem.findUp(".git", input.cwd).then(([x]) => (x ? path.dirname(x) : undefined))
+    log.info("git", { git })
+
+    const data = path.join(Global.Path.data, "project", git ? directory(git) : "global")
+    const stateFile = Bun.file(path.join(data, APP_JSON))
+    const state = (await stateFile.json().catch(() => ({}))) as {
+      initialized: number
+    }
+    await stateFile.write(JSON.stringify(state))
+
+    const services = new Map<
+      any,
+      {
+        state: any
+        shutdown?: (input: any) => Promise<void>
+      }
+    >()
+
+    const root = git ?? input.cwd
+
+    const info: Info = {
+      user: os.userInfo().username,
+      hostname: os.hostname(),
+      time: {
+        initialized: state.initialized,
+      },
+      git: git !== undefined,
+      path: {
+        config: Global.Path.config,
+        state: Global.Path.state,
+        data,
+        root,
+        cwd: input.cwd,
+      },
+    }
+    const app = {
+      services,
+      info,
+    }
+
+    return ctx.provide(app, async () => {
+      try {
+        const result = await cb(app.info)
+        return result
+      } finally {
+        for (const [key, entry] of app.services.entries()) {
+          if (!entry.shutdown) continue
+          log.info("shutdown", { name: key })
+          await entry.shutdown?.(await entry.state)
+        }
+      }
+    })
+  }
+
+  export function state<State>(
+    key: any,
+    init: (app: Info) => State,
+    shutdown?: (state: Awaited<State>) => Promise<void>,
+  ) {
+    return () => {
+      const app = ctx.use()
+      const services = app.services
+      if (!services.has(key)) {
+        log.info("registering service", { name: key })
+        services.set(key, {
+          state: init(app.info),
+          shutdown,
+        })
+      }
+      return services.get(key)?.state as State
+    }
+  }
+
+  export function info() {
+    return ctx.use().info
+  }
+
+  export async function initialize() {
+    const { info } = ctx.use()
+    info.time.initialized = Date.now()
+    await Bun.write(
+      path.join(info.path.data, APP_JSON),
+      JSON.stringify({
+        initialized: Date.now(),
+      }),
+    )
+  }
+
+  function directory(input: string): string {
+    return input
+      .split(path.sep)
+      .filter(Boolean)
+      .join("-")
+      .replace(/[^A-Za-z0-9_]/g, "-")
+  }
+}

packages/opencode/src/auth/anthropic.ts

@@ -0,0 +1,81 @@
+import { generatePKCE } from "@openauthjs/openauth/pkce"
+import { Auth } from "./index"
+
+export namespace AuthAnthropic {
+  const CLIENT_ID = "9d1c250a-e61b-44d9-88ed-5944d1962f5e"
+
+  export async function authorize() {
+    const pkce = await generatePKCE()
+    const url = new URL("https://claude.ai/oauth/authorize", import.meta.url)
+    url.searchParams.set("code", "true")
+    url.searchParams.set("client_id", CLIENT_ID)
+    url.searchParams.set("response_type", "code")
+    url.searchParams.set("redirect_uri", "https://console.anthropic.com/oauth/code/callback")
+    url.searchParams.set("scope", "org:create_api_key user:profile user:inference")
+    url.searchParams.set("code_challenge", pkce.challenge)
+    url.searchParams.set("code_challenge_method", "S256")
+    url.searchParams.set("state", pkce.verifier)
+    return {
+      url: url.toString(),
+      verifier: pkce.verifier,
+    }
+  }
+
+  export async function exchange(code: string, verifier: string) {
+    const splits = code.split("#")
+    const result = await fetch("https://console.anthropic.com/v1/oauth/token", {
+      method: "POST",
+      headers: {
+        "Content-Type": "application/json",
+      },
+      body: JSON.stringify({
+        code: splits[0],
+        state: splits[1],
+        grant_type: "authorization_code",
+        client_id: CLIENT_ID,
+        redirect_uri: "https://console.anthropic.com/oauth/code/callback",
+        code_verifier: verifier,
+      }),
+    })
+    if (!result.ok) throw new ExchangeFailed()
+    const json = await result.json()
+    await Auth.set("anthropic", {
+      type: "oauth",
+      refresh: json.refresh_token as string,
+      access: json.access_token as string,
+      expires: Date.now() + json.expires_in * 1000,
+    })
+  }
+
+  export async function access() {
+    const info = await Auth.get("anthropic")
+    if (!info || info.type !== "oauth") return
+    if (info.access && info.expires > Date.now()) return info.access
+    const response = await fetch("https://console.anthropic.com/v1/oauth/token", {
+      method: "POST",
+      headers: {
+        "Content-Type": "application/json",
+      },
+      body: JSON.stringify({
+        grant_type: "refresh_token",
+        refresh_token: info.refresh,
+        client_id: CLIENT_ID,
+      }),
+    })
+    if (!response.ok) return
+    const json = await response.json()
+    await Auth.set("anthropic", {
+      type: "oauth",
+      refresh: json.refresh_token as string,
+      access: json.access_token as string,
+      expires: Date.now() + json.expires_in * 1000,
+    })
+    return json.access_token as string
+  }
+
+  export class ExchangeFailed extends Error {
+    constructor() {
+      super("Exchange failed")
+    }
+  }
+}

packages/opencode/src/auth/copilot.ts

@@ -0,0 +1,18 @@
+import { Global } from "../global"
+import { lazy } from "../util/lazy"
+import path from "path"
+
+export const AuthCopilot = lazy(async () => {
+  const file = Bun.file(path.join(Global.Path.state, "plugin", "copilot.ts"))
+  const response = fetch("https://raw.githubusercontent.com/sst/opencode-github-copilot/refs/heads/main/auth.ts")
+    .then((x) => Bun.write(file, x))
+    .catch(() => {})
+
+  if (!file.exists()) {
+    const worked = await response
+    if (!worked) return
+  }
+  const result = await import(file.name!).catch(() => {})
+  if (!result) return
+  return result.AuthCopilot
+})

packages/opencode/src/auth/github-copilot.ts

@@ -0,0 +1,147 @@
+import { z } from "zod"
+import { Auth } from "./index"
+import { NamedError } from "../util/error"
+
+export namespace AuthGithubCopilot {
+  const CLIENT_ID = "Iv1.b507a08c87ecfe98"
+  const DEVICE_CODE_URL = "https://github.com/login/device/code"
+  const ACCESS_TOKEN_URL = "https://github.com/login/oauth/access_token"
+  const COPILOT_API_KEY_URL = "https://api.github.com/copilot_internal/v2/token"
+
+  interface DeviceCodeResponse {
+    device_code: string
+    user_code: string
+    verification_uri: string
+    expires_in: number
+    interval: number
+  }
+
+  interface AccessTokenResponse {
+    access_token?: string
+    error?: string
+    error_description?: string
+  }
+
+  interface CopilotTokenResponse {
+    token: string
+    expires_at: number
+    refresh_in: number
+    endpoints: {
+      api: string
+    }
+  }
+
+  export async function authorize() {
+    const deviceResponse = await fetch(DEVICE_CODE_URL, {
+      method: "POST",
+      headers: {
+        Accept: "application/json",
+        "Content-Type": "application/json",
+        "User-Agent": "GitHubCopilotChat/0.26.7",
+      },
+      body: JSON.stringify({
+        client_id: CLIENT_ID,
+        scope: "read:user",
+      }),
+    })
+    const deviceData: DeviceCodeResponse = await deviceResponse.json()
+    return {
+      device: deviceData.device_code,
+      user: deviceData.user_code,
+      verification: deviceData.verification_uri,
+      interval: deviceData.interval || 5,
+      expiry: deviceData.expires_in,
+    }
+  }
+
+  export async function poll(device_code: string) {
+    const response = await fetch(ACCESS_TOKEN_URL, {
+      method: "POST",
+      headers: {
+        Accept: "application/json",
+        "Content-Type": "application/json",
+        "User-Agent": "GitHubCopilotChat/0.26.7",
+      },
+      body: JSON.stringify({
+        client_id: CLIENT_ID,
+        device_code,
+        grant_type: "urn:ietf:params:oauth:grant-type:device_code",
+      }),
+    })
+
+    if (!response.ok) return "failed"
+
+    const data: AccessTokenResponse = await response.json()
+
+    if (data.access_token) {
+      // Store the GitHub OAuth token
+      await Auth.set("github-copilot", {
+        type: "oauth",
+        refresh: data.access_token,
+        access: "",
+        expires: 0,
+      })
+      return "complete"
+    }
+
+    if (data.error === "authorization_pending") return "pending"
+
+    if (data.error) return "failed"
+
+    return "pending"
+  }
+
+  export async function access() {
+    const info = await Auth.get("github-copilot")
+    if (!info || info.type !== "oauth") return
+    if (info.access && info.expires > Date.now()) return info.access
+
+    // Get new Copilot API token
+    const response = await fetch(COPILOT_API_KEY_URL, {
+      headers: {
+        Accept: "application/json",
+        Authorization: `Bearer ${info.refresh}`,
+        "User-Agent": "GitHubCopilotChat/0.26.7",
+        "Editor-Version": "vscode/1.99.3",
+        "Editor-Plugin-Version": "copilot-chat/0.26.7",
+      },
+    })
+
+    if (!response.ok) return
+
+    const tokenData: CopilotTokenResponse = await response.json()
+
+    // Store the Copilot API token
+    await Auth.set("github-copilot", {
+      type: "oauth",
+      refresh: info.refresh,
+      access: tokenData.token,
+      expires: tokenData.expires_at * 1000,
+    })
+
+    return tokenData.token
+  }
+
+  export const DeviceCodeError = NamedError.create("DeviceCodeError", z.object({}))
+
+  export const TokenExchangeError = NamedError.create(
+    "TokenExchangeError",
+    z.object({
+      message: z.string(),
+    }),
+  )
+
+  export const AuthenticationError = NamedError.create(
+    "AuthenticationError",
+    z.object({
+      message: z.string(),
+    }),
+  )
+
+  export const CopilotTokenError = NamedError.create(
+    "CopilotTokenError",
+    z.object({
+      message: z.string(),
+    }),
+  )
+}

packages/opencode/src/auth/index.ts

@@ -0,0 +1,51 @@
+import path from "path"
+import { Global } from "../global"
+import fs from "fs/promises"
+import { z } from "zod"
+
+export namespace Auth {
+  export const Oauth = z.object({
+    type: z.literal("oauth"),
+    refresh: z.string(),
+    access: z.string(),
+    expires: z.number(),
+  })
+
+  export const Api = z.object({
+    type: z.literal("api"),
+    key: z.string(),
+  })
+
+  export const Info = z.discriminatedUnion("type", [Oauth, Api])
+  export type Info = z.infer<typeof Info>
+
+  const filepath = path.join(Global.Path.data, "auth.json")
+
+  export async function get(providerID: string) {
+    const file = Bun.file(filepath)
+    return file
+      .json()
+      .catch(() => ({}))
+      .then((x) => x[providerID] as Info | undefined)
+  }
+
+  export async function all(): Promise<Record<string, Info>> {
+    const file = Bun.file(filepath)
+    return file.json().catch(() => ({}))
+  }
+
+  export async function set(key: string, info: Info) {
+    const file = Bun.file(filepath)
+    const data = await all()
+    await Bun.write(file, JSON.stringify({ ...data, [key]: info }, null, 2))
+    await fs.chmod(file.name!, 0o600)
+  }
+
+  export async function remove(key: string) {
+    const file = Bun.file(filepath)
+    const data = await all()
+    delete data[key]
+    await Bun.write(file, JSON.stringify(data, null, 2))
+    await fs.chmod(file.name!, 0o600)
+  }
+}

packages/opencode/src/bun/index.ts

@@ -0,0 +1,81 @@
+import { z } from "zod"
+import { Global } from "../global"
+import { Log } from "../util/log"
+import path from "path"
+import { NamedError } from "../util/error"
+import { readableStreamToText } from "bun"
+
+export namespace BunProc {
+  const log = Log.create({ service: "bun" })
+
+  export async function run(cmd: string[], options?: Bun.SpawnOptions.OptionsObject<any, any, any>) {
+    log.info("running", {
+      cmd: [which(), ...cmd],
+      ...options,
+    })
+    const result = Bun.spawn([which(), ...cmd], {
+      ...options,
+      stdout: "pipe",
+      stderr: "pipe",
+      env: {
+        ...process.env,
+        ...options?.env,
+        BUN_BE_BUN: "1",
+      },
+    })
+    const code = await result.exited
+    const stdout = result.stdout
+      ? typeof result.stdout === "number"
+        ? result.stdout
+        : await readableStreamToText(result.stdout)
+      : undefined
+    const stderr = result.stderr
+      ? typeof result.stderr === "number"
+        ? result.stderr
+        : await readableStreamToText(result.stderr)
+      : undefined
+    log.info("done", {
+      code,
+      stdout,
+      stderr,
+    })
+    if (code !== 0) {
+      throw new Error(`Command failed with exit code ${result.exitCode}`)
+    }
+    return result
+  }
+
+  export function which() {
+    return process.execPath
+  }
+
+  export const InstallFailedError = NamedError.create(
+    "BunInstallFailedError",
+    z.object({
+      pkg: z.string(),
+      version: z.string(),
+    }),
+  )
+
+  export async function install(pkg: string, version = "latest") {
+    const mod = path.join(Global.Path.cache, "node_modules", pkg)
+    const pkgjson = Bun.file(path.join(Global.Path.cache, "package.json"))
+    const parsed = await pkgjson.json().catch(() => ({
+      dependencies: {},
+    }))
+    if (parsed.dependencies[pkg] === version) return mod
+    parsed.dependencies[pkg] = version
+    await Bun.write(pkgjson, JSON.stringify(parsed, null, 2))
+    await BunProc.run(["install", "--cwd", Global.Path.cache, "--registry=https://registry.npmjs.org"], {
+      cwd: Global.Path.cache,
+    }).catch((e) => {
+      throw new InstallFailedError(
+        { pkg, version },
+        {
+          cause: e,
+        },
+      )
+    })
+    return mod
+  }
+}

packages/opencode/src/bus/index.ts

@@ -0,0 +1,109 @@
+import { z, type ZodType } from "zod"
+import { App } from "../app/app"
+import { Log } from "../util/log"
+
+export namespace Bus {
+  const log = Log.create({ service: "bus" })
+  type Subscription = (event: any) => void
+
+  const state = App.state("bus", () => {
+    const subscriptions = new Map<any, Subscription[]>()
+
+    return {
+      subscriptions,
+    }
+  })
+
+  export type EventDefinition = ReturnType<typeof event>
+
+  const registry = new Map<string, EventDefinition>()
+
+  export function event<Type extends string, Properties extends ZodType>(type: Type, properties: Properties) {
+    const result = {
+      type,
+      properties,
+    }
+    registry.set(type, result)
+    return result
+  }
+
+  export function payloads() {
+    return z.discriminatedUnion(
+      "type",
+      registry
+        .entries()
+        .map(([type, def]) =>
+          z
+            .object({
+              type: z.literal(type),
+              properties: def.properties,
+            })
+            .openapi({
+              ref: "Event" + "." + def.type,
+            }),
+        )
+        .toArray() as any,
+    )
+  }
+
+  export async function publish<Definition extends EventDefinition>(
+    def: Definition,
+    properties: z.output<Definition["properties"]>,
+  ) {
+    const payload = {
+      type: def.type,
+      properties,
+    }
+    log.info("publishing", {
+      type: def.type,
+    })
+    const pending = []
+    for (const key of [def.type, "*"]) {
+      const match = state().subscriptions.get(key)
+      for (const sub of match ?? []) {
+        pending.push(sub(payload))
+      }
+    }
+    return Promise.all(pending)
+  }
+
+  export function subscribe<Definition extends EventDefinition>(
+    def: Definition,
+    callback: (event: { type: Definition["type"]; properties: z.infer<Definition["properties"]> }) => void,
+  ) {
+    return raw(def.type, callback)
+  }
+
+  export function once<Definition extends EventDefinition>(
+    def: Definition,
+    callback: (event: {
+      type: Definition["type"]
+      properties: z.infer<Definition["properties"]>
+    }) => "done" | undefined,
+  ) {
+    const unsub = subscribe(def, (event) => {
+      if (callback(event)) unsub()
+    })
+  }
+
+  export function subscribeAll(callback: (event: any) => void) {
+    return raw("*", callback)
+  }
+
+  function raw(type: string, callback: (event: any) => void) {
+    log.info("subscribing", { type })
+    const subscriptions = state().subscriptions
+    let match = subscriptions.get(type) ?? []
+    match.push(callback)
+    subscriptions.set(type, match)
+
+    return () => {
+      log.info("unsubscribing", { type })
+      const match = subscriptions.get(type)
+      if (!match) return
+      const index = match.indexOf(callback)
+      if (index === -1) return
+      match.splice(index, 1)
+    }
+  }
+}

packages/opencode/src/cli/bootstrap.ts

@@ -0,0 +1,18 @@
+import { App } from "../app/app"
+import { ConfigHooks } from "../config/hooks"
+import { FileWatcher } from "../file/watch"
+import { Format } from "../format"
+import { LSP } from "../lsp"
+import { Share } from "../share/share"
+
+export async function bootstrap<T>(input: App.Input, cb: (app: App.Info) => Promise<T>) {
+  return App.provide(input, async (app) => {
+    Share.init()
+    Format.init()
+    ConfigHooks.init()
+    LSP.init()
+    FileWatcher.init()
+
+    return cb(app)
+  })
+}

packages/opencode/src/cli/cmd/auth.ts

@@ -0,0 +1,248 @@
+import { AuthAnthropic } from "../../auth/anthropic"
+import { AuthCopilot } from "../../auth/copilot"
+import { Auth } from "../../auth"
+import { cmd } from "./cmd"
+import * as prompts from "@clack/prompts"
+import open from "open"
+import { UI } from "../ui"
+import { ModelsDev } from "../../provider/models"
+import { map, pipe, sortBy, values } from "remeda"
+import path from "path"
+import os from "os"
+import { Global } from "../../global"
+
+export const AuthCommand = cmd({
+  command: "auth",
+  describe: "manage credentials",
+  builder: (yargs) =>
+    yargs.command(AuthLoginCommand).command(AuthLogoutCommand).command(AuthListCommand).demandCommand(),
+  async handler() {},
+})
+
+export const AuthListCommand = cmd({
+  command: "list",
+  aliases: ["ls"],
+  describe: "list providers",
+  async handler() {
+    UI.empty()
+    const authPath = path.join(Global.Path.data, "auth.json")
+    const homedir = os.homedir()
+    const displayPath = authPath.startsWith(homedir) ? authPath.replace(homedir, "~") : authPath
+    prompts.intro(`Credentials ${UI.Style.TEXT_DIM}${displayPath}`)
+    const results = await Auth.all().then((x) => Object.entries(x))
+    const database = await ModelsDev.get()
+
+    for (const [providerID, result] of results) {
+      const name = database[providerID]?.name || providerID
+      prompts.log.info(`${name} ${UI.Style.TEXT_DIM}${result.type}`)
+    }
+
+    prompts.outro(`${results.length} credentials`)
+
+    // Environment variables section
+    const activeEnvVars: Array<{ provider: string; envVar: string }> = []
+
+    for (const [providerID, provider] of Object.entries(database)) {
+      for (const envVar of provider.env) {
+        if (process.env[envVar]) {
+          activeEnvVars.push({
+            provider: provider.name || providerID,
+            envVar,
+          })
+        }
+      }
+    }
+
+    if (activeEnvVars.length > 0) {
+      UI.empty()
+      prompts.intro("Environment")
+
+      for (const { provider, envVar } of activeEnvVars) {
+        prompts.log.info(`${provider} ${UI.Style.TEXT_DIM}${envVar}`)
+      }
+
+      prompts.outro(`${activeEnvVars.length} environment variables`)
+    }
+  },
+})
+
+export const AuthLoginCommand = cmd({
+  command: "login",
+  describe: "log in to a provider",
+  async handler() {
+    UI.empty()
+    prompts.intro("Add credential")
+    const providers = await ModelsDev.get()
+    const priority: Record<string, number> = {
+      anthropic: 0,
+      "github-copilot": 1,
+      openai: 2,
+      google: 3,
+    }
+    let provider = await prompts.select({
+      message: "Select provider",
+      maxItems: 8,
+      options: [
+        ...pipe(
+          providers,
+          values(),
+          sortBy(
+            (x) => priority[x.id] ?? 99,
+            (x) => x.name ?? x.id,
+          ),
+          map((x) => ({
+            label: x.name,
+            value: x.id,
+            hint: priority[x.id] === 0 ? "recommended" : undefined,
+          })),
+        ),
+        {
+          value: "other",
+          label: "Other",
+        },
+      ],
+    })
+
+    if (prompts.isCancel(provider)) throw new UI.CancelledError()
+
+    if (provider === "other") {
+      provider = await prompts.text({
+        message: "Enter provider id",
+        validate: (x) => (x.match(/^[a-z-]+$/) ? undefined : "a-z and hyphens only"),
+      })
+      if (prompts.isCancel(provider)) throw new UI.CancelledError()
+      provider = provider.replace(/^@ai-sdk\//, "")
+      if (prompts.isCancel(provider)) throw new UI.CancelledError()
+      prompts.log.warn(
+        `This only stores a credential for ${provider} - you will need configure it in opencode.json, check the docs for examples.`,
+      )
+    }
+
+    if (provider === "amazon-bedrock") {
+      prompts.log.info(
+        "Amazon bedrock can be configured with standard AWS environment variables like AWS_PROFILE or AWS_ACCESS_KEY_ID",
+      )
+      prompts.outro("Done")
+      return
+    }
+
+    if (provider === "anthropic") {
+      const method = await prompts.select({
+        message: "Login method",
+        options: [
+          {
+            label: "Claude Pro/Max",
+            value: "oauth",
+          },
+          {
+            label: "API Key",
+            value: "api",
+          },
+        ],
+      })
+      if (prompts.isCancel(method)) throw new UI.CancelledError()
+
+      if (method === "oauth") {
+        // some weird bug where program exits without this
+        await new Promise((resolve) => setTimeout(resolve, 10))
+        const { url, verifier } = await AuthAnthropic.authorize()
+        prompts.note("Trying to open browser...")
+        try {
+          await open(url)
+        } catch (e) {
+          prompts.log.error(
+            "Failed to open browser perhaps you are running without a display or X server, please open the following URL in your browser:",
+          )
+        }
+        prompts.log.info(url)
+
+        const code = await prompts.text({
+          message: "Paste the authorization code here: ",
+          validate: (x) => (x.length > 0 ? undefined : "Required"),
+        })
+        if (prompts.isCancel(code)) throw new UI.CancelledError()
+
+        await AuthAnthropic.exchange(code, verifier)
+          .then(() => {
+            prompts.log.success("Login successful")
+          })
+          .catch(() => {
+            prompts.log.error("Invalid code")
+          })
+        prompts.outro("Done")
+        return
+      }
+    }
+
+    const copilot = await AuthCopilot()
+    if (provider === "github-copilot" && copilot) {
+      await new Promise((resolve) => setTimeout(resolve, 10))
+      const deviceInfo = await copilot.authorize()
+
+      prompts.note(`Please visit: ${deviceInfo.verification}\nEnter code: ${deviceInfo.user}`)
+
+      const spinner = prompts.spinner()
+      spinner.start("Waiting for authorization...")
+
+      while (true) {
+        await new Promise((resolve) => setTimeout(resolve, deviceInfo.interval * 1000))
+        const response = await copilot.poll(deviceInfo.device)
+        if (response.status === "pending") continue
+        if (response.status === "success") {
+          await Auth.set("github-copilot", {
+            type: "oauth",
+            refresh: response.refresh,
+            access: response.access,
+            expires: response.expires,
+          })
+          spinner.stop("Login successful")
+          break
+        }
+        if (response.status === "failed") {
+          spinner.stop("Failed to authorize", 1)
+          break
+        }
+      }
+
+      prompts.outro("Done")
+      return
+    }
+
+    const key = await prompts.password({
+      message: "Enter your API key",
+      validate: (x) => (x.length > 0 ? undefined : "Required"),
+    })
+    if (prompts.isCancel(key)) throw new UI.CancelledError()
+    await Auth.set(provider, {
+      type: "api",
+      key,
+    })
+
+    prompts.outro("Done")
+  },
+})
+
+export const AuthLogoutCommand = cmd({
+  command: "logout",
+  describe: "log out from a configured provider",
+  async handler() {
+    UI.empty()
+    const credentials = await Auth.all().then((x) => Object.entries(x))
+    prompts.intro("Remove credential")
+    if (credentials.length === 0) {
+      prompts.log.error("No credentials found")
+      return
+    }
+    const database = await ModelsDev.get()
+    const providerID = await prompts.select({
+      message: "Select provider",
+      options: credentials.map(([key, value]) => ({
+        label: (database[key]?.name || key) + UI.Style.TEXT_DIM + " (" + value.type + ")",
+        value: key,
+      })),
+    })
+    if (prompts.isCancel(providerID)) throw new UI.CancelledError()
+    await Auth.remove(providerID)
+    prompts.outro("Logout successful")
+  },
+})

packages/opencode/src/cli/cmd/cmd.ts

@@ -0,0 +1,5 @@
+import type { CommandModule } from "yargs"
+
+export function cmd<T, U>(input: CommandModule<T, U>) {
+  return input
+}

packages/opencode/src/cli/cmd/debug/file.ts

@@ -0,0 +1,36 @@
+import { File } from "../../../file"
+import { bootstrap } from "../../bootstrap"
+import { cmd } from "../cmd"
+
+const FileReadCommand = cmd({
+  command: "read <path>",
+  builder: (yargs) =>
+    yargs.positional("path", {
+      type: "string",
+      demandOption: true,
+      description: "File path to read",
+    }),
+  async handler(args) {
+    await bootstrap({ cwd: process.cwd() }, async () => {
+      const content = await File.read(args.path)
+      console.log(content)
+    })
+  },
+})
+
+const FileStatusCommand = cmd({
+  command: "status",
+  builder: (yargs) => yargs,
+  async handler() {
+    await bootstrap({ cwd: process.cwd() }, async () => {
+      const status = await File.status()
+      console.log(JSON.stringify(status, null, 2))
+    })
+  },
+})
+
+export const FileCommand = cmd({
+  command: "file",
+  builder: (yargs) => yargs.command(FileReadCommand).command(FileStatusCommand).demandCommand(),
+  async handler() {},
+})

packages/opencode/src/cli/cmd/debug/index.ts

@@ -0,0 +1,26 @@
+import { bootstrap } from "../../bootstrap"
+import { cmd } from "../cmd"
+import { FileCommand } from "./file"
+import { LSPCommand } from "./lsp"
+import { RipgrepCommand } from "./ripgrep"
+import { SnapshotCommand } from "./snapshot"
+
+export const DebugCommand = cmd({
+  command: "debug",
+  builder: (yargs) =>
+    yargs
+      .command(LSPCommand)
+      .command(RipgrepCommand)
+      .command(FileCommand)
+      .command(SnapshotCommand)
+      .command({
+        command: "wait",
+        async handler() {
+          await bootstrap({ cwd: process.cwd() }, async () => {
+            await new Promise((resolve) => setTimeout(resolve, 1_000 * 60 * 60 * 24))
+          })
+        },
+      })
+      .demandCommand(),
+  async handler() {},
+})

packages/opencode/src/cli/cmd/debug/lsp.ts

@@ -0,0 +1,34 @@
+import { LSP } from "../../../lsp"
+import { bootstrap } from "../../bootstrap"
+import { cmd } from "../cmd"
+import { Log } from "../../../util/log"
+
+export const LSPCommand = cmd({
+  command: "lsp",
+  builder: (yargs) => yargs.command(DiagnosticsCommand).command(SymbolsCommand).demandCommand(),
+  async handler() {},
+})
+
+const DiagnosticsCommand = cmd({
+  command: "diagnostics <file>",
+  builder: (yargs) => yargs.positional("file", { type: "string", demandOption: true }),
+  async handler(args) {
+    await bootstrap({ cwd: process.cwd() }, async () => {
+      await LSP.touchFile(args.file, true)
+      console.log(await LSP.diagnostics())
+    })
+  },
+})
+
+export const SymbolsCommand = cmd({
+  command: "symbols <query>",
+  builder: (yargs) => yargs.positional("query", { type: "string", demandOption: true }),
+  async handler(args) {
+    await bootstrap({ cwd: process.cwd() }, async () => {
+      await LSP.touchFile("./src/index.ts", true)
+      using _ = Log.Default.time("symbols")
+      const results = await LSP.workspaceSymbol(args.query)
+      console.log(JSON.stringify(results, null, 2))
+    })
+  },
+})

packages/opencode/src/cli/cmd/debug/ripgrep.ts

@@ -0,0 +1,82 @@
+import { App } from "../../../app/app"
+import { Ripgrep } from "../../../file/ripgrep"
+import { bootstrap } from "../../bootstrap"
+import { cmd } from "../cmd"
+
+export const RipgrepCommand = cmd({
+  command: "rg",
+  builder: (yargs) => yargs.command(TreeCommand).command(FilesCommand).command(SearchCommand).demandCommand(),
+  async handler() {},
+})
+
+const TreeCommand = cmd({
+  command: "tree",
+  builder: (yargs) =>
+    yargs.option("limit", {
+      type: "number",
+    }),
+  async handler(args) {
+    await bootstrap({ cwd: process.cwd() }, async () => {
+      const app = App.info()
+      console.log(await Ripgrep.tree({ cwd: app.path.cwd, limit: args.limit }))
+    })
+  },
+})
+
+const FilesCommand = cmd({
+  command: "files",
+  builder: (yargs) =>
+    yargs
+      .option("query", {
+        type: "string",
+        description: "Filter files by query",
+      })
+      .option("glob", {
+        type: "string",
+        description: "Glob pattern to match files",
+      })
+      .option("limit", {
+        type: "number",
+        description: "Limit number of results",
+      }),
+  async handler(args) {
+    await bootstrap({ cwd: process.cwd() }, async () => {
+      const app = App.info()
+      const files = await Ripgrep.files({
+        cwd: app.path.cwd,
+        query: args.query,
+        glob: args.glob,
+        limit: args.limit,
+      })
+      console.log(files.join("\n"))
+    })
+  },
+})
+
+const SearchCommand = cmd({
+  command: "search <pattern>",
+  builder: (yargs) =>
+    yargs
+      .positional("pattern", {
+        type: "string",
+        demandOption: true,
+        description: "Search pattern",
+      })
+      .option("glob", {
+        type: "array",
+        description: "File glob patterns",
+      })
+      .option("limit", {
+        type: "number",
+        description: "Limit number of results",
+      }),
+  async handler(args) {
+    const results = await Ripgrep.search({
+      cwd: process.cwd(),
+      pattern: args.pattern,
+      glob: args.glob as string[] | undefined,
+      limit: args.limit,
+    })
+    console.log(JSON.stringify(results, null, 2))
+  },
+})

packages/opencode/src/cli/cmd/debug/snapshot.ts

@@ -0,0 +1,35 @@
+import { Snapshot } from "../../../snapshot"
+import { bootstrap } from "../../bootstrap"
+import { cmd } from "../cmd"
+
+export const SnapshotCommand = cmd({
+  command: "snapshot",
+  builder: (yargs) => yargs.command(SnapshotCreateCommand).command(SnapshotRestoreCommand).demandCommand(),
+  async handler() {},
+})
+
+export const SnapshotCreateCommand = cmd({
+  command: "create",
+  async handler() {
+    await bootstrap({ cwd: process.cwd() }, async () => {
+      const result = await Snapshot.create("test")
+      console.log(result)
+    })
+  },
+})
+
+export const SnapshotRestoreCommand = cmd({
+  command: "restore <commit>",
+  builder: (yargs) =>
+    yargs.positional("commit", {
+      type: "string",
+      description: "commit",
+      demandOption: true,
+    }),
+  async handler(args) {
+    await bootstrap({ cwd: process.cwd() }, async () => {
+      await Snapshot.restore("test", args.commit)
+      console.log("restored")
+    })
+  },
+})

packages/opencode/src/cli/cmd/generate.ts

@@ -0,0 +1,15 @@
+import { Server } from "../../server/server"
+import fs from "fs/promises"
+import path from "path"
+import type { CommandModule } from "yargs"
+
+export const GenerateCommand = {
+  command: "generate",
+  handler: async () => {
+    const specs = await Server.openapi()
+    const dir = "gen"
+    await fs.rmdir(dir, { recursive: true }).catch(() => {})
+    await fs.mkdir(dir, { recursive: true })
+    await Bun.write(path.join(dir, "openapi.json"), JSON.stringify(specs, null, 2))
+  },
+} satisfies CommandModule

packages/opencode/src/cli/cmd/models.ts

@@ -0,0 +1,19 @@
+import { App } from "../../app/app"
+import { Provider } from "../../provider/provider"
+import { cmd } from "./cmd"
+
+export const ModelsCommand = cmd({
+  command: "models",
+  describe: "list all available models",
+  handler: async () => {
+    await App.provide({ cwd: process.cwd() }, async () => {
+      const providers = await Provider.list()
+
+      for (const [providerID, provider] of Object.entries(providers)) {
+        for (const modelID of Object.keys(provider.info.models)) {
+          console.log(`${providerID}/${modelID}`)
+        }
+      }
+    })
+  },
+})

packages/opencode/src/cli/cmd/run.ts

@@ -0,0 +1,147 @@
+import type { Argv } from "yargs"
+import { Bus } from "../../bus"
+import { Provider } from "../../provider/provider"
+import { Session } from "../../session"
+import { UI } from "../ui"
+import { cmd } from "./cmd"
+import { Flag } from "../../flag/flag"
+import { Config } from "../../config/config"
+import { bootstrap } from "../bootstrap"
+import { MessageV2 } from "../../session/message-v2"
+
+const TOOL: Record<string, [string, string]> = {
+  todowrite: ["Todo", UI.Style.TEXT_WARNING_BOLD],
+  todoread: ["Todo", UI.Style.TEXT_WARNING_BOLD],
+  bash: ["Bash", UI.Style.TEXT_DANGER_BOLD],
+  edit: ["Edit", UI.Style.TEXT_SUCCESS_BOLD],
+  glob: ["Glob", UI.Style.TEXT_INFO_BOLD],
+  grep: ["Grep", UI.Style.TEXT_INFO_BOLD],
+  list: ["List", UI.Style.TEXT_INFO_BOLD],
+  read: ["Read", UI.Style.TEXT_HIGHLIGHT_BOLD],
+  write: ["Write", UI.Style.TEXT_SUCCESS_BOLD],
+  websearch: ["Search", UI.Style.TEXT_DIM_BOLD],
+}
+
+export const RunCommand = cmd({
+  command: "run [message..]",
+  describe: "run opencode with a message",
+  builder: (yargs: Argv) => {
+    return yargs
+      .positional("message", {
+        describe: "message to send",
+        type: "string",
+        array: true,
+        default: [],
+      })
+      .option("continue", {
+        alias: ["c"],
+        describe: "continue the last session",
+        type: "boolean",
+      })
+      .option("session", {
+        alias: ["s"],
+        describe: "session id to continue",
+        type: "string",
+      })
+      .option("share", {
+        type: "boolean",
+        describe: "share the session",
+      })
+      .option("model", {
+        type: "string",
+        alias: ["m"],
+        describe: "model to use in the format of provider/model",
+      })
+  },
+  handler: async (args) => {
+    let message = args.message.join(" ")
+
+    if (!process.stdin.isTTY) message += "\n" + (await Bun.stdin.text())
+
+    await bootstrap({ cwd: process.cwd() }, async () => {
+      const session = await (async () => {
+        if (args.continue) {
+          const first = await Session.list().next()
+          if (first.done) return
+          return first.value
+        }
+
+        if (args.session) return Session.get(args.session)
+
+        return Session.create()
+      })()
+
+      if (!session) {
+        UI.error("Session not found")
+        return
+      }
+
+      const isPiped = !process.stdout.isTTY
+
+      UI.empty()
+      UI.println(UI.logo())
+      UI.empty()
+      const displayMessage = message.length > 300 ? message.slice(0, 300) + "..." : message
+      UI.println(UI.Style.TEXT_NORMAL_BOLD + "> ", displayMessage)
+      UI.empty()
+
+      const cfg = await Config.get()
+      if (cfg.autoshare || Flag.OPENCODE_AUTO_SHARE || args.share) {
+        await Session.share(session.id)
+        UI.println(UI.Style.TEXT_INFO_BOLD + "~  https://opencode.ai/s/" + session.id.slice(-8))
+      }
+      UI.empty()
+
+      const { providerID, modelID } = args.model ? Provider.parseModel(args.model) : await Provider.defaultModel()
+      UI.println(UI.Style.TEXT_NORMAL_BOLD + "@ ", UI.Style.TEXT_NORMAL + `${providerID}/${modelID}`)
+      UI.empty()
+
+      function printEvent(color: string, type: string, title: string) {
+        UI.println(
+          color + `|`,
+          UI.Style.TEXT_NORMAL + UI.Style.TEXT_DIM + ` ${type.padEnd(7, " ")}`,
+          "",
+          UI.Style.TEXT_NORMAL + title,
+        )
+      }
+
+      Bus.subscribe(MessageV2.Event.PartUpdated, async (evt) => {
+        if (evt.properties.sessionID !== session.id) return
+        const part = evt.properties.part
+
+        if (part.type === "tool" && part.state.status === "completed") {
+          const [tool, color] = TOOL[part.tool] ?? [part.tool, UI.Style.TEXT_INFO_BOLD]
+          printEvent(color, tool, part.state.title || "Unknown")
+        }
+
+        if (part.type === "text") {
+          if (part.text.includes("\n")) {
+            UI.empty()
+            UI.println(part.text)
+            UI.empty()
+            return
+          }
+          printEvent(UI.Style.TEXT_NORMAL_BOLD, "Text", part.text)
+        }
+      })
+
+      const result = await Session.chat({
+        sessionID: session.id,
+        providerID,
+        modelID,
+        parts: [
+          {
+            type: "text",
+            text: message,
+          },
+        ],
+      })
+
+      if (isPiped) {
+        const match = result.parts.findLast((x) => x.type === "text")
+        if (match) process.stdout.write(match.text)
+      }
+      UI.empty()
+    })
+  },
+})

packages/opencode/src/cli/cmd/serve.ts

@@ -0,0 +1,48 @@
+import { Provider } from "../../provider/provider"
+import { Server } from "../../server/server"
+import { Share } from "../../share/share"
+import { bootstrap } from "../bootstrap"
+import { cmd } from "./cmd"
+
+export const ServeCommand = cmd({
+  command: "serve",
+  builder: (yargs) =>
+    yargs
+      .option("port", {
+        alias: ["p"],
+        type: "number",
+        describe: "port to listen on",
+        default: 4096,
+      })
+      .option("hostname", {
+        alias: ["h"],
+        type: "string",
+        describe: "hostname to listen on",
+        default: "127.0.0.1",
+      }),
+  describe: "starts a headless opencode server",
+  handler: async (args) => {
+    const cwd = process.cwd()
+    await bootstrap({ cwd }, async () => {
+      const providers = await Provider.list()
+      if (Object.keys(providers).length === 0) {
+        return "needs_provider"
+      }
+
+      const hostname = args.hostname
+      const port = args.port
+
+      await Share.init()
+      const server = Server.listen({
+        port,
+        hostname,
+      })
+
+      console.log(`opencode server listening on http://${server.hostname}:${server.port}`)
+
+      await new Promise(() => {})
+
+      server.stop()
+    })
+  },
+})

packages/opencode/src/cli/cmd/tui.ts

@@ -0,0 +1,153 @@
+import { Global } from "../../global"
+import { Provider } from "../../provider/provider"
+import { Server } from "../../server/server"
+import { bootstrap } from "../bootstrap"
+import { UI } from "../ui"
+import { cmd } from "./cmd"
+import path from "path"
+import fs from "fs/promises"
+import { Installation } from "../../installation"
+import { Config } from "../../config/config"
+import { Bus } from "../../bus"
+import { Log } from "../../util/log"
+
+export const TuiCommand = cmd({
+  command: "$0 [project]",
+  describe: "start opencode tui",
+  builder: (yargs) =>
+    yargs
+      .positional("project", {
+        type: "string",
+        describe: "path to start opencode in",
+      })
+      .option("model", {
+        type: "string",
+        alias: ["m"],
+        describe: "model to use in the format of provider/model",
+      })
+      .option("prompt", {
+        alias: ["p"],
+        type: "string",
+        describe: "prompt to use",
+      }),
+  handler: async (args) => {
+    while (true) {
+      const cwd = args.project ? path.resolve(args.project) : process.cwd()
+      try {
+        process.chdir(cwd)
+      } catch (e) {
+        UI.error("Failed to change directory to " + cwd)
+        return
+      }
+      const result = await bootstrap({ cwd }, async (app) => {
+        const providers = await Provider.list()
+        if (Object.keys(providers).length === 0) {
+          return "needs_provider"
+        }
+
+        const server = Server.listen({
+          port: 0,
+          hostname: "127.0.0.1",
+        })
+
+        let cmd = ["go", "run", "./main.go"]
+        let cwd = Bun.fileURLToPath(new URL("../../../../tui/cmd/opencode", import.meta.url))
+        if (Bun.embeddedFiles.length > 0) {
+          const blob = Bun.embeddedFiles[0] as File
+          let binaryName = blob.name
+          if (process.platform === "win32" && !binaryName.endsWith(".exe")) {
+            binaryName += ".exe"
+          }
+          const binary = path.join(Global.Path.cache, "tui", binaryName)
+          const file = Bun.file(binary)
+          if (!(await file.exists())) {
+            await Bun.write(file, blob, { mode: 0o755 })
+            await fs.chmod(binary, 0o755)
+          }
+          cwd = process.cwd()
+          cmd = [binary]
+        }
+        Log.Default.info("tui", {
+          cmd,
+        })
+        const proc = Bun.spawn({
+          cmd: [
+            ...cmd,
+            ...(args.model ? ["--model", args.model] : []),
+            ...(args.prompt ? ["--prompt", args.prompt] : []),
+          ],
+          cwd,
+          stdout: "inherit",
+          stderr: "inherit",
+          stdin: "inherit",
+          env: {
+            ...process.env,
+            OPENCODE_SERVER: server.url.toString(),
+            OPENCODE_APP_INFO: JSON.stringify(app),
+          },
+          onExit: () => {
+            server.stop()
+          },
+        })
+
+        ;(async () => {
+          if (Installation.VERSION === "dev") return
+          if (Installation.isSnapshot()) return
+          const config = await Config.global()
+          if (config.autoupdate === false) return
+          const latest = await Installation.latest().catch(() => {})
+          if (!latest) return
+          if (Installation.VERSION === latest) return
+          const method = await Installation.method()
+          if (method === "unknown") return
+          await Installation.upgrade(method, latest)
+            .then(() => {
+              Bus.publish(Installation.Event.Updated, { version: latest })
+            })
+            .catch(() => {})
+        })()
+
+        await proc.exited
+        server.stop()
+
+        return "done"
+      })
+      if (result === "done") break
+      if (result === "needs_provider") {
+        UI.empty()
+        UI.println(UI.logo("   "))
+        const result = await Bun.spawn({
+          cmd: [...getOpencodeCommand(), "auth", "login"],
+          cwd: process.cwd(),
+          stdout: "inherit",
+          stderr: "inherit",
+          stdin: "inherit",
+        }).exited
+        if (result !== 0) return
+        UI.empty()
+      }
+    }
+  },
+})
+
+/**
+ * Get the correct command to run opencode CLI
+ * In development: ["bun", "run", "packages/opencode/src/index.ts"]
+ * In production: ["/path/to/opencode"]
+ */
+function getOpencodeCommand(): string[] {
+  // Check if OPENCODE_BIN_PATH is set (used by shell wrapper scripts)
+  if (process.env["OPENCODE_BIN_PATH"]) {
+    return [process.env["OPENCODE_BIN_PATH"]]
+  }
+
+  const execPath = process.execPath.toLowerCase()
+
+  if (Installation.isDev()) {
+    // In development, use bun to run the TypeScript entry point
+    return [execPath, "run", process.argv[1]]
+  }
+
+  // In production, use the current executable path
+  return [process.execPath]
+}

packages/opencode/src/cli/cmd/upgrade.ts

@@ -0,0 +1,57 @@
+import type { Argv } from "yargs"
+import { UI } from "../ui"
+import * as prompts from "@clack/prompts"
+import { Installation } from "../../installation"
+
+export const UpgradeCommand = {
+  command: "upgrade [target]",
+  describe: "upgrade opencode to the latest or a specific version",
+  builder: (yargs: Argv) => {
+    return yargs
+      .positional("target", {
+        describe: "version to upgrade to, for ex '0.1.48' or 'v0.1.48'",
+        type: "string",
+      })
+      .option("method", {
+        alias: "m",
+        describe: "installation method to use",
+        type: "string",
+        choices: ["curl", "npm", "pnpm", "bun", "brew"],
+      })
+  },
+  handler: async (args: { target?: string; method?: string }) => {
+    UI.empty()
+    UI.println(UI.logo("  "))
+    UI.empty()
+    prompts.intro("Upgrade")
+    const detectedMethod = await Installation.method()
+    const method = (args.method as Installation.Method) ?? detectedMethod
+    if (method === "unknown") {
+      prompts.log.error(`opencode is installed to ${process.execPath} and seems to be managed by a package manager`)
+      prompts.outro("Done")
+      return
+    }
+    prompts.log.info("Using method: " + method)
+    const target = args.target ?? (await Installation.latest())
+
+    if (Installation.VERSION === target) {
+      prompts.log.warn(`opencode upgrade skipped: ${target} is already installed`)
+      prompts.outro("Done")
+      return
+    }
+
+    prompts.log.info(`From ${Installation.VERSION} → ${target}`)
+    const spinner = prompts.spinner()
+    spinner.start("Upgrading...")
+    const err = await Installation.upgrade(method, target).catch((err) => err)
+    if (err) {
+      spinner.stop("Upgrade failed")
+      if (err instanceof Installation.UpgradeFailedError) prompts.log.error(err.data.stderr)
+      else if (err instanceof Error) prompts.log.error(err.message)
+      prompts.outro("Done")
+      return
+    }
+    spinner.stop("Upgrade complete")
+    prompts.outro("Done")
+  },
+}

packages/opencode/src/cli/error.ts

@@ -0,0 +1,16 @@
+import { Config } from "../config/config"
+import { MCP } from "../mcp"
+import { UI } from "./ui"
+
+export function FormatError(input: unknown) {
+  if (MCP.Failed.isInstance(input))
+    return `MCP server "${input.data.name}" failed. Note, opencode does not support MCP authentication yet.`
+  if (Config.JsonError.isInstance(input)) return `Config file at ${input.data.path} is not valid JSON`
+  if (Config.InvalidError.isInstance(input))
+    return [
+      `Config file at ${input.data.path} is invalid`,
+      ...(input.data.issues?.map((issue) => "↳ " + issue.message + " " + issue.path.join(".")) ?? []),
+    ].join("\n")
+
+  if (UI.CancelledError.isInstance(input)) return ""
+}

packages/opencode/src/cli/ui.ts

@@ -0,0 +1,79 @@
+import { z } from "zod"
+import { EOL } from "os"
+import { NamedError } from "../util/error"
+
+export namespace UI {
+  const LOGO = [
+    [`█▀▀█ █▀▀█ █▀▀ █▀▀▄ `, `█▀▀ █▀▀█ █▀▀▄ █▀▀`],
+    [`█░░█ █░░█ █▀▀ █░░█ `, `█░░ █░░█ █░░█ █▀▀`],
+    [`▀▀▀▀ █▀▀▀ ▀▀▀ ▀  ▀ `, `▀▀▀ ▀▀▀▀ ▀▀▀  ▀▀▀`],
+  ]
+
+  export const CancelledError = NamedError.create("UICancelledError", z.void())
+
+  export const Style = {
+    TEXT_HIGHLIGHT: "\x1b[96m",
+    TEXT_HIGHLIGHT_BOLD: "\x1b[96m\x1b[1m",
+    TEXT_DIM: "\x1b[90m",
+    TEXT_DIM_BOLD: "\x1b[90m\x1b[1m",
+    TEXT_NORMAL: "\x1b[0m",
+    TEXT_NORMAL_BOLD: "\x1b[1m",
+    TEXT_WARNING: "\x1b[93m",
+    TEXT_WARNING_BOLD: "\x1b[93m\x1b[1m",
+    TEXT_DANGER: "\x1b[91m",
+    TEXT_DANGER_BOLD: "\x1b[91m\x1b[1m",
+    TEXT_SUCCESS: "\x1b[92m",
+    TEXT_SUCCESS_BOLD: "\x1b[92m\x1b[1m",
+    TEXT_INFO: "\x1b[94m",
+    TEXT_INFO_BOLD: "\x1b[94m\x1b[1m",
+  }
+
+  export function println(...message: string[]) {
+    print(...message)
+    Bun.stderr.write(EOL)
+  }
+
+  export function print(...message: string[]) {
+    blank = false
+    Bun.stderr.write(message.join(" "))
+  }
+
+  let blank = false
+  export function empty() {
+    if (blank) return
+    println("" + Style.TEXT_NORMAL)
+    blank = true
+  }
+
+  export function logo(pad?: string) {
+    const result = []
+    for (const row of LOGO) {
+      if (pad) result.push(pad)
+      result.push(Bun.color("gray", "ansi"))
+      result.push(row[0])
+      result.push("\x1b[0m")
+      result.push(row[1])
+      result.push(EOL)
+    }
+    return result.join("").trimEnd()
+  }
+
+  export async function input(prompt: string): Promise<string> {
+    const readline = require("readline")
+    const rl = readline.createInterface({
+      input: process.stdin,
+      output: process.stdout,
+    })
+
+    return new Promise((resolve) => {
+      rl.question(prompt, (answer: string) => {
+        rl.close()
+        resolve(answer.trim())
+      })
+    })
+  }
+
+  export function error(message: string) {
+    println(Style.TEXT_DANGER_BOLD + "Error: " + Style.TEXT_NORMAL + message)
+  }
+}

packages/opencode/src/config/config.ts

@@ -0,0 +1,198 @@
+import { Log } from "../util/log"
+import path from "path"
+import { z } from "zod"
+import { App } from "../app/app"
+import { Filesystem } from "../util/filesystem"
+import { ModelsDev } from "../provider/models"
+import { mergeDeep } from "remeda"
+import { Global } from "../global"
+import fs from "fs/promises"
+import { lazy } from "../util/lazy"
+import { NamedError } from "../util/error"
+
+export namespace Config {
+  const log = Log.create({ service: "config" })
+
+  export const state = App.state("config", async (app) => {
+    let result = await global()
+    for (const file of ["opencode.jsonc", "opencode.json"]) {
+      const found = await Filesystem.findUp(file, app.path.cwd, app.path.root)
+      for (const resolved of found.toReversed()) {
+        result = mergeDeep(result, await load(resolved))
+      }
+    }
+    log.info("loaded", result)
+
+    return result
+  })
+
+  export const McpLocal = z
+    .object({
+      type: z.literal("local").describe("Type of MCP server connection"),
+      command: z.string().array().describe("Command and arguments to run the MCP server"),
+      environment: z
+        .record(z.string(), z.string())
+        .optional()
+        .describe("Environment variables to set when running the MCP server"),
+      enabled: z.boolean().optional().describe("Enable or disable the MCP server on startup"),
+    })
+    .strict()
+    .openapi({
+      ref: "McpLocalConfig",
+    })
+
+  export const McpRemote = z
+    .object({
+      type: z.literal("remote").describe("Type of MCP server connection"),
+      url: z.string().describe("URL of the remote MCP server"),
+      enabled: z.boolean().optional().describe("Enable or disable the MCP server on startup"),
+    })
+    .strict()
+    .openapi({
+      ref: "McpRemoteConfig",
+    })
+
+  export const Mcp = z.discriminatedUnion("type", [McpLocal, McpRemote])
+  export type Mcp = z.infer<typeof Mcp>
+
+  export const Keybinds = z
+    .object({
+      leader: z.string().optional().describe("Leader key for keybind combinations"),
+      help: z.string().optional().describe("Show help dialog"),
+      editor_open: z.string().optional().describe("Open external editor"),
+      session_new: z.string().optional().describe("Create a new session"),
+      session_list: z.string().optional().describe("List all sessions"),
+      session_share: z.string().optional().describe("Share current session"),
+      session_interrupt: z.string().optional().describe("Interrupt current session"),
+      session_compact: z.string().optional().describe("Toggle compact mode for session"),
+      tool_details: z.string().optional().describe("Show tool details"),
+      model_list: z.string().optional().describe("List available models"),
+      theme_list: z.string().optional().describe("List available themes"),
+      project_init: z.string().optional().describe("Initialize project configuration"),
+      input_clear: z.string().optional().describe("Clear input field"),
+      input_paste: z.string().optional().describe("Paste from clipboard"),
+      input_submit: z.string().optional().describe("Submit input"),
+      input_newline: z.string().optional().describe("Insert newline in input"),
+      history_previous: z.string().optional().describe("Navigate to previous history item"),
+      history_next: z.string().optional().describe("Navigate to next history item"),
+      messages_page_up: z.string().optional().describe("Scroll messages up by one page"),
+      messages_page_down: z.string().optional().describe("Scroll messages down by one page"),
+      messages_half_page_up: z.string().optional().describe("Scroll messages up by half page"),
+      messages_half_page_down: z.string().optional().describe("Scroll messages down by half page"),
+      messages_previous: z.string().optional().describe("Navigate to previous message"),
+      messages_next: z.string().optional().describe("Navigate to next message"),
+      messages_first: z.string().optional().describe("Navigate to first message"),
+      messages_last: z.string().optional().describe("Navigate to last message"),
+      app_exit: z.string().optional().describe("Exit the application"),
+    })
+    .strict()
+    .openapi({
+      ref: "KeybindsConfig",
+    })
+  export const Info = z
+    .object({
+      $schema: z.string().optional().describe("JSON schema reference for configuration validation"),
+      theme: z.string().optional().describe("Theme name to use for the interface"),
+      keybinds: Keybinds.optional().describe("Custom keybind configurations"),
+      autoshare: z.boolean().optional().describe("Share newly created sessions automatically"),
+      autoupdate: z.boolean().optional().describe("Automatically update to the latest version"),
+      disabled_providers: z.array(z.string()).optional().describe("Disable providers that are loaded automatically"),
+      model: z.string().describe("Model to use in the format of provider/model, eg anthropic/claude-2").optional(),
+      provider: z
+        .record(
+          ModelsDev.Provider.partial().extend({
+            models: z.record(ModelsDev.Model.partial()),
+            options: z.record(z.any()).optional(),
+          }),
+        )
+        .optional()
+        .describe("Custom provider configurations and model overrides"),
+      mcp: z.record(z.string(), Mcp).optional().describe("MCP (Model Context Protocol) server configurations"),
+      instructions: z.array(z.string()).optional().describe("Additional instruction files or patterns to include"),
+      experimental: z
+        .object({
+          hook: z
+            .object({
+              file_edited: z
+                .record(
+                  z.string(),
+                  z
+                    .object({
+                      command: z.string().array(),
+                      environment: z.record(z.string(), z.string()).optional(),
+                    })
+                    .array(),
+                )
+                .optional(),
+              session_completed: z
+                .object({
+                  command: z.string().array(),
+                  environment: z.record(z.string(), z.string()).optional(),
+                })
+                .array()
+                .optional(),
+            })
+            .optional(),
+        })
+        .optional(),
+    })
+    .strict()
+    .openapi({
+      ref: "Config",
+    })
+
+  export type Info = z.output<typeof Info>
+
+  export const global = lazy(async () => {
+    let result = await load(path.join(Global.Path.config, "config.json"))
+
+    await import(path.join(Global.Path.config, "config"), {
+      with: {
+        type: "toml",
+      },
+    })
+      .then(async (mod) => {
+        const { provider, model, ...rest } = mod.default
+        if (provider && model) result.model = `${provider}/${model}`
+        result["$schema"] = "https://opencode.ai/config.json"
+        result = mergeDeep(result, rest)
+        await Bun.write(path.join(Global.Path.config, "config.json"), JSON.stringify(result, null, 2))
+        await fs.unlink(path.join(Global.Path.config, "config"))
+      })
+      .catch(() => {})
+
+    return result
+  })
+
+  async function load(path: string) {
+    const data = await Bun.file(path)
+      .json()
+      .catch((err) => {
+        if (err.code === "ENOENT") return {}
+        throw new JsonError({ path }, { cause: err })
+      })
+
+    const parsed = Info.safeParse(data)
+    if (parsed.success) return parsed.data
+    throw new InvalidError({ path, issues: parsed.error.issues })
+  }
+
+  export const JsonError = NamedError.create(
+    "ConfigJsonError",
+    z.object({
+      path: z.string(),
+    }),
+  )
+
+  export const InvalidError = NamedError.create(
+    "ConfigInvalidError",
+    z.object({
+      path: z.string(),
+      issues: z.custom<z.ZodIssue[]>().optional(),
+    }),
+  )
+
+  export function get() {
+    return state()
+  }
+}

packages/opencode/src/config/hooks.ts

@@ -0,0 +1,52 @@
+import { App } from "../app/app"
+import { Bus } from "../bus"
+import { File } from "../file"
+import { Session } from "../session"
+import { Log } from "../util/log"
+import { Config } from "./config"
+import path from "path"
+
+export namespace ConfigHooks {
+  const log = Log.create({ service: "config.hooks" })
+
+  export function init() {
+    log.info("init")
+    const app = App.info()
+
+    Bus.subscribe(File.Event.Edited, async (payload) => {
+      const cfg = await Config.get()
+      const ext = path.extname(payload.properties.file)
+      for (const item of cfg.experimental?.hook?.file_edited?.[ext] ?? []) {
+        log.info("file_edited", {
+          file: payload.properties.file,
+          command: item.command,
+        })
+        Bun.spawn({
+          cmd: item.command.map((x) => x.replace("$FILE", payload.properties.file)),
+          env: item.environment,
+          cwd: app.path.cwd,
+          stdout: "ignore",
+          stderr: "ignore",
+        })
+      }
+    })
+
+    Bus.subscribe(Session.Event.Idle, async () => {
+      const cfg = await Config.get()
+      if (cfg.experimental?.hook?.session_completed) {
+        for (const item of cfg.experimental.hook.session_completed) {
+          log.info("session_completed", {
+            command: item.command,
+          })
+          Bun.spawn({
+            cmd: item.command,
+            cwd: App.info().path.cwd,
+            env: item.environment,
+            stdout: "ignore",
+            stderr: "ignore",
+          })
+        }
+      }
+    })
+  }
+}

packages/opencode/src/file/fzf.ts

@@ -0,0 +1,108 @@
+import path from "path"
+import { Global } from "../global"
+import fs from "fs/promises"
+import { z } from "zod"
+import { NamedError } from "../util/error"
+import { lazy } from "../util/lazy"
+import { Log } from "../util/log"
+
+export namespace Fzf {
+  const log = Log.create({ service: "fzf" })
+
+  const VERSION = "0.62.0"
+  const PLATFORM = {
+    darwin: { extension: "tar.gz" },
+    linux: { extension: "tar.gz" },
+    win32: { extension: "zip" },
+  } as const
+
+  export const ExtractionFailedError = NamedError.create(
+    "FzfExtractionFailedError",
+    z.object({
+      filepath: z.string(),
+      stderr: z.string(),
+    }),
+  )
+
+  export const UnsupportedPlatformError = NamedError.create(
+    "FzfUnsupportedPlatformError",
+    z.object({
+      platform: z.string(),
+    }),
+  )
+
+  export const DownloadFailedError = NamedError.create(
+    "FzfDownloadFailedError",
+    z.object({
+      url: z.string(),
+      status: z.number(),
+    }),
+  )
+
+  const state = lazy(async () => {
+    let filepath = Bun.which("fzf")
+    if (filepath) {
+      log.info("found", { filepath })
+      return { filepath }
+    }
+    filepath = path.join(Global.Path.bin, "fzf" + (process.platform === "win32" ? ".exe" : ""))
+
+    const file = Bun.file(filepath)
+    if (!(await file.exists())) {
+      const archMap = { x64: "amd64", arm64: "arm64" } as const
+      const arch = archMap[process.arch as keyof typeof archMap] ?? "amd64"
+
+      const config = PLATFORM[process.platform as keyof typeof PLATFORM]
+      if (!config) throw new UnsupportedPlatformError({ platform: process.platform })
+
+      const version = VERSION
+      const platformName = process.platform === "win32" ? "windows" : process.platform
+      const filename = `fzf-${version}-${platformName}_${arch}.${config.extension}`
+      const url = `https://github.com/junegunn/fzf/releases/download/v${version}/${filename}`
+
+      const response = await fetch(url)
+      if (!response.ok) throw new DownloadFailedError({ url, status: response.status })
+
+      const buffer = await response.arrayBuffer()
+      const archivePath = path.join(Global.Path.bin, filename)
+      await Bun.write(archivePath, buffer)
+      if (config.extension === "tar.gz") {
+        const proc = Bun.spawn(["tar", "-xzf", archivePath, "fzf"], {
+          cwd: Global.Path.bin,
+          stderr: "pipe",
+          stdout: "pipe",
+        })
+        await proc.exited
+        if (proc.exitCode !== 0)
+          throw new ExtractionFailedError({
+            filepath,
+            stderr: await Bun.readableStreamToText(proc.stderr),
+          })
+      }
+      if (config.extension === "zip") {
+        const proc = Bun.spawn(["unzip", "-j", archivePath, "fzf.exe", "-d", Global.Path.bin], {
+          cwd: Global.Path.bin,
+          stderr: "pipe",
+          stdout: "ignore",
+        })
+        await proc.exited
+        if (proc.exitCode !== 0)
+          throw new ExtractionFailedError({
+            filepath: archivePath,
+            stderr: await Bun.readableStreamToText(proc.stderr),
+          })
+      }
+      await fs.unlink(archivePath)
+      if (process.platform !== "win32") await fs.chmod(filepath, 0o755)
+    }
+
+    return {
+      filepath,
+    }
+  })
+
+  export async function filepath() {
+    const { filepath } = await state()
+    return filepath
+  }
+}

packages/opencode/src/file/index.ts

@@ -0,0 +1,110 @@
+import { z } from "zod"
+import { Bus } from "../bus"
+import { $ } from "bun"
+import { createPatch } from "diff"
+import path from "path"
+import * as git from "isomorphic-git"
+import { App } from "../app/app"
+import fs from "fs"
+import { Log } from "../util/log"
+
+export namespace File {
+  const log = Log.create({ service: "file" })
+
+  export const Event = {
+    Edited: Bus.event(
+      "file.edited",
+      z.object({
+        file: z.string(),
+      }),
+    ),
+  }
+
+  export async function status() {
+    const app = App.info()
+    if (!app.git) return []
+
+    const diffOutput = await $`git diff --numstat HEAD`.cwd(app.path.cwd).quiet().nothrow().text()
+
+    const changedFiles = []
+
+    if (diffOutput.trim()) {
+      const lines = diffOutput.trim().split("\n")
+      for (const line of lines) {
+        const [added, removed, filepath] = line.split("\t")
+        changedFiles.push({
+          file: filepath,
+          added: added === "-" ? 0 : parseInt(added, 10),
+          removed: removed === "-" ? 0 : parseInt(removed, 10),
+          status: "modified",
+        })
+      }
+    }
+
+    const untrackedOutput = await $`git ls-files --others --exclude-standard`.cwd(app.path.cwd).quiet().nothrow().text()
+
+    if (untrackedOutput.trim()) {
+      const untrackedFiles = untrackedOutput.trim().split("\n")
+      for (const filepath of untrackedFiles) {
+        try {
+          const content = await Bun.file(path.join(app.path.root, filepath)).text()
+          const lines = content.split("\n").length
+          changedFiles.push({
+            file: filepath,
+            added: lines,
+            removed: 0,
+            status: "added",
+          })
+        } catch {
+          continue
+        }
+      }
+    }
+
+    // Get deleted files
+    const deletedOutput = await $`git diff --name-only --diff-filter=D HEAD`.cwd(app.path.cwd).quiet().nothrow().text()
+
+    if (deletedOutput.trim()) {
+      const deletedFiles = deletedOutput.trim().split("\n")
+      for (const filepath of deletedFiles) {
+        changedFiles.push({
+          file: filepath,
+          added: 0,
+          removed: 0, // Could get original line count but would require another git command
+          status: "deleted",
+        })
+      }
+    }
+
+    return changedFiles.map((x) => ({
+      ...x,
+      file: path.relative(app.path.cwd, path.join(app.path.root, x.file)),
+    }))
+  }
+
+  export async function read(file: string) {
+    using _ = log.time("read", { file })
+    const app = App.info()
+    const full = path.join(app.path.cwd, file)
+    const content = await Bun.file(full)
+      .text()
+      .catch(() => "")
+      .then((x) => x.trim())
+    if (app.git) {
+      const rel = path.relative(app.path.root, full)
+      const diff = await git.status({
+        fs,
+        dir: app.path.root,
+        filepath: rel,
+      })
+      if (diff !== "unmodified") {
+        const original = await $`git show HEAD:${rel}`.cwd(app.path.root).quiet().nothrow().text()
+        const patch = createPatch(file, original, content, "old", "new", {
+          context: Infinity,
+        })
+        return { type: "patch", content: patch }
+      }
+    }
+    return { type: "raw", content }
+  }
+}

packages/opencode/src/file/ripgrep.ts

@@ -0,0 +1,329 @@
+// Ripgrep utility functions
+import path from "path"
+import { Global } from "../global"
+import fs from "fs/promises"
+import { z } from "zod"
+import { NamedError } from "../util/error"
+import { lazy } from "../util/lazy"
+import { $ } from "bun"
+import { Fzf } from "./fzf"
+
+export namespace Ripgrep {
+  const Stats = z.object({
+    elapsed: z.object({
+      secs: z.number(),
+      nanos: z.number(),
+      human: z.string(),
+    }),
+    searches: z.number(),
+    searches_with_match: z.number(),
+    bytes_searched: z.number(),
+    bytes_printed: z.number(),
+    matched_lines: z.number(),
+    matches: z.number(),
+  })
+
+  const Begin = z.object({
+    type: z.literal("begin"),
+    data: z.object({
+      path: z.object({
+        text: z.string(),
+      }),
+    }),
+  })
+
+  export const Match = z.object({
+    type: z.literal("match"),
+    data: z.object({
+      path: z.object({
+        text: z.string(),
+      }),
+      lines: z.object({
+        text: z.string(),
+      }),
+      line_number: z.number(),
+      absolute_offset: z.number(),
+      submatches: z.array(
+        z.object({
+          match: z.object({
+            text: z.string(),
+          }),
+          start: z.number(),
+          end: z.number(),
+        }),
+      ),
+    }),
+  })
+
+  const End = z.object({
+    type: z.literal("end"),
+    data: z.object({
+      path: z.object({
+        text: z.string(),
+      }),
+      binary_offset: z.number().nullable(),
+      stats: Stats,
+    }),
+  })
+
+  const Summary = z.object({
+    type: z.literal("summary"),
+    data: z.object({
+      elapsed_total: z.object({
+        human: z.string(),
+        nanos: z.number(),
+        secs: z.number(),
+      }),
+      stats: Stats,
+    }),
+  })
+
+  const Result = z.union([Begin, Match, End, Summary])
+
+  export type Result = z.infer<typeof Result>
+  export type Match = z.infer<typeof Match>
+  export type Begin = z.infer<typeof Begin>
+  export type End = z.infer<typeof End>
+  export type Summary = z.infer<typeof Summary>
+  const PLATFORM = {
+    "arm64-darwin": { platform: "aarch64-apple-darwin", extension: "tar.gz" },
+    "arm64-linux": {
+      platform: "aarch64-unknown-linux-gnu",
+      extension: "tar.gz",
+    },
+    "x64-darwin": { platform: "x86_64-apple-darwin", extension: "tar.gz" },
+    "x64-linux": { platform: "x86_64-unknown-linux-musl", extension: "tar.gz" },
+    "x64-win32": { platform: "x86_64-pc-windows-msvc", extension: "zip" },
+  } as const
+
+  export const ExtractionFailedError = NamedError.create(
+    "RipgrepExtractionFailedError",
+    z.object({
+      filepath: z.string(),
+      stderr: z.string(),
+    }),
+  )
+
+  export const UnsupportedPlatformError = NamedError.create(
+    "RipgrepUnsupportedPlatformError",
+    z.object({
+      platform: z.string(),
+    }),
+  )
+
+  export const DownloadFailedError = NamedError.create(
+    "RipgrepDownloadFailedError",
+    z.object({
+      url: z.string(),
+      status: z.number(),
+    }),
+  )
+
+  const state = lazy(async () => {
+    let filepath = Bun.which("rg")
+    if (filepath) return { filepath }
+    filepath = path.join(Global.Path.bin, "rg" + (process.platform === "win32" ? ".exe" : ""))
+
+    const file = Bun.file(filepath)
+    if (!(await file.exists())) {
+      const platformKey = `${process.arch}-${process.platform}` as keyof typeof PLATFORM
+      const config = PLATFORM[platformKey]
+      if (!config) throw new UnsupportedPlatformError({ platform: platformKey })
+
+      const version = "14.1.1"
+      const filename = `ripgrep-${version}-${config.platform}.${config.extension}`
+      const url = `https://github.com/BurntSushi/ripgrep/releases/download/${version}/${filename}`
+
+      const response = await fetch(url)
+      if (!response.ok) throw new DownloadFailedError({ url, status: response.status })
+
+      const buffer = await response.arrayBuffer()
+      const archivePath = path.join(Global.Path.bin, filename)
+      await Bun.write(archivePath, buffer)
+      if (config.extension === "tar.gz") {
+        const args = ["tar", "-xzf", archivePath, "--strip-components=1"]
+
+        if (platformKey.endsWith("-darwin")) args.push("--include=*/rg")
+        if (platformKey.endsWith("-linux")) args.push("--wildcards", "*/rg")
+
+        const proc = Bun.spawn(args, {
+          cwd: Global.Path.bin,
+          stderr: "pipe",
+          stdout: "pipe",
+        })
+        await proc.exited
+        if (proc.exitCode !== 0)
+          throw new ExtractionFailedError({
+            filepath,
+            stderr: await Bun.readableStreamToText(proc.stderr),
+          })
+      }
+      if (config.extension === "zip") {
+        const proc = Bun.spawn(["unzip", "-j", archivePath, "*/rg.exe", "-d", Global.Path.bin], {
+          cwd: Global.Path.bin,
+          stderr: "pipe",
+          stdout: "ignore",
+        })
+        await proc.exited
+        if (proc.exitCode !== 0)
+          throw new ExtractionFailedError({
+            filepath: archivePath,
+            stderr: await Bun.readableStreamToText(proc.stderr),
+          })
+      }
+      await fs.unlink(archivePath)
+      if (!platformKey.endsWith("-win32")) await fs.chmod(filepath, 0o755)
+    }
+
+    return {
+      filepath,
+    }
+  })
+
+  export async function filepath() {
+    const { filepath } = await state()
+    return filepath
+  }
+
+  export async function files(input: { cwd: string; query?: string; glob?: string; limit?: number }) {
+    const commands = [
+      `${await filepath()} --files --hidden --glob='!.git/*' ${input.glob ? `--glob='${input.glob}'` : ``}`,
+    ]
+    if (input.query) commands.push(`${await Fzf.filepath()} --filter=${input.query}`)
+    if (input.limit) commands.push(`head -n ${input.limit}`)
+    const joined = commands.join(" | ")
+    const result = await $`${{ raw: joined }}`.cwd(input.cwd).nothrow().text()
+    return result.split("\n").filter(Boolean)
+  }
+
+  export async function tree(input: { cwd: string; limit?: number }) {
+    const files = await Ripgrep.files({ cwd: input.cwd })
+    interface Node {
+      path: string[]
+      children: Node[]
+    }
+
+    function getPath(node: Node, parts: string[], create: boolean) {
+      if (parts.length === 0) return node
+      let current = node
+      for (const part of parts) {
+        let existing = current.children.find((x) => x.path.at(-1) === part)
+        if (!existing) {
+          if (!create) return
+          existing = {
+            path: current.path.concat(part),
+            children: [],
+          }
+          current.children.push(existing)
+        }
+        current = existing
+      }
+      return current
+    }
+
+    const root: Node = {
+      path: [],
+      children: [],
+    }
+    for (const file of files) {
+      const parts = file.split(path.sep)
+      getPath(root, parts, true)
+    }
+
+    function sort(node: Node) {
+      node.children.sort((a, b) => {
+        if (!a.children.length && b.children.length) return 1
+        if (!b.children.length && a.children.length) return -1
+        return a.path.at(-1)!.localeCompare(b.path.at(-1)!)
+      })
+      for (const child of node.children) {
+        sort(child)
+      }
+    }
+    sort(root)
+
+    let current = [root]
+    const result: Node = {
+      path: [],
+      children: [],
+    }
+
+    let processed = 0
+    const limit = input.limit ?? 50
+    while (current.length > 0) {
+      const next = []
+      for (const node of current) {
+        if (node.children.length) next.push(...node.children)
+      }
+      const max = Math.max(...current.map((x) => x.children.length))
+      for (let i = 0; i < max && processed < limit; i++) {
+        for (const node of current) {
+          const child = node.children[i]
+          if (!child) continue
+          getPath(result, child.path, true)
+          processed++
+          if (processed >= limit) break
+        }
+      }
+      if (processed >= limit) {
+        for (const node of [...current, ...next]) {
+          const compare = getPath(result, node.path, false)
+          if (!compare) continue
+          if (compare?.children.length !== node.children.length) {
+            const diff = node.children.length - compare.children.length
+            compare.children.push({
+              path: compare.path.concat(`[${diff} truncated]`),
+              children: [],
+            })
+          }
+        }
+        break
+      }
+      current = next
+    }
+
+    const lines: string[] = []
+
+    function render(node: Node, depth: number) {
+      const indent = "\t".repeat(depth)
+      lines.push(indent + node.path.at(-1) + (node.children.length ? "/" : ""))
+      for (const child of node.children) {
+        render(child, depth + 1)
+      }
+    }
+    result.children.map((x) => render(x, 0))
+
+    return lines.join("\n")
+  }
+
+  export async function search(input: { cwd: string; pattern: string; glob?: string[]; limit?: number }) {
+    const args = [`${await filepath()}`, "--json", "--hidden", "--glob='!.git/*'"]
+
+    if (input.glob) {
+      for (const g of input.glob) {
+        args.push(`--glob=${g}`)
+      }
+    }
+
+    if (input.limit) {
+      args.push(`--max-count=${input.limit}`)
+    }
+
+    args.push(input.pattern)
+
+    const command = args.join(" ")
+    const result = await $`${{ raw: command }}`.cwd(input.cwd).quiet().nothrow()
+    if (result.exitCode !== 0) {
+      return []
+    }
+
+    const lines = result.text().trim().split("\n").filter(Boolean)
+    // Parse JSON lines from ripgrep output
+
+    return lines
+      .map((line) => JSON.parse(line))
+      .map((parsed) => Result.parse(parsed))
+      .filter((r) => r.type === "match")
+      .map((r) => r.data)
+  }
+}

packages/opencode/src/file/time.ts

@@ -0,0 +1,38 @@
+import { App } from "../app/app"
+import { Log } from "../util/log"
+
+export namespace FileTime {
+  const log = Log.create({ service: "file.time" })
+  export const state = App.state("tool.filetimes", () => {
+    const read: {
+      [sessionID: string]: {
+        [path: string]: Date | undefined
+      }
+    } = {}
+    return {
+      read,
+    }
+  })
+
+  export function read(sessionID: string, file: string) {
+    log.info("read", { sessionID, file })
+    const { read } = state()
+    read[sessionID] = read[sessionID] || {}
+    read[sessionID][file] = new Date()
+  }
+
+  export function get(sessionID: string, file: string) {
+    return state().read[sessionID]?.[file]
+  }
+
+  export async function assert(sessionID: string, filepath: string) {
+    const time = get(sessionID, filepath)
+    if (!time) throw new Error(`You must read the file ${filepath} before overwriting it. Use the Read tool first`)
+    const stats = await Bun.file(filepath).stat()
+    if (stats.mtime.getTime() > time.getTime()) {
+      throw new Error(
+        `File ${filepath} has been modified since it was last read.\nLast modification: ${stats.mtime.toISOString()}\nLast read: ${time.toISOString()}\n\nPlease read the file again before modifying it.`,
+      )
+    }
+  }
+}

packages/opencode/src/file/watch.ts

@@ -0,0 +1,52 @@
+import { z } from "zod"
+import { Bus } from "../bus"
+import fs from "fs"
+import { App } from "../app/app"
+import { Log } from "../util/log"
+import { Flag } from "../flag/flag"
+
+export namespace FileWatcher {
+  const log = Log.create({ service: "file.watcher" })
+
+  export const Event = {
+    Updated: Bus.event(
+      "file.watcher.updated",
+      z.object({
+        file: z.string(),
+        event: z.union([z.literal("rename"), z.literal("change")]),
+      }),
+    ),
+  }
+  const state = App.state(
+    "file.watcher",
+    () => {
+      const app = App.use()
+      if (!app.info.git) return {}
+      try {
+        const watcher = fs.watch(app.info.path.cwd, { recursive: true }, (event, file) => {
+          log.info("change", { file, event })
+          if (!file) return
+          // for some reason async local storage is lost here
+          // https://github.com/oven-sh/bun/issues/20754
+          App.provideExisting(app, async () => {
+            Bus.publish(Event.Updated, {
+              file,
+              event,
+            })
+          })
+        })
+        return { watcher }
+      } catch {
+        return {}
+      }
+    },
+    async (state) => {
+      state.watcher?.close()
+    },
+  )
+
+  export function init() {
+    if (Flag.OPENCODE_DISABLE_WATCHER) return
+    state()
+  }
+}

packages/opencode/src/flag/flag.ts

@@ -0,0 +1,9 @@
+export namespace Flag {
+  export const OPENCODE_AUTO_SHARE = truthy("OPENCODE_AUTO_SHARE")
+  export const OPENCODE_DISABLE_WATCHER = truthy("OPENCODE_DISABLE_WATCHER")
+
+  function truthy(key: string) {
+    const value = process.env[key]?.toLowerCase()
+    return value === "true" || value === "1"
+  }
+}

packages/opencode/src/format/formatter.ts

@@ -0,0 +1,146 @@
+import { App } from "../app/app"
+import { BunProc } from "../bun"
+
+export interface Info {
+  name: string
+  command: string[]
+  environment?: Record<string, string>
+  extensions: string[]
+  enabled(): Promise<boolean>
+}
+
+export const gofmt: Info = {
+  name: "gofmt",
+  command: ["gofmt", "-w", "$FILE"],
+  extensions: [".go"],
+  async enabled() {
+    return Bun.which("gofmt") !== null
+  },
+}
+
+export const mix: Info = {
+  name: "mix",
+  command: ["mix", "format", "$FILE"],
+  extensions: [".ex", ".exs", ".eex", ".heex", ".leex", ".neex", ".sface"],
+  async enabled() {
+    return Bun.which("mix") !== null
+  },
+}
+
+export const prettier: Info = {
+  name: "prettier",
+  command: [BunProc.which(), "run", "prettier", "--write", "$FILE"],
+  environment: {
+    BUN_BE_BUN: "1",
+  },
+  extensions: [
+    ".js",
+    ".jsx",
+    ".mjs",
+    ".cjs",
+    ".ts",
+    ".tsx",
+    ".mts",
+    ".cts",
+    ".html",
+    ".htm",
+    ".css",
+    ".scss",
+    ".sass",
+    ".less",
+    ".vue",
+    ".svelte",
+    ".json",
+    ".jsonc",
+    ".yaml",
+    ".yml",
+    ".toml",
+    ".xml",
+    ".md",
+    ".mdx",
+    ".graphql",
+    ".gql",
+  ],
+  async enabled() {
+    // this is more complicated because we only want to use prettier if it's
+    // being used with the current project
+    try {
+      const proc = Bun.spawn({
+        cmd: [BunProc.which(), "run", "prettier", "--version"],
+        cwd: App.info().path.cwd,
+        env: {
+          BUN_BE_BUN: "1",
+        },
+        stdout: "ignore",
+        stderr: "ignore",
+      })
+      const exit = await proc.exited
+      return exit === 0
+    } catch {
+      return false
+    }
+  },
+}
+
+export const zig: Info = {
+  name: "zig",
+  command: ["zig", "fmt", "$FILE"],
+  extensions: [".zig", ".zon"],
+  async enabled() {
+    return Bun.which("zig") !== null
+  },
+}
+
+export const clang: Info = {
+  name: "clang-format",
+  command: ["clang-format", "-i", "$FILE"],
+  extensions: [".c", ".cc", ".cpp", ".cxx", ".c++", ".h", ".hh", ".hpp", ".hxx", ".h++", ".ino", ".C", ".H"],
+  async enabled() {
+    return Bun.which("clang-format") !== null
+  },
+}
+
+export const ktlint: Info = {
+  name: "ktlint",
+  command: ["ktlint", "-F", "$FILE"],
+  extensions: [".kt", ".kts"],
+  async enabled() {
+    return Bun.which("ktlint") !== null
+  },
+}
+
+export const ruff: Info = {
+  name: "ruff",
+  command: ["ruff", "format", "$FILE"],
+  extensions: [".py", ".pyi"],
+  async enabled() {
+    return Bun.which("ruff") !== null
+  },
+}
+
+export const rubocop: Info = {
+  name: "rubocop",
+  command: ["rubocop", "--autocorrect", "$FILE"],
+  extensions: [".rb", ".rake", ".gemspec", ".ru"],
+  async enabled() {
+    return Bun.which("rubocop") !== null
+  },
+}
+
+export const standardrb: Info = {
+  name: "standardrb",
+  command: ["standardrb", "--fix", "$FILE"],
+  extensions: [".rb", ".rake", ".gemspec", ".ru"],
+  async enabled() {
+    return Bun.which("standardrb") !== null
+  },
+}
+
+export const htmlbeautifier: Info = {
+  name: "htmlbeautifier",
+  command: ["htmlbeautifier", "$FILE"],
+  extensions: [".erb", ".html.erb"],
+  async enabled() {
+    return Bun.which("htmlbeautifier") !== null
+  },
+}

packages/opencode/src/format/index.ts

@@ -0,0 +1,65 @@
+import { App } from "../app/app"
+import { Bus } from "../bus"
+import { File } from "../file"
+import { Log } from "../util/log"
+import path from "path"
+
+import * as Formatter from "./formatter"
+
+export namespace Format {
+  const log = Log.create({ service: "format" })
+
+  const state = App.state("format", () => {
+    const enabled: Record<string, boolean> = {}
+
+    return {
+      enabled,
+    }
+  })
+
+  async function isEnabled(item: Formatter.Info) {
+    const s = state()
+    let status = s.enabled[item.name]
+    if (status === undefined) {
+      status = await item.enabled()
+      s.enabled[item.name] = status
+    }
+    return status
+  }
+
+  async function getFormatter(ext: string) {
+    const result = []
+    for (const item of Object.values(Formatter)) {
+      if (!item.extensions.includes(ext)) continue
+      if (!(await isEnabled(item))) continue
+      result.push(item)
+    }
+    return result
+  }
+
+  export function init() {
+    log.info("init")
+    Bus.subscribe(File.Event.Edited, async (payload) => {
+      const file = payload.properties.file
+      log.info("formatting", { file })
+      const ext = path.extname(file)
+
+      for (const item of await getFormatter(ext)) {
+        log.info("running", { command: item.command })
+        const proc = Bun.spawn({
+          cmd: item.command.map((x) => x.replace("$FILE", file)),
+          cwd: App.info().path.cwd,
+          env: item.environment,
+          stdout: "ignore",
+          stderr: "ignore",
+        })
+        const exit = await proc.exited
+        if (exit !== 0)
+          log.error("failed", {
+            command: item.command,
+            ...item.environment,
+          })
+      }
+    })
+  }
+}

packages/opencode/src/global/index.ts

@@ -0,0 +1,29 @@
+import fs from "fs/promises"
+import { xdgData, xdgCache, xdgConfig, xdgState } from "xdg-basedir"
+import path from "path"
+
+const app = "opencode"
+
+const data = path.join(xdgData!, app)
+const cache = path.join(xdgCache!, app)
+const config = path.join(xdgConfig!, app)
+const state = path.join(xdgState!, app)
+
+export namespace Global {
+  export const Path = {
+    data,
+    bin: path.join(data, "bin"),
+    providers: path.join(config, "providers"),
+    cache,
+    config,
+    state,
+  } as const
+}
+
+await Promise.all([
+  fs.mkdir(Global.Path.data, { recursive: true }),
+  fs.mkdir(Global.Path.config, { recursive: true }),
+  fs.mkdir(Global.Path.cache, { recursive: true }),
+  fs.mkdir(Global.Path.providers, { recursive: true }),
+  fs.mkdir(Global.Path.state, { recursive: true }),
+])

packages/opencode/src/id/id.ts

@@ -0,0 +1,70 @@
+import { z } from "zod"
+import { randomBytes } from "crypto"
+
+export namespace Identifier {
+  const prefixes = {
+    session: "ses",
+    message: "msg",
+    user: "usr",
+  } as const
+
+  export function schema(prefix: keyof typeof prefixes) {
+    return z.string().startsWith(prefixes[prefix])
+  }
+
+  const LENGTH = 26
+
+  // State for monotonic ID generation
+  let lastTimestamp = 0
+  let counter = 0
+
+  export function ascending(prefix: keyof typeof prefixes, given?: string) {
+    return generateID(prefix, false, given)
+  }
+
+  export function descending(prefix: keyof typeof prefixes, given?: string) {
+    return generateID(prefix, true, given)
+  }
+
+  function generateID(prefix: keyof typeof prefixes, descending: boolean, given?: string): string {
+    if (!given) {
+      return generateNewID(prefix, descending)
+    }
+
+    if (!given.startsWith(prefixes[prefix])) {
+      throw new Error(`ID ${given} does not start with ${prefixes[prefix]}`)
+    }
+    return given
+  }
+
+  function randomBase62(length: number): string {
+    const chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+    let result = ""
+    const bytes = randomBytes(length)
+    for (let i = 0; i < length; i++) {
+      result += chars[bytes[i] % 62]
+    }
+    return result
+  }
+
+  function generateNewID(prefix: keyof typeof prefixes, descending: boolean): string {
+    const currentTimestamp = Date.now()
+
+    if (currentTimestamp !== lastTimestamp) {
+      lastTimestamp = currentTimestamp
+      counter = 0
+    }
+    counter++
+
+    let now = BigInt(currentTimestamp) * BigInt(0x1000) + BigInt(counter)
+
+    now = descending ? ~now : now
+
+    const timeBytes = Buffer.alloc(6)
+    for (let i = 0; i < 6; i++) {
+      timeBytes[i] = Number((now >> BigInt(40 - 8 * i)) & BigInt(0xff))
+    }
+
+    return prefixes[prefix] + "_" + timeBytes.toString("hex") + randomBase62(LENGTH - 12)
+  }
+}

packages/opencode/src/index.ts

@@ -0,0 +1,101 @@
+import "zod-openapi/extend"
+import yargs from "yargs"
+import { hideBin } from "yargs/helpers"
+import { RunCommand } from "./cli/cmd/run"
+import { GenerateCommand } from "./cli/cmd/generate"
+import { Log } from "./util/log"
+import { AuthCommand } from "./cli/cmd/auth"
+import { UpgradeCommand } from "./cli/cmd/upgrade"
+import { ModelsCommand } from "./cli/cmd/models"
+import { UI } from "./cli/ui"
+import { Installation } from "./installation"
+import { NamedError } from "./util/error"
+import { FormatError } from "./cli/error"
+import { ServeCommand } from "./cli/cmd/serve"
+import { TuiCommand } from "./cli/cmd/tui"
+import { DebugCommand } from "./cli/cmd/debug"
+
+const cancel = new AbortController()
+
+process.on("unhandledRejection", (e) => {
+  Log.Default.error("rejection", {
+    e: e instanceof Error ? e.message : e,
+  })
+})
+
+process.on("uncaughtException", (e) => {
+  Log.Default.error("exception", {
+    e: e instanceof Error ? e.message : e,
+  })
+})
+
+const cli = yargs(hideBin(process.argv))
+  .scriptName("opencode")
+  .help("help", "show help")
+  .version("version", "show version number", Installation.VERSION)
+  .alias("version", "v")
+  .option("print-logs", {
+    describe: "print logs to stderr",
+    type: "boolean",
+  })
+  .middleware(async () => {
+    await Log.init({ print: process.argv.includes("--print-logs") })
+    Log.Default.info("opencode", {
+      version: Installation.VERSION,
+      args: process.argv.slice(2),
+    })
+  })
+  .usage("\n" + UI.logo())
+  .command(TuiCommand)
+  .command(RunCommand)
+  .command(GenerateCommand)
+  .command(DebugCommand)
+  .command(AuthCommand)
+  .command(UpgradeCommand)
+  .command(ServeCommand)
+  .command(ModelsCommand)
+  .fail((msg) => {
+    if (msg.startsWith("Unknown argument") || msg.startsWith("Not enough non-option arguments")) {
+      cli.showHelp("log")
+    }
+  })
+  .strict()
+
+try {
+  await cli.parse()
+} catch (e) {
+  let data: Record<string, any> = {}
+  if (e instanceof NamedError) {
+    const obj = e.toObject()
+    Object.assign(data, {
+      ...obj.data,
+    })
+  }
+
+  if (e instanceof Error) {
+    Object.assign(data, {
+      name: e.name,
+      message: e.message,
+      cause: e.cause?.toString(),
+    })
+  }
+
+  if (e instanceof ResolveMessage) {
+    Object.assign(data, {
+      name: e.name,
+      message: e.message,
+      code: e.code,
+      specifier: e.specifier,
+      referrer: e.referrer,
+      position: e.position,
+      importKind: e.importKind,
+    })
+  }
+  Log.Default.error("fatal", data)
+  const formatted = FormatError(e)
+  if (formatted) UI.error(formatted)
+  if (formatted === undefined) UI.error("Unexpected error, check log file at " + Log.file() + " for more details")
+  process.exitCode = 1
+}
+
+cancel.abort()

packages/opencode/src/installation/index.ts

@@ -0,0 +1,145 @@
+import path from "path"
+import { $ } from "bun"
+import { z } from "zod"
+import { NamedError } from "../util/error"
+import { Bus } from "../bus"
+import { Log } from "../util/log"
+
+declare global {
+  const OPENCODE_VERSION: string
+}
+
+export namespace Installation {
+  const log = Log.create({ service: "installation" })
+
+  export type Method = Awaited<ReturnType<typeof method>>
+
+  export const Event = {
+    Updated: Bus.event(
+      "installation.updated",
+      z.object({
+        version: z.string(),
+      }),
+    ),
+  }
+
+  export const Info = z
+    .object({
+      version: z.string(),
+      latest: z.string(),
+    })
+    .openapi({
+      ref: "InstallationInfo",
+    })
+  export type Info = z.infer<typeof Info>
+
+  export async function info() {
+    return {
+      version: VERSION,
+      latest: await latest(),
+    }
+  }
+
+  export function isSnapshot() {
+    return VERSION.startsWith("0.0.0")
+  }
+
+  export function isDev() {
+    return VERSION === "dev"
+  }
+
+  export async function method() {
+    if (process.execPath.includes(path.join(".opencode", "bin"))) return "curl"
+    const exec = process.execPath.toLowerCase()
+
+    const checks = [
+      {
+        name: "npm" as const,
+        command: () => $`npm list -g --depth=0`.throws(false).text(),
+      },
+      {
+        name: "yarn" as const,
+        command: () => $`yarn global list`.throws(false).text(),
+      },
+      {
+        name: "pnpm" as const,
+        command: () => $`pnpm list -g --depth=0`.throws(false).text(),
+      },
+      {
+        name: "bun" as const,
+        command: () => $`bun pm ls -g`.throws(false).text(),
+      },
+      {
+        name: "brew" as const,
+        command: () => $`brew list --formula opencode-ai`.throws(false).text(),
+      },
+    ]
+
+    checks.sort((a, b) => {
+      const aMatches = exec.includes(a.name)
+      const bMatches = exec.includes(b.name)
+      if (aMatches && !bMatches) return -1
+      if (!aMatches && bMatches) return 1
+      return 0
+    })
+
+    for (const check of checks) {
+      const output = await check.command()
+      if (output.includes("opencode-ai")) {
+        return check.name
+      }
+    }
+
+    return "unknown"
+  }
+
+  export const UpgradeFailedError = NamedError.create(
+    "UpgradeFailedError",
+    z.object({
+      stderr: z.string(),
+    }),
+  )
+
+  export async function upgrade(method: Method, target: string) {
+    const cmd = (() => {
+      switch (method) {
+        case "curl":
+          return $`curl -fsSL https://opencode.ai/install | bash`.env({
+            ...process.env,
+            VERSION: target,
+          })
+        case "npm":
+          return $`npm install -g opencode-ai@${target}`
+        case "pnpm":
+          return $`pnpm install -g opencode-ai@${target}`
+        case "bun":
+          return $`bun install -g opencode-ai@${target}`
+        case "brew":
+          return $`brew install sst/tap/opencode`.env({
+            HOMEBREW_NO_AUTO_UPDATE: "1",
+          })
+        default:
+          throw new Error(`Unknown method: ${method}`)
+      }
+    })()
+    const result = await cmd.quiet().throws(false)
+    log.info("upgraded", {
+      method,
+      target,
+      stdout: result.stdout.toString(),
+      stderr: result.stderr.toString(),
+    })
+    if (result.exitCode !== 0)
+      throw new UpgradeFailedError({
+        stderr: result.stderr.toString("utf8"),
+      })
+  }
+
+  export const VERSION = typeof OPENCODE_VERSION === "string" ? OPENCODE_VERSION : "dev"
+
+  export async function latest() {
+    return fetch("https://api.github.com/repos/sst/opencode/releases/latest")
+      .then((res) => res.json())
+      .then((data) => data.tag_name.slice(1) as string)
+  }
+}

packages/opencode/src/lsp/client.ts

@@ -0,0 +1,182 @@
+import path from "path"
+import { createMessageConnection, StreamMessageReader, StreamMessageWriter } from "vscode-jsonrpc/node"
+import type { Diagnostic as VSCodeDiagnostic } from "vscode-languageserver-types"
+import { App } from "../app/app"
+import { Log } from "../util/log"
+import { LANGUAGE_EXTENSIONS } from "./language"
+import { Bus } from "../bus"
+import z from "zod"
+import type { LSPServer } from "./server"
+import { NamedError } from "../util/error"
+import { withTimeout } from "../util/timeout"
+
+export namespace LSPClient {
+  const log = Log.create({ service: "lsp.client" })
+
+  export type Info = NonNullable<Awaited<ReturnType<typeof create>>>
+
+  export type Diagnostic = VSCodeDiagnostic
+
+  export const InitializeError = NamedError.create(
+    "LSPInitializeError",
+    z.object({
+      serverID: z.string(),
+    }),
+  )
+
+  export const Event = {
+    Diagnostics: Bus.event(
+      "lsp.client.diagnostics",
+      z.object({
+        serverID: z.string(),
+        path: z.string(),
+      }),
+    ),
+  }
+
+  export async function create(serverID: string, server: LSPServer.Handle) {
+    const app = App.info()
+    log.info("starting client", { id: serverID })
+
+    const connection = createMessageConnection(
+      new StreamMessageReader(server.process.stdout),
+      new StreamMessageWriter(server.process.stdin),
+    )
+
+    const diagnostics = new Map<string, Diagnostic[]>()
+    connection.onNotification("textDocument/publishDiagnostics", (params) => {
+      const path = new URL(params.uri).pathname
+      log.info("textDocument/publishDiagnostics", {
+        path,
+      })
+      const exists = diagnostics.has(path)
+      diagnostics.set(path, params.diagnostics)
+      if (!exists && serverID === "typescript") return
+      Bus.publish(Event.Diagnostics, { path, serverID })
+    })
+    connection.onRequest("workspace/configuration", async () => {
+      return [{}]
+    })
+    connection.listen()
+
+    log.info("sending initialize", { id: serverID })
+    await withTimeout(
+      connection.sendRequest("initialize", {
+        rootUri: "file://" + app.path.cwd,
+        processId: server.process.pid,
+        workspaceFolders: [
+          {
+            name: "workspace",
+            uri: "file://" + app.path.cwd,
+          },
+        ],
+        initializationOptions: {
+          ...server.initialization,
+        },
+        capabilities: {
+          workspace: {
+            configuration: true,
+          },
+          textDocument: {
+            synchronization: {
+              didOpen: true,
+              didChange: true,
+            },
+            publishDiagnostics: {
+              versionSupport: true,
+            },
+          },
+        },
+      }),
+      5_000,
+    ).catch((err) => {
+      log.error("initialize error", { error: err })
+      throw new InitializeError(
+        { serverID },
+        {
+          cause: err,
+        },
+      )
+    })
+
+    await connection.sendNotification("initialized", {})
+    log.info("initialized", {
+      serverID,
+    })
+
+    const files: {
+      [path: string]: number
+    } = {}
+
+    const result = {
+      get serverID() {
+        return serverID
+      },
+      get connection() {
+        return connection
+      },
+      notify: {
+        async open(input: { path: string }) {
+          input.path = path.isAbsolute(input.path) ? input.path : path.resolve(app.path.cwd, input.path)
+          const file = Bun.file(input.path)
+          const text = await file.text()
+          const version = files[input.path]
+          if (version !== undefined) {
+            diagnostics.delete(input.path)
+            await connection.sendNotification("textDocument/didClose", {
+              textDocument: {
+                uri: `file://` + input.path,
+              },
+            })
+          }
+          log.info("textDocument/didOpen", input)
+          diagnostics.delete(input.path)
+          const extension = path.extname(input.path)
+          const languageId = LANGUAGE_EXTENSIONS[extension] ?? "plaintext"
+          await connection.sendNotification("textDocument/didOpen", {
+            textDocument: {
+              uri: `file://` + input.path,
+              languageId,
+              version: 0,
+              text,
+            },
+          })
+          files[input.path] = 0
+          return
+        },
+      },
+      get diagnostics() {
+        return diagnostics
+      },
+      async waitForDiagnostics(input: { path: string }) {
+        input.path = path.isAbsolute(input.path) ? input.path : path.resolve(app.path.cwd, input.path)
+        log.info("waiting for diagnostics", input)
+        let unsub: () => void
+        return await withTimeout(
+          new Promise<void>((resolve) => {
+            unsub = Bus.subscribe(Event.Diagnostics, (event) => {
+              if (event.properties.path === input.path && event.properties.serverID === result.serverID) {
+                log.info("got diagnostics", input)
+                unsub?.()
+                resolve()
+              }
+            })
+          }),
+          3000,
+        )
+          .catch(() => {})
+          .finally(() => {
+            unsub?.()
+          })
+      },
+      async shutdown() {
+        log.info("shutting down", { serverID })
+        connection.end()
+        connection.dispose()
+        log.info("shutdown", { serverID })
+      },
+    }
+
+    return result
+  }
+}

packages/opencode/src/lsp/index.ts

@@ -0,0 +1,140 @@
+import { App } from "../app/app"
+import { Log } from "../util/log"
+import { LSPClient } from "./client"
+import path from "path"
+import { LSPServer } from "./server"
+import { Ripgrep } from "../file/ripgrep"
+import { z } from "zod"
+
+export namespace LSP {
+  const log = Log.create({ service: "lsp" })
+
+  export const Symbol = z
+    .object({
+      name: z.string(),
+      kind: z.number(),
+      location: z.object({
+        uri: z.string(),
+        range: z.object({
+          start: z.object({
+            line: z.number(),
+            character: z.number(),
+          }),
+          end: z.object({
+            line: z.number(),
+            character: z.number(),
+          }),
+        }),
+      }),
+    })
+    .openapi({
+      ref: "LSP.Symbol",
+    })
+  export type Symbol = z.infer<typeof Symbol>
+
+  const state = App.state(
+    "lsp",
+    async (app) => {
+      log.info("initializing")
+      const clients = new Map<string, LSPClient.Info>()
+      for (const server of Object.values(LSPServer)) {
+        for (const extension of server.extensions) {
+          const [file] = await Ripgrep.files({
+            cwd: app.path.cwd,
+            glob: "*" + extension,
+          })
+          if (!file) continue
+          const handle = await server.spawn(App.info())
+          if (!handle) break
+          const client = await LSPClient.create(server.id, handle).catch((err) => log.error("", { error: err }))
+          if (!client) break
+          clients.set(server.id, client)
+          break
+        }
+      }
+      log.info("initialized")
+      return {
+        clients,
+      }
+    },
+    async (state) => {
+      for (const client of state.clients.values()) {
+        await client.shutdown()
+      }
+    },
+  )
+
+  export async function init() {
+    return state()
+  }
+
+  export async function touchFile(input: string, waitForDiagnostics?: boolean) {
+    const extension = path.parse(input).ext
+    const matches = Object.values(LSPServer)
+      .filter((x) => x.extensions.includes(extension))
+      .map((x) => x.id)
+    await run(async (client) => {
+      if (!matches.includes(client.serverID)) return
+      const wait = waitForDiagnostics ? client.waitForDiagnostics({ path: input }) : Promise.resolve()
+      await client.notify.open({ path: input })
+      return wait
+    })
+  }
+
+  export async function diagnostics() {
+    const results: Record<string, LSPClient.Diagnostic[]> = {}
+    for (const result of await run(async (client) => client.diagnostics)) {
+      for (const [path, diagnostics] of result.entries()) {
+        const arr = results[path] || []
+        arr.push(...diagnostics)
+        results[path] = arr
+      }
+    }
+    return results
+  }
+
+  export async function hover(input: { file: string; line: number; character: number }) {
+    return run((client) => {
+      return client.connection.sendRequest("textDocument/hover", {
+        textDocument: {
+          uri: `file://${input.file}`,
+        },
+        position: {
+          line: input.line,
+          character: input.character,
+        },
+      })
+    })
+  }
+
+  export async function workspaceSymbol(query: string) {
+    return run((client) =>
+      client.connection.sendRequest("workspace/symbol", {
+        query,
+      }),
+    ).then((result) => result.flat() as LSP.Symbol[])
+  }
+
+  async function run<T>(input: (client: LSPClient.Info) => Promise<T>): Promise<T[]> {
+    const clients = await state().then((x) => [...x.clients.values()])
+    const tasks = clients.map((x) => input(x))
+    return Promise.all(tasks)
+  }
+
+  export namespace Diagnostic {
+    export function pretty(diagnostic: LSPClient.Diagnostic) {
+      const severityMap = {
+        1: "ERROR",
+        2: "WARN",
+        3: "INFO",
+        4: "HINT",
+      }
+
+      const severity = severityMap[diagnostic.severity || 1]
+      const line = diagnostic.range.start.line + 1
+      const col = diagnostic.range.start.character + 1
+
+      return `${severity} [${line}:${col}] ${diagnostic.message}`
+    }
+  }
+}

packages/opencode/src/lsp/language.ts

@@ -0,0 +1,97 @@
+export const LANGUAGE_EXTENSIONS: Record<string, string> = {
+  ".abap": "abap",
+  ".bat": "bat",
+  ".bib": "bibtex",
+  ".bibtex": "bibtex",
+  ".clj": "clojure",
+  ".coffee": "coffeescript",
+  ".c": "c",
+  ".cpp": "cpp",
+  ".cxx": "cpp",
+  ".cc": "cpp",
+  ".c++": "cpp",
+  ".cs": "csharp",
+  ".css": "css",
+  ".d": "d",
+  ".pas": "pascal",
+  ".pascal": "pascal",
+  ".diff": "diff",
+  ".patch": "diff",
+  ".dart": "dart",
+  ".dockerfile": "dockerfile",
+  ".ex": "elixir",
+  ".exs": "elixir",
+  ".erl": "erlang",
+  ".hrl": "erlang",
+  ".fs": "fsharp",
+  ".fsi": "fsharp",
+  ".fsx": "fsharp",
+  ".fsscript": "fsharp",
+  ".gitcommit": "git-commit",
+  ".gitrebase": "git-rebase",
+  ".go": "go",
+  ".groovy": "groovy",
+  ".hbs": "handlebars",
+  ".handlebars": "handlebars",
+  ".hs": "haskell",
+  ".html": "html",
+  ".htm": "html",
+  ".ini": "ini",
+  ".java": "java",
+  ".js": "javascript",
+  ".jsx": "javascriptreact",
+  ".json": "json",
+  ".tex": "latex",
+  ".latex": "latex",
+  ".less": "less",
+  ".lua": "lua",
+  ".makefile": "makefile",
+  makefile: "makefile",
+  ".md": "markdown",
+  ".markdown": "markdown",
+  ".m": "objective-c",
+  ".mm": "objective-cpp",
+  ".pl": "perl",
+  ".pm": "perl6",
+  ".php": "php",
+  ".ps1": "powershell",
+  ".psm1": "powershell",
+  ".pug": "jade",
+  ".jade": "jade",
+  ".py": "python",
+  ".r": "r",
+  ".cshtml": "razor",
+  ".razor": "razor",
+  ".rb": "ruby",
+  ".rake": "ruby",
+  ".gemspec": "ruby",
+  ".ru": "ruby",
+  ".erb": "erb",
+  ".html.erb": "erb",
+  ".js.erb": "erb",
+  ".css.erb": "erb",
+  ".json.erb": "erb",
+  ".rs": "rust",
+  ".scss": "scss",
+  ".sass": "sass",
+  ".scala": "scala",
+  ".shader": "shaderlab",
+  ".sh": "shellscript",
+  ".bash": "shellscript",
+  ".zsh": "shellscript",
+  ".ksh": "shellscript",
+  ".sql": "sql",
+  ".swift": "swift",
+  ".ts": "typescript",
+  ".tsx": "typescriptreact",
+  ".mts": "typescript",
+  ".cts": "typescript",
+  ".mtsx": "typescriptreact",
+  ".ctsx": "typescriptreact",
+  ".xml": "xml",
+  ".xsl": "xsl",
+  ".yaml": "yaml",
+  ".yml": "yaml",
+  ".mjs": "javascript",
+  ".cjs": "javascript",
+} as const

packages/opencode/src/lsp/server.ts

@@ -0,0 +1,184 @@
+import { spawn, type ChildProcessWithoutNullStreams } from "child_process"
+import type { App } from "../app/app"
+import path from "path"
+import { Global } from "../global"
+import { Log } from "../util/log"
+import { BunProc } from "../bun"
+import { $ } from "bun"
+import fs from "fs/promises"
+
+export namespace LSPServer {
+  const log = Log.create({ service: "lsp.server" })
+
+  export interface Handle {
+    process: ChildProcessWithoutNullStreams
+    initialization?: Record<string, any>
+  }
+
+  export interface Info {
+    id: string
+    extensions: string[]
+    spawn(app: App.Info): Promise<Handle | undefined>
+  }
+
+  export const Typescript: Info = {
+    id: "typescript",
+    extensions: [".ts", ".tsx", ".js", ".jsx", ".mjs", ".cjs", ".mts", ".cts"],
+    async spawn(app) {
+      const tsserver = await Bun.resolve("typescript/lib/tsserver.js", app.path.cwd).catch(() => {})
+      if (!tsserver) return
+      const proc = spawn(BunProc.which(), ["x", "typescript-language-server", "--stdio"], {
+        env: {
+          ...process.env,
+          BUN_BE_BUN: "1",
+        },
+      })
+      return {
+        process: proc,
+        initialization: {
+          tsserver: {
+            path: tsserver,
+          },
+        },
+      }
+    },
+  }
+
+  export const Gopls: Info = {
+    id: "golang",
+    extensions: [".go"],
+    async spawn() {
+      let bin = Bun.which("gopls", {
+        PATH: process.env["PATH"] + ":" + Global.Path.bin,
+      })
+      if (!bin) {
+        if (!Bun.which("go")) return
+        log.info("installing gopls")
+        const proc = Bun.spawn({
+          cmd: ["go", "install", "golang.org/x/tools/gopls@latest"],
+          env: { ...process.env, GOBIN: Global.Path.bin },
+          stdout: "pipe",
+          stderr: "pipe",
+          stdin: "pipe",
+        })
+        const exit = await proc.exited
+        if (exit !== 0) {
+          log.error("Failed to install gopls")
+          return
+        }
+        bin = path.join(Global.Path.bin, "gopls" + (process.platform === "win32" ? ".exe" : ""))
+        log.info(`installed gopls`, {
+          bin,
+        })
+      }
+      return {
+        process: spawn(bin!),
+      }
+    },
+  }
+
+  export const RubyLsp: Info = {
+    id: "ruby-lsp",
+    extensions: [".rb", ".rake", ".gemspec", ".ru"],
+    async spawn() {
+      let bin = Bun.which("ruby-lsp", {
+        PATH: process.env["PATH"] + ":" + Global.Path.bin,
+      })
+      if (!bin) {
+        const ruby = Bun.which("ruby")
+        const gem = Bun.which("gem")
+        if (!ruby || !gem) {
+          log.info("Ruby not found, please install Ruby first")
+          return
+        }
+        log.info("installing ruby-lsp")
+        const proc = Bun.spawn({
+          cmd: ["gem", "install", "ruby-lsp", "--bindir", Global.Path.bin],
+          stdout: "pipe",
+          stderr: "pipe",
+          stdin: "pipe",
+        })
+        const exit = await proc.exited
+        if (exit !== 0) {
+          log.error("Failed to install ruby-lsp")
+          return
+        }
+        bin = path.join(Global.Path.bin, "ruby-lsp" + (process.platform === "win32" ? ".exe" : ""))
+        log.info(`installed ruby-lsp`, {
+          bin,
+        })
+      }
+      return {
+        process: spawn(bin!, ["--stdio"]),
+      }
+    },
+  }
+
+  export const Pyright: Info = {
+    id: "pyright",
+    extensions: [".py", ".pyi"],
+    async spawn() {
+      const proc = spawn(BunProc.which(), ["x", "pyright-langserver", "--stdio"], {
+        env: {
+          ...process.env,
+          BUN_BE_BUN: "1",
+        },
+      })
+      return {
+        process: proc,
+      }
+    },
+  }
+
+  export const ElixirLS: Info = {
+    id: "elixir-ls",
+    extensions: [".ex", ".exs"],
+    async spawn() {
+      let binary = Bun.which("elixir-ls")
+      if (!binary) {
+        const elixirLsPath = path.join(Global.Path.bin, "elixir-ls")
+        binary = path.join(
+          Global.Path.bin,
+          "elixir-ls-master",
+          "release",
+          process.platform === "win32" ? "language_server.bar" : "language_server.sh",
+        )
+
+        if (!(await Bun.file(binary).exists())) {
+          const elixir = Bun.which("elixir")
+          if (!elixir) {
+            log.error("elixir is required to run elixir-ls")
+            return
+          }
+
+          log.info("downloading elixir-ls from GitHub releases")
+
+          const response = await fetch("https://github.com/elixir-lsp/elixir-ls/archive/refs/heads/master.zip")
+          if (!response.ok) return
+          const zipPath = path.join(Global.Path.bin, "elixir-ls.zip")
+          await Bun.file(zipPath).write(response)
+
+          await $`unzip -o -q ${zipPath}`.cwd(Global.Path.bin).nothrow()
+
+          await fs.rm(zipPath, {
+            force: true,
+            recursive: true,
+          })
+
+          await $`mix deps.get && mix compile && mix elixir_ls.release2 -o release`
+            .quiet()
+            .cwd(path.join(Global.Path.bin, "elixir-ls-master"))
+            .env({ MIX_ENV: "prod", ...process.env })
+
+          log.info(`installed elixir-ls`, {
+            path: elixirLsPath,
+          })
+        }
+      }
+
+      return {
+        process: spawn(binary),
+      }
+    },
+  }
+}

packages/opencode/src/mcp/index.ts

@@ -0,0 +1,110 @@
+import { experimental_createMCPClient, type Tool } from "ai"
+import { Experimental_StdioMCPTransport } from "ai/mcp-stdio"
+import { App } from "../app/app"
+import { Config } from "../config/config"
+import { Log } from "../util/log"
+import { NamedError } from "../util/error"
+import { z } from "zod"
+import { Session } from "../session"
+import { Bus } from "../bus"
+
+export namespace MCP {
+  const log = Log.create({ service: "mcp" })
+
+  export const Failed = NamedError.create(
+    "MCPFailed",
+    z.object({
+      name: z.string(),
+    }),
+  )
+
+  const state = App.state(
+    "mcp",
+    async () => {
+      const cfg = await Config.get()
+      const clients: {
+        [name: string]: Awaited<ReturnType<typeof experimental_createMCPClient>>
+      } = {}
+      for (const [key, mcp] of Object.entries(cfg.mcp ?? {})) {
+        if (mcp.enabled === false) {
+          log.info("mcp server disabled", { key })
+          continue
+        }
+        log.info("found", { key, type: mcp.type })
+        if (mcp.type === "remote") {
+          const client = await experimental_createMCPClient({
+            name: key,
+            transport: {
+              type: "sse",
+              url: mcp.url,
+            },
+          }).catch(() => {})
+          if (!client) {
+            Bus.publish(Session.Event.Error, {
+              error: {
+                name: "UnknownError",
+                data: {
+                  message: `MCP server ${key} failed to start`,
+                },
+              },
+            })
+            continue
+          }
+          clients[key] = client
+        }
+
+        if (mcp.type === "local") {
+          const [cmd, ...args] = mcp.command
+          const client = await experimental_createMCPClient({
+            name: key,
+            transport: new Experimental_StdioMCPTransport({
+              stderr: "ignore",
+              command: cmd,
+              args,
+              env: {
+                ...process.env,
+                ...(cmd === "opencode" ? { BUN_BE_BUN: "1" } : {}),
+                ...mcp.environment,
+              },
+            }),
+          }).catch(() => {})
+          if (!client) {
+            Bus.publish(Session.Event.Error, {
+              error: {
+                name: "UnknownError",
+                data: {
+                  message: `MCP server ${key} failed to start`,
+                },
+              },
+            })
+            continue
+          }
+          clients[key] = client
+        }
+      }
+
+      return {
+        clients,
+      }
+    },
+    async (state) => {
+      for (const client of Object.values(state.clients)) {
+        client.close()
+      }
+    },
+  )
+
+  export async function clients() {
+    return state().then((state) => state.clients)
+  }
+
+  export async function tools() {
+    const result: Record<string, Tool> = {}
+    for (const [clientName, client] of Object.entries(await clients())) {
+      for (const [toolName, tool] of Object.entries(await client.tools())) {
+        result[clientName + "_" + toolName] = tool
+      }
+    }
+    return result
+  }
+}

packages/opencode/src/permission/index.ts

@@ -0,0 +1,136 @@
+import { App } from "../app/app"
+import { z } from "zod"
+import { Bus } from "../bus"
+import { Log } from "../util/log"
+
+export namespace Permission {
+  const log = Log.create({ service: "permission" })
+
+  export const Info = z
+    .object({
+      id: z.string(),
+      sessionID: z.string(),
+      title: z.string(),
+      metadata: z.record(z.any()),
+      time: z.object({
+        created: z.number(),
+      }),
+    })
+    .openapi({
+      ref: "permission.info",
+    })
+  export type Info = z.infer<typeof Info>
+
+  export const Event = {
+    Updated: Bus.event("permission.updated", Info),
+  }
+
+  const state = App.state(
+    "permission",
+    () => {
+      const pending: {
+        [sessionID: string]: {
+          [permissionID: string]: {
+            info: Info
+            resolve: () => void
+            reject: (e: any) => void
+          }
+        }
+      } = {}
+
+      const approved: {
+        [sessionID: string]: {
+          [permissionID: string]: Info
+        }
+      } = {}
+
+      return {
+        pending,
+        approved,
+      }
+    },
+    async (state) => {
+      for (const pending of Object.values(state.pending)) {
+        for (const item of Object.values(pending)) {
+          item.reject(new RejectedError(item.info.sessionID, item.info.id))
+        }
+      }
+    },
+  )
+
+  export function ask(input: {
+    id: Info["id"]
+    sessionID: Info["sessionID"]
+    title: Info["title"]
+    metadata: Info["metadata"]
+  }) {
+    return
+    const { pending, approved } = state()
+    log.info("asking", {
+      sessionID: input.sessionID,
+      permissionID: input.id,
+    })
+    if (approved[input.sessionID]?.[input.id]) {
+      log.info("previously approved", {
+        sessionID: input.sessionID,
+        permissionID: input.id,
+      })
+      return
+    }
+    const info: Info = {
+      id: input.id,
+      sessionID: input.sessionID,
+      title: input.title,
+      metadata: input.metadata,
+      time: {
+        created: Date.now(),
+      },
+    }
+    pending[input.sessionID] = pending[input.sessionID] || {}
+    return new Promise<void>((resolve, reject) => {
+      pending[input.sessionID][input.id] = {
+        info,
+        resolve,
+        reject,
+      }
+      setTimeout(() => {
+        respond({
+          sessionID: input.sessionID,
+          permissionID: input.id,
+          response: "always",
+        })
+      }, 1000)
+      Bus.publish(Event.Updated, info)
+    })
+  }
+
+  export function respond(input: {
+    sessionID: Info["sessionID"]
+    permissionID: Info["id"]
+    response: "once" | "always" | "reject"
+  }) {
+    log.info("response", input)
+    const { pending, approved } = state()
+    const match = pending[input.sessionID]?.[input.permissionID]
+    if (!match) return
+    delete pending[input.sessionID][input.permissionID]
+    if (input.response === "reject") {
+      match.reject(new RejectedError(input.sessionID, input.permissionID))
+      return
+    }
+    match.resolve()
+    if (input.response === "always") {
+      approved[input.sessionID] = approved[input.sessionID] || {}
+      approved[input.sessionID][input.permissionID] = match.info
+    }
+  }
+
+  export class RejectedError extends Error {
+    constructor(
+      public readonly sessionID: string,
+      public readonly permissionID: string,
+    ) {
+      super(`The user rejected permission to use this functionality`)
+    }
+  }
+}

packages/opencode/src/provider/models-macro.ts

@@ -0,0 +1,4 @@
+export async function data() {
+  const json = await fetch("https://models.dev/api.json").then((x) => x.text())
+  return json
+}

packages/opencode/src/provider/models.ts

@@ -0,0 +1,70 @@
+import { Global } from "../global"
+import { Log } from "../util/log"
+import path from "path"
+import { z } from "zod"
+import { data } from "./models-macro" with { type: "macro" }
+
+export namespace ModelsDev {
+  const log = Log.create({ service: "models.dev" })
+  const filepath = path.join(Global.Path.cache, "models.json")
+
+  export const Model = z
+    .object({
+      id: z.string(),
+      name: z.string(),
+      release_date: z.string(),
+      attachment: z.boolean(),
+      reasoning: z.boolean(),
+      temperature: z.boolean(),
+      tool_call: z.boolean(),
+      cost: z.object({
+        input: z.number(),
+        output: z.number(),
+        cache_read: z.number().optional(),
+        cache_write: z.number().optional(),
+      }),
+      limit: z.object({
+        context: z.number(),
+        output: z.number(),
+      }),
+      options: z.record(z.any()),
+    })
+    .openapi({
+      ref: "Model",
+    })
+  export type Model = z.infer<typeof Model>
+
+  export const Provider = z
+    .object({
+      api: z.string().optional(),
+      name: z.string(),
+      env: z.array(z.string()),
+      id: z.string(),
+      npm: z.string().optional(),
+      models: z.record(Model),
+    })
+    .openapi({
+      ref: "Provider",
+    })
+
+  export type Provider = z.infer<typeof Provider>
+
+  export async function get() {
+    const file = Bun.file(filepath)
+    const result = await file.json().catch(() => {})
+    if (result) {
+      refresh()
+      return result as Record<string, Provider>
+    }
+    refresh()
+    const json = await data()
+    return JSON.parse(json) as Record<string, Provider>
+  }
+
+  async function refresh() {
+    const file = Bun.file(filepath)
+    log.info("refreshing")
+    const result = await fetch("https://models.dev/api.json").catch(() => {})
+    if (result && result.ok) await Bun.write(file, result)
+  }
+}

packages/opencode/src/provider/provider.ts

@@ -0,0 +1,534 @@
+import z from "zod"
+import { App } from "../app/app"
+import { Config } from "../config/config"
+import { mergeDeep, sortBy } from "remeda"
+import { NoSuchModelError, type LanguageModel, type Provider as SDK } from "ai"
+import { Log } from "../util/log"
+import { BunProc } from "../bun"
+import { BashTool } from "../tool/bash"
+import { EditTool } from "../tool/edit"
+import { WebFetchTool } from "../tool/webfetch"
+import { GlobTool } from "../tool/glob"
+import { GrepTool } from "../tool/grep"
+import { ListTool } from "../tool/ls"
+import { PatchTool } from "../tool/patch"
+import { ReadTool } from "../tool/read"
+import type { Tool } from "../tool/tool"
+import { WriteTool } from "../tool/write"
+import { TodoReadTool, TodoWriteTool } from "../tool/todo"
+import { AuthAnthropic } from "../auth/anthropic"
+import { AuthCopilot } from "../auth/copilot"
+import { ModelsDev } from "./models"
+import { NamedError } from "../util/error"
+import { Auth } from "../auth"
+// import { TaskTool } from "../tool/task"
+
+export namespace Provider {
+  const log = Log.create({ service: "provider" })
+
+  type CustomLoader = (
+    provider: ModelsDev.Provider,
+    api?: string,
+  ) => Promise<{
+    autoload: boolean
+    getModel?: (sdk: any, modelID: string) => Promise<any>
+    options?: Record<string, any>
+  }>
+
+  type Source = "env" | "config" | "custom" | "api"
+
+  const CUSTOM_LOADERS: Record<string, CustomLoader> = {
+    async anthropic(provider) {
+      const access = await AuthAnthropic.access()
+      if (!access) return { autoload: false }
+      for (const model of Object.values(provider.models)) {
+        model.cost = {
+          input: 0,
+          output: 0,
+        }
+      }
+      return {
+        autoload: true,
+        options: {
+          apiKey: "",
+          async fetch(input: any, init: any) {
+            const access = await AuthAnthropic.access()
+            const headers = {
+              ...init.headers,
+              authorization: `Bearer ${access}`,
+              "anthropic-beta": "oauth-2025-04-20",
+            }
+            delete headers["x-api-key"]
+            return fetch(input, {
+              ...init,
+              headers,
+            })
+          },
+        },
+      }
+    },
+    "github-copilot": async (provider) => {
+      const copilot = await AuthCopilot()
+      if (!copilot) return { autoload: false }
+      let info = await Auth.get("github-copilot")
+      if (!info || info.type !== "oauth") return { autoload: false }
+
+      if (provider && provider.models) {
+        for (const model of Object.values(provider.models)) {
+          model.cost = {
+            input: 0,
+            output: 0,
+          }
+        }
+      }
+
+      return {
+        autoload: true,
+        options: {
+          apiKey: "",
+          async fetch(input: any, init: any) {
+            const info = await Auth.get("github-copilot")
+            if (!info || info.type !== "oauth") return
+            if (!info.access || info.expires < Date.now()) {
+              const tokens = await copilot.access(info.refresh)
+              if (!tokens) throw new Error("GitHub Copilot authentication expired")
+              await Auth.set("github-copilot", {
+                type: "oauth",
+                ...tokens,
+              })
+              info.access = tokens.access
+            }
+            let isAgentCall = false
+            try {
+              const body = typeof init.body === "string" ? JSON.parse(init.body) : init.body
+              if (body?.messages) {
+                isAgentCall = body.messages.some((msg: any) => msg.role && ["tool", "assistant"].includes(msg.role))
+              }
+            } catch {}
+            const headers = {
+              ...init.headers,
+              ...copilot.HEADERS,
+              Authorization: `Bearer ${info.access}`,
+              "Openai-Intent": "conversation-edits",
+              "X-Initiator": isAgentCall ? "agent" : "user",
+            }
+            delete headers["x-api-key"]
+            return fetch(input, {
+              ...init,
+              headers,
+            })
+          },
+        },
+      }
+    },
+    openai: async () => {
+      return {
+        autoload: false,
+        async getModel(sdk: any, modelID: string) {
+          return sdk.responses(modelID)
+        },
+        options: {},
+      }
+    },
+    "amazon-bedrock": async () => {
+      if (!process.env["AWS_PROFILE"] && !process.env["AWS_ACCESS_KEY_ID"]) return { autoload: false }
+
+      const region = process.env["AWS_REGION"] ?? "us-east-1"
+
+      const { fromNodeProviderChain } = await import(await BunProc.install("@aws-sdk/credential-providers"))
+      return {
+        autoload: true,
+        options: {
+          region,
+          credentialProvider: fromNodeProviderChain(),
+        },
+        async getModel(sdk: any, modelID: string) {
+          let regionPrefix = region.split("-")[0]
+
+          switch (regionPrefix) {
+            case "us": {
+              const modelRequiresPrefix = ["claude", "deepseek"].some((m) => modelID.includes(m))
+              if (modelRequiresPrefix) {
+                modelID = `${regionPrefix}.${modelID}`
+              }
+              break
+            }
+            case "eu": {
+              const regionRequiresPrefix = [
+                "eu-west-1",
+                "eu-west-3",
+                "eu-north-1",
+                "eu-central-1",
+                "eu-south-1",
+                "eu-south-2",
+              ].some((r) => region.includes(r))
+              const modelRequiresPrefix = ["claude", "nova-lite", "nova-micro", "llama3", "pixtral"].some((m) =>
+                modelID.includes(m),
+              )
+              if (regionRequiresPrefix && modelRequiresPrefix) {
+                modelID = `${regionPrefix}.${modelID}`
+              }
+              break
+            }
+            case "ap": {
+              const modelRequiresPrefix = ["claude", "nova-lite", "nova-micro", "nova-pro"].some((m) =>
+                modelID.includes(m),
+              )
+              if (modelRequiresPrefix) {
+                regionPrefix = "apac"
+                modelID = `${regionPrefix}.${modelID}`
+              }
+              break
+            }
+          }
+
+          return sdk.languageModel(modelID)
+        },
+      }
+    },
+    openrouter: async () => {
+      return {
+        autoload: false,
+        options: {
+          headers: {
+            "HTTP-Referer": "https://opencode.ai/",
+            "X-Title": "opencode",
+          },
+        },
+      }
+    },
+  }
+
+  const state = App.state("provider", async () => {
+    const config = await Config.get()
+    const database = await ModelsDev.get()
+
+    const providers: {
+      [providerID: string]: {
+        source: Source
+        info: ModelsDev.Provider
+        getModel?: (sdk: any, modelID: string) => Promise<any>
+        options: Record<string, any>
+      }
+    } = {}
+    const models = new Map<string, { info: ModelsDev.Model; language: LanguageModel }>()
+    const sdk = new Map<string, SDK>()
+
+    log.info("init")
+
+    function mergeProvider(
+      id: string,
+      options: Record<string, any>,
+      source: Source,
+      getModel?: (sdk: any, modelID: string) => Promise<any>,
+    ) {
+      const provider = providers[id]
+      if (!provider) {
+        const info = database[id]
+        if (!info) return
+        if (info.api) options["baseURL"] = info.api
+        providers[id] = {
+          source,
+          info,
+          options,
+          getModel,
+        }
+        return
+      }
+      provider.options = mergeDeep(provider.options, options)
+      provider.source = source
+      provider.getModel = getModel ?? provider.getModel
+    }
+
+    const configProviders = Object.entries(config.provider ?? {})
+
+    for (const [providerID, provider] of configProviders) {
+      const existing = database[providerID]
+      const parsed: ModelsDev.Provider = {
+        id: providerID,
+        npm: provider.npm ?? existing?.npm,
+        name: provider.name ?? existing?.name ?? providerID,
+        env: provider.env ?? existing?.env ?? [],
+        api: provider.api ?? existing?.api,
+        models: existing?.models ?? {},
+      }
+
+      for (const [modelID, model] of Object.entries(provider.models ?? {})) {
+        const existing = parsed.models[modelID]
+        const parsedModel: ModelsDev.Model = {
+          id: modelID,
+          name: model.name ?? existing?.name ?? modelID,
+          release_date: model.release_date ?? existing?.release_date,
+          attachment: model.attachment ?? existing?.attachment ?? false,
+          reasoning: model.reasoning ?? existing?.reasoning ?? false,
+          temperature: model.temperature ?? existing?.temperature ?? false,
+          tool_call: model.tool_call ?? existing?.tool_call ?? true,
+          cost: {
+            ...existing?.cost,
+            ...model.cost,
+            input: 0,
+            output: 0,
+            cache_read: 0,
+            cache_write: 0,
+          },
+          options: {
+            ...existing?.options,
+            ...model.options,
+          },
+          limit: model.limit ??
+            existing?.limit ?? {
+              context: 0,
+              output: 0,
+            },
+        }
+        parsed.models[modelID] = parsedModel
+      }
+      database[providerID] = parsed
+    }
+
+    const disabled = await Config.get().then((cfg) => new Set(cfg.disabled_providers ?? []))
+    // load env
+    for (const [providerID, provider] of Object.entries(database)) {
+      if (disabled.has(providerID)) continue
+      const apiKey = provider.env.map((item) => process.env[item]).at(0)
+      if (!apiKey) continue
+      mergeProvider(
+        providerID,
+        // only include apiKey if there's only one potential option
+        provider.env.length === 1 ? { apiKey } : {},
+        "env",
+      )
+    }
+
+    // load apikeys
+    for (const [providerID, provider] of Object.entries(await Auth.all())) {
+      if (disabled.has(providerID)) continue
+      if (provider.type === "api") {
+        mergeProvider(providerID, { apiKey: provider.key }, "api")
+      }
+    }
+
+    // load custom
+    for (const [providerID, fn] of Object.entries(CUSTOM_LOADERS)) {
+      if (disabled.has(providerID)) continue
+      const result = await fn(database[providerID])
+      if (result && (result.autoload || providers[providerID])) {
+        mergeProvider(providerID, result.options ?? {}, "custom", result.getModel)
+      }
+    }
+
+    // load config
+    for (const [providerID, provider] of configProviders) {
+      mergeProvider(providerID, provider.options ?? {}, "config")
+    }
+
+    for (const [providerID, provider] of Object.entries(providers)) {
+      if (Object.keys(provider.info.models).length === 0) {
+        delete providers[providerID]
+        continue
+      }
+      log.info("found", { providerID })
+    }
+
+    return {
+      models,
+      providers,
+      sdk,
+    }
+  })
+
+  export async function list() {
+    return state().then((state) => state.providers)
+  }
+
+  async function getSDK(provider: ModelsDev.Provider) {
+    return (async () => {
+      using _ = log.time("getSDK", {
+        providerID: provider.id,
+      })
+      const s = await state()
+      const existing = s.sdk.get(provider.id)
+      if (existing) return existing
+      const pkg = provider.npm ?? provider.id
+      const mod = await import(await BunProc.install(pkg, "beta"))
+      const fn = mod[Object.keys(mod).find((key) => key.startsWith("create"))!]
+      const loaded = fn(s.providers[provider.id]?.options)
+      s.sdk.set(provider.id, loaded)
+      return loaded as SDK
+    })().catch((e) => {
+      throw new InitError({ providerID: provider.id }, { cause: e })
+    })
+  }
+
+  export async function getModel(providerID: string, modelID: string) {
+    const key = `${providerID}/${modelID}`
+    const s = await state()
+    if (s.models.has(key)) return s.models.get(key)!
+
+    log.info("getModel", {
+      providerID,
+      modelID,
+    })
+
+    const provider = s.providers[providerID]
+    if (!provider) throw new ModelNotFoundError({ providerID, modelID })
+    const info = provider.info.models[modelID]
+    if (!info) throw new ModelNotFoundError({ providerID, modelID })
+    const sdk = await getSDK(provider.info)
+
+    try {
+      const language = provider.getModel ? await provider.getModel(sdk, modelID) : sdk.languageModel(modelID)
+      log.info("found", { providerID, modelID })
+      s.models.set(key, {
+        info,
+        language,
+      })
+      return {
+        info,
+        language,
+      }
+    } catch (e) {
+      if (e instanceof NoSuchModelError)
+        throw new ModelNotFoundError(
+          {
+            modelID: modelID,
+            providerID,
+          },
+          { cause: e },
+        )
+      throw e
+    }
+  }
+
+  const priority = ["gemini-2.5-pro-preview", "codex-mini", "claude-sonnet-4"]
+  export function sort(models: ModelsDev.Model[]) {
+    return sortBy(
+      models,
+      [(model) => priority.findIndex((filter) => model.id.includes(filter)), "desc"],
+      [(model) => (model.id.includes("latest") ? 0 : 1), "asc"],
+      [(model) => model.id, "desc"],
+    )
+  }
+
+  export async function defaultModel() {
+    const cfg = await Config.get()
+    if (cfg.model) return parseModel(cfg.model)
+    const provider = await list()
+      .then((val) => Object.values(val))
+      .then((x) => x.find((p) => !cfg.provider || Object.keys(cfg.provider).includes(p.info.id)))
+    if (!provider) throw new Error("no providers found")
+    const [model] = sort(Object.values(provider.info.models))
+    if (!model) throw new Error("no models found")
+    return {
+      providerID: provider.info.id,
+      modelID: model.id,
+    }
+  }
+
+  export function parseModel(model: string) {
+    const [providerID, ...rest] = model.split("/")
+    return {
+      providerID: providerID,
+      modelID: rest.join("/"),
+    }
+  }
+
+  const TOOLS = [
+    BashTool,
+    EditTool,
+    WebFetchTool,
+    GlobTool,
+    GrepTool,
+    ListTool,
+    // LspDiagnosticTool,
+    // LspHoverTool,
+    PatchTool,
+    ReadTool,
+    // MultiEditTool,
+    WriteTool,
+    TodoWriteTool,
+    TodoReadTool,
+    // TaskTool,
+  ]
+
+  const TOOL_MAPPING: Record<string, Tool.Info[]> = {
+    anthropic: TOOLS.filter((t) => t.id !== "patch"),
+    openai: TOOLS.map((t) => ({
+      ...t,
+      parameters: optionalToNullable(t.parameters),
+    })),
+    azure: TOOLS.map((t) => ({
+      ...t,
+      parameters: optionalToNullable(t.parameters),
+    })),
+    google: TOOLS,
+  }
+
+  export async function tools(providerID: string) {
+    /*
+    const cfg = await Config.get()
+    if (cfg.tool?.provider?.[providerID])
+      return cfg.tool.provider[providerID].map(
+        (id) => TOOLS.find((t) => t.id === id)!,
+      )
+        */
+    return TOOL_MAPPING[providerID] ?? TOOLS
+  }
+
+  function optionalToNullable(schema: z.ZodTypeAny): z.ZodTypeAny {
+    if (schema instanceof z.ZodObject) {
+      const shape = schema.shape
+      const newShape: Record<string, z.ZodTypeAny> = {}
+
+      for (const [key, value] of Object.entries(shape)) {
+        const zodValue = value as z.ZodTypeAny
+        if (zodValue instanceof z.ZodOptional) {
+          newShape[key] = zodValue.unwrap().nullable()
+        } else {
+          newShape[key] = optionalToNullable(zodValue)
+        }
+      }
+
+      return z.object(newShape)
+    }
+
+    if (schema instanceof z.ZodArray) {
+      return z.array(optionalToNullable(schema.element))
+    }
+
+    if (schema instanceof z.ZodUnion) {
+      return z.union(
+        schema.options.map((option: z.ZodTypeAny) => optionalToNullable(option)) as [
+          z.ZodTypeAny,
+          z.ZodTypeAny,
+          ...z.ZodTypeAny[],
+        ],
+      )
+    }
+
+    return schema
+  }
+
+  export const ModelNotFoundError = NamedError.create(
+    "ProviderModelNotFoundError",
+    z.object({
+      providerID: z.string(),
+      modelID: z.string(),
+    }),
+  )
+
+  export const InitError = NamedError.create(
+    "ProviderInitError",
+    z.object({
+      providerID: z.string(),
+    }),
+  )
+
+  export const AuthError = NamedError.create(
+    "ProviderAuthError",
+    z.object({
+      providerID: z.string(),
+      message: z.string(),
+    }),
+  )
+}

packages/opencode/src/provider/transform.ts

@@ -0,0 +1,37 @@
+import type { ModelMessage } from "ai"
+import { unique } from "remeda"
+
+export namespace ProviderTransform {
+  export function message(msgs: ModelMessage[], providerID: string, modelID: string) {
+    if (providerID === "anthropic" || modelID.includes("anthropic")) {
+      const system = msgs.filter((msg) => msg.role === "system").slice(0, 2)
+      const final = msgs.filter((msg) => msg.role !== "system").slice(-2)
+
+      for (const msg of unique([...system, ...final])) {
+        msg.providerOptions = {
+          ...msg.providerOptions,
+          anthropic: {
+            cacheControl: { type: "ephemeral" },
+          },
+          openaiCompatible: {
+            cache_control: { type: "ephemeral" },
+          },
+        }
+      }
+    }
+    if (providerID === "amazon-bedrock" || modelID.includes("anthropic")) {
+      const system = msgs.filter((msg) => msg.role === "system").slice(0, 2)
+      const final = msgs.filter((msg) => msg.role !== "system").slice(-2)
+
+      for (const msg of unique([...system, ...final])) {
+        msg.providerOptions = {
+          ...msg.providerOptions,
+          bedrock: {
+            cachePoint: { type: "ephemeral" },
+          },
+        }
+      }
+    }
+    return msgs
+  }
+}

packages/opencode/src/server/server.ts

@@ -0,0 +1,672 @@
+import { Log } from "../util/log"
+import { Bus } from "../bus"
+import { describeRoute, generateSpecs, openAPISpecs } from "hono-openapi"
+import { Hono } from "hono"
+import { streamSSE } from "hono/streaming"
+import { Session } from "../session"
+import { resolver, validator as zValidator } from "hono-openapi/zod"
+import { z } from "zod"
+import { Provider } from "../provider/provider"
+import { App } from "../app/app"
+import { mapValues } from "remeda"
+import { NamedError } from "../util/error"
+import { ModelsDev } from "../provider/models"
+import { Ripgrep } from "../file/ripgrep"
+import { Config } from "../config/config"
+import { File } from "../file"
+import { LSP } from "../lsp"
+import { MessageV2 } from "../session/message-v2"
+
+const ERRORS = {
+  400: {
+    description: "Bad request",
+    content: {
+      "application/json": {
+        schema: resolver(
+          z
+            .object({
+              data: z.record(z.string(), z.any()),
+            })
+            .openapi({
+              ref: "Error",
+            }),
+        ),
+      },
+    },
+  },
+} as const
+
+export namespace Server {
+  const log = Log.create({ service: "server" })
+
+  export type Routes = ReturnType<typeof app>
+
+  function app() {
+    const app = new Hono()
+
+    const result = app
+      .onError((err, c) => {
+        if (err instanceof NamedError) {
+          return c.json(err.toObject(), {
+            status: 400,
+          })
+        }
+        return c.json(new NamedError.Unknown({ message: err.toString() }).toObject(), {
+          status: 400,
+        })
+      })
+      .use(async (c, next) => {
+        log.info("request", {
+          method: c.req.method,
+          path: c.req.path,
+        })
+        const start = Date.now()
+        await next()
+        log.info("response", {
+          duration: Date.now() - start,
+        })
+      })
+      .get(
+        "/doc",
+        openAPISpecs(app, {
+          documentation: {
+            info: {
+              title: "opencode",
+              version: "0.0.3",
+              description: "opencode api",
+            },
+            openapi: "3.0.0",
+          },
+        }),
+      )
+      .get(
+        "/event",
+        describeRoute({
+          description: "Get events",
+          responses: {
+            200: {
+              description: "Event stream",
+              content: {
+                "application/json": {
+                  schema: resolver(
+                    Bus.payloads().openapi({
+                      ref: "Event",
+                    }),
+                  ),
+                },
+              },
+            },
+          },
+        }),
+        async (c) => {
+          log.info("event connected")
+          return streamSSE(c, async (stream) => {
+            stream.writeSSE({
+              data: JSON.stringify({}),
+            })
+            const unsub = Bus.subscribeAll(async (event) => {
+              await stream.writeSSE({
+                data: JSON.stringify(event),
+              })
+            })
+            await new Promise<void>((resolve) => {
+              stream.onAbort(() => {
+                unsub()
+                resolve()
+                log.info("event disconnected")
+              })
+            })
+          })
+        },
+      )
+      .get(
+        "/app",
+        describeRoute({
+          description: "Get app info",
+          responses: {
+            200: {
+              description: "200",
+              content: {
+                "application/json": {
+                  schema: resolver(App.Info),
+                },
+              },
+            },
+          },
+        }),
+        async (c) => {
+          return c.json(App.info())
+        },
+      )
+      .post(
+        "/app/init",
+        describeRoute({
+          description: "Initialize the app",
+          responses: {
+            200: {
+              description: "Initialize the app",
+              content: {
+                "application/json": {
+                  schema: resolver(z.boolean()),
+                },
+              },
+            },
+          },
+        }),
+        async (c) => {
+          await App.initialize()
+          return c.json(true)
+        },
+      )
+      .get(
+        "/config",
+        describeRoute({
+          description: "Get config info",
+          responses: {
+            200: {
+              description: "Get config info",
+              content: {
+                "application/json": {
+                  schema: resolver(Config.Info),
+                },
+              },
+            },
+          },
+        }),
+        async (c) => {
+          return c.json(await Config.get())
+        },
+      )
+      .get(
+        "/session",
+        describeRoute({
+          description: "List all sessions",
+          responses: {
+            200: {
+              description: "List of sessions",
+              content: {
+                "application/json": {
+                  schema: resolver(Session.Info.array()),
+                },
+              },
+            },
+          },
+        }),
+        async (c) => {
+          const sessions = await Array.fromAsync(Session.list())
+          return c.json(sessions)
+        },
+      )
+      .post(
+        "/session",
+        describeRoute({
+          description: "Create a new session",
+          responses: {
+            ...ERRORS,
+            200: {
+              description: "Successfully created session",
+              content: {
+                "application/json": {
+                  schema: resolver(Session.Info),
+                },
+              },
+            },
+          },
+        }),
+        async (c) => {
+          const session = await Session.create()
+          return c.json(session)
+        },
+      )
+      .delete(
+        "/session/:id",
+        describeRoute({
+          description: "Delete a session and all its data",
+          responses: {
+            200: {
+              description: "Successfully deleted session",
+              content: {
+                "application/json": {
+                  schema: resolver(z.boolean()),
+                },
+              },
+            },
+          },
+        }),
+        zValidator(
+          "param",
+          z.object({
+            id: z.string(),
+          }),
+        ),
+        async (c) => {
+          await Session.remove(c.req.valid("param").id)
+          return c.json(true)
+        },
+      )
+      .post(
+        "/session/:id/init",
+        describeRoute({
+          description: "Analyze the app and create an AGENTS.md file",
+          responses: {
+            200: {
+              description: "200",
+              content: {
+                "application/json": {
+                  schema: resolver(z.boolean()),
+                },
+              },
+            },
+          },
+        }),
+        zValidator(
+          "param",
+          z.object({
+            id: z.string().openapi({ description: "Session ID" }),
+          }),
+        ),
+        zValidator(
+          "json",
+          z.object({
+            providerID: z.string(),
+            modelID: z.string(),
+          }),
+        ),
+        async (c) => {
+          const sessionID = c.req.valid("param").id
+          const body = c.req.valid("json")
+          await Session.initialize({ ...body, sessionID })
+          return c.json(true)
+        },
+      )
+      .post(
+        "/session/:id/abort",
+        describeRoute({
+          description: "Abort a session",
+          responses: {
+            200: {
+              description: "Aborted session",
+              content: {
+                "application/json": {
+                  schema: resolver(z.boolean()),
+                },
+              },
+            },
+          },
+        }),
+        zValidator(
+          "param",
+          z.object({
+            id: z.string(),
+          }),
+        ),
+        async (c) => {
+          return c.json(Session.abort(c.req.valid("param").id))
+        },
+      )
+      .post(
+        "/session/:id/share",
+        describeRoute({
+          description: "Share a session",
+          responses: {
+            200: {
+              description: "Successfully shared session",
+              content: {
+                "application/json": {
+                  schema: resolver(Session.Info),
+                },
+              },
+            },
+          },
+        }),
+        zValidator(
+          "param",
+          z.object({
+            id: z.string(),
+          }),
+        ),
+        async (c) => {
+          const id = c.req.valid("param").id
+          await Session.share(id)
+          const session = await Session.get(id)
+          return c.json(session)
+        },
+      )
+      .delete(
+        "/session/:id/share",
+        describeRoute({
+          description: "Unshare the session",
+          responses: {
+            200: {
+              description: "Successfully unshared session",
+              content: {
+                "application/json": {
+                  schema: resolver(Session.Info),
+                },
+              },
+            },
+          },
+        }),
+        zValidator(
+          "param",
+          z.object({
+            id: z.string(),
+          }),
+        ),
+        async (c) => {
+          const id = c.req.valid("param").id
+          await Session.unshare(id)
+          const session = await Session.get(id)
+          return c.json(session)
+        },
+      )
+      .post(
+        "/session/:id/summarize",
+        describeRoute({
+          description: "Summarize the session",
+          responses: {
+            200: {
+              description: "Summarized session",
+              content: {
+                "application/json": {
+                  schema: resolver(z.boolean()),
+                },
+              },
+            },
+          },
+        }),
+        zValidator(
+          "param",
+          z.object({
+            id: z.string().openapi({ description: "Session ID" }),
+          }),
+        ),
+        zValidator(
+          "json",
+          z.object({
+            providerID: z.string(),
+            modelID: z.string(),
+          }),
+        ),
+        async (c) => {
+          const id = c.req.valid("param").id
+          const body = c.req.valid("json")
+          await Session.summarize({ ...body, sessionID: id })
+          return c.json(true)
+        },
+      )
+      .get(
+        "/session/:id/message",
+        describeRoute({
+          description: "List messages for a session",
+          responses: {
+            200: {
+              description: "List of messages",
+              content: {
+                "application/json": {
+                  schema: resolver(MessageV2.Info.array()),
+                },
+              },
+            },
+          },
+        }),
+        zValidator(
+          "param",
+          z.object({
+            id: z.string().openapi({ description: "Session ID" }),
+          }),
+        ),
+        async (c) => {
+          const messages = await Session.messages(c.req.valid("param").id)
+          return c.json(messages)
+        },
+      )
+      .post(
+        "/session/:id/message",
+        describeRoute({
+          description: "Create and send a new message to a session",
+          responses: {
+            200: {
+              description: "Created message",
+              content: {
+                "application/json": {
+                  schema: resolver(MessageV2.Assistant),
+                },
+              },
+            },
+          },
+        }),
+        zValidator(
+          "param",
+          z.object({
+            id: z.string().openapi({ description: "Session ID" }),
+          }),
+        ),
+        zValidator(
+          "json",
+          z.object({
+            providerID: z.string(),
+            modelID: z.string(),
+            parts: MessageV2.UserPart.array(),
+          }),
+        ),
+        async (c) => {
+          const sessionID = c.req.valid("param").id
+          const body = c.req.valid("json")
+          const msg = await Session.chat({ ...body, sessionID })
+          return c.json(msg)
+        },
+      )
+      .get(
+        "/config/providers",
+        describeRoute({
+          description: "List all providers",
+          responses: {
+            200: {
+              description: "List of providers",
+              content: {
+                "application/json": {
+                  schema: resolver(
+                    z.object({
+                      providers: ModelsDev.Provider.array(),
+                      default: z.record(z.string(), z.string()),
+                    }),
+                  ),
+                },
+              },
+            },
+          },
+        }),
+        async (c) => {
+          const providers = await Provider.list().then((x) => mapValues(x, (item) => item.info))
+          return c.json({
+            providers: Object.values(providers),
+            default: mapValues(providers, (item) => Provider.sort(Object.values(item.models))[0].id),
+          })
+        },
+      )
+      .get(
+        "/find",
+        describeRoute({
+          description: "Find text in files",
+          responses: {
+            200: {
+              description: "Matches",
+              content: {
+                "application/json": {
+                  schema: resolver(Ripgrep.Match.shape.data.array()),
+                },
+              },
+            },
+          },
+        }),
+        zValidator(
+          "query",
+          z.object({
+            pattern: z.string(),
+          }),
+        ),
+        async (c) => {
+          const app = App.info()
+          const pattern = c.req.valid("query").pattern
+          const result = await Ripgrep.search({
+            cwd: app.path.cwd,
+            pattern,
+            limit: 10,
+          })
+          return c.json(result)
+        },
+      )
+      .get(
+        "/find/file",
+        describeRoute({
+          description: "Find files",
+          responses: {
+            200: {
+              description: "File paths",
+              content: {
+                "application/json": {
+                  schema: resolver(z.string().array()),
+                },
+              },
+            },
+          },
+        }),
+        zValidator(
+          "query",
+          z.object({
+            query: z.string(),
+          }),
+        ),
+        async (c) => {
+          const query = c.req.valid("query").query
+          const app = App.info()
+          const result = await Ripgrep.files({
+            cwd: app.path.cwd,
+            query,
+            limit: 10,
+          })
+          return c.json(result)
+        },
+      )
+      .get(
+        "/find/symbol",
+        describeRoute({
+          description: "Find workspace symbols",
+          responses: {
+            200: {
+              description: "Symbols",
+              content: {
+                "application/json": {
+                  schema: resolver(z.unknown().array()),
+                },
+              },
+            },
+          },
+        }),
+        zValidator(
+          "query",
+          z.object({
+            query: z.string(),
+          }),
+        ),
+        async (c) => {
+          const query = c.req.valid("query").query
+          const result = await LSP.workspaceSymbol(query)
+          return c.json(result)
+        },
+      )
+      .get(
+        "/file",
+        describeRoute({
+          description: "Read a file",
+          responses: {
+            200: {
+              description: "File content",
+              content: {
+                "application/json": {
+                  schema: resolver(
+                    z.object({
+                      type: z.enum(["raw", "patch"]),
+                      content: z.string(),
+                    }),
+                  ),
+                },
+              },
+            },
+          },
+        }),
+        zValidator(
+          "query",
+          z.object({
+            path: z.string(),
+          }),
+        ),
+        async (c) => {
+          const path = c.req.valid("query").path
+          const content = await File.read(path)
+          log.info("read file", {
+            path,
+            content: content.content,
+          })
+          return c.json(content)
+        },
+      )
+      .get(
+        "/file/status",
+        describeRoute({
+          description: "Get file status",
+          responses: {
+            200: {
+              description: "File status",
+              content: {
+                "application/json": {
+                  schema: resolver(
+                    z
+                      .object({
+                        file: z.string(),
+                        added: z.number().int(),
+                        removed: z.number().int(),
+                        status: z.enum(["added", "deleted", "modified"]),
+                      })
+                      .array(),
+                  ),
+                },
+              },
+            },
+          },
+        }),
+        async (c) => {
+          const content = await File.status()
+          return c.json(content)
+        },
+      )
+
+    return result
+  }
+
+  export async function openapi() {
+    const a = app()
+    const result = await generateSpecs(a, {
+      documentation: {
+        info: {
+          title: "opencode",
+          version: "1.0.0",
+          description: "opencode api",
+        },
+        openapi: "3.0.0",
+      },
+    })
+    return result
+  }
+
+  export function listen(opts: { port: number; hostname: string }) {
+    const server = Bun.serve({
+      port: opts.port,
+      hostname: opts.hostname,
+      idleTimeout: 0,
+      fetch: app().fetch,
+    })
+    return server
+  }
+}

packages/opencode/src/session/index.ts

@@ -0,0 +1,923 @@
+import path from "path"
+import { Decimal } from "decimal.js"
+import { z, ZodSchema } from "zod"
+import {
+  generateText,
+  LoadAPIKeyError,
+  streamText,
+  tool,
+  wrapLanguageModel,
+  type Tool as AITool,
+  type LanguageModelUsage,
+  type ProviderMetadata,
+  type ModelMessage,
+  stepCountIs,
+} from "ai"
+
+import PROMPT_INITIALIZE from "../session/prompt/initialize.txt"
+
+import { App } from "../app/app"
+import { Bus } from "../bus"
+import { Config } from "../config/config"
+import { Flag } from "../flag/flag"
+import { Identifier } from "../id/id"
+import { Installation } from "../installation"
+import { MCP } from "../mcp"
+import { Provider } from "../provider/provider"
+import { ProviderTransform } from "../provider/transform"
+import type { ModelsDev } from "../provider/models"
+import { Share } from "../share/share"
+import { Snapshot } from "../snapshot"
+import { Storage } from "../storage/storage"
+import type { Tool } from "../tool/tool"
+import { Log } from "../util/log"
+import { NamedError } from "../util/error"
+import { SystemPrompt } from "./system"
+import { FileTime } from "../file/time"
+import { MessageV2 } from "./message-v2"
+
+export namespace Session {
+  const log = Log.create({ service: "session" })
+
+  export const Info = z
+    .object({
+      id: Identifier.schema("session"),
+      parentID: Identifier.schema("session").optional(),
+      share: z
+        .object({
+          url: z.string(),
+        })
+        .optional(),
+      title: z.string(),
+      version: z.string(),
+      time: z.object({
+        created: z.number(),
+        updated: z.number(),
+      }),
+      revert: z
+        .object({
+          messageID: z.string(),
+          part: z.number(),
+          snapshot: z.string().optional(),
+        })
+        .optional(),
+    })
+    .openapi({
+      ref: "Session",
+    })
+  export type Info = z.output<typeof Info>
+
+  export const ShareInfo = z
+    .object({
+      secret: z.string(),
+      url: z.string(),
+    })
+    .openapi({
+      ref: "SessionShare",
+    })
+  export type ShareInfo = z.output<typeof ShareInfo>
+
+  export const Event = {
+    Updated: Bus.event(
+      "session.updated",
+      z.object({
+        info: Info,
+      }),
+    ),
+    Deleted: Bus.event(
+      "session.deleted",
+      z.object({
+        info: Info,
+      }),
+    ),
+    Idle: Bus.event(
+      "session.idle",
+      z.object({
+        sessionID: z.string(),
+      }),
+    ),
+    Error: Bus.event(
+      "session.error",
+      z.object({
+        error: MessageV2.Assistant.shape.error,
+      }),
+    ),
+  }
+
+  const state = App.state(
+    "session",
+    () => {
+      const sessions = new Map<string, Info>()
+      const messages = new Map<string, MessageV2.Info[]>()
+      const pending = new Map<string, AbortController>()
+
+      return {
+        sessions,
+        messages,
+        pending,
+      }
+    },
+    async (state) => {
+      for (const [_, controller] of state.pending) {
+        controller.abort()
+      }
+    },
+  )
+
+  export async function create(parentID?: string) {
+    const result: Info = {
+      id: Identifier.descending("session"),
+      version: Installation.VERSION,
+      parentID,
+      title: (parentID ? "Child session - " : "New Session - ") + new Date().toISOString(),
+      time: {
+        created: Date.now(),
+        updated: Date.now(),
+      },
+    }
+    log.info("created", result)
+    state().sessions.set(result.id, result)
+    await Storage.writeJSON("session/info/" + result.id, result)
+    const cfg = await Config.get()
+    if (!result.parentID && (Flag.OPENCODE_AUTO_SHARE || cfg.autoshare))
+      share(result.id).then((share) => {
+        update(result.id, (draft) => {
+          draft.share = share
+        })
+      })
+    Bus.publish(Event.Updated, {
+      info: result,
+    })
+    return result
+  }
+
+  export async function get(id: string) {
+    const result = state().sessions.get(id)
+    if (result) {
+      return result
+    }
+    const read = await Storage.readJSON<Info>("session/info/" + id)
+    state().sessions.set(id, read)
+    return read as Info
+  }
+
+  export async function getShare(id: string) {
+    return Storage.readJSON<ShareInfo>("session/share/" + id)
+  }
+
+  export async function share(id: string) {
+    const session = await get(id)
+    if (session.share) return session.share
+    const share = await Share.create(id)
+    await update(id, (draft) => {
+      draft.share = {
+        url: share.url,
+      }
+    })
+    await Storage.writeJSON<ShareInfo>("session/share/" + id, share)
+    await Share.sync("session/info/" + id, session)
+    for (const msg of await messages(id)) {
+      await Share.sync("session/message/" + id + "/" + msg.id, msg)
+    }
+    return share
+  }
+
+  export async function unshare(id: string) {
+    const share = await getShare(id)
+    if (!share) return
+    await Storage.remove("session/share/" + id)
+    await update(id, (draft) => {
+      draft.share = undefined
+    })
+    await Share.remove(id, share.secret)
+  }
+
+  export async function update(id: string, editor: (session: Info) => void) {
+    const { sessions } = state()
+    const session = await get(id)
+    if (!session) return
+    editor(session)
+    session.time.updated = Date.now()
+    sessions.set(id, session)
+    await Storage.writeJSON("session/info/" + id, session)
+    Bus.publish(Event.Updated, {
+      info: session,
+    })
+    return session
+  }
+
+  export async function messages(sessionID: string) {
+    const result = [] as MessageV2.Info[]
+    const list = Storage.list("session/message/" + sessionID)
+    for await (const p of list) {
+      const read = await Storage.readJSON<MessageV2.Info>(p)
+      result.push(read)
+    }
+    result.sort((a, b) => (a.id > b.id ? 1 : -1))
+    return result
+  }
+
+  export async function getMessage(sessionID: string, messageID: string) {
+    return Storage.readJSON<MessageV2.Info>("session/message/" + sessionID + "/" + messageID)
+  }
+
+  export async function* list() {
+    for await (const item of Storage.list("session/info")) {
+      const sessionID = path.basename(item, ".json")
+      yield get(sessionID)
+    }
+  }
+
+  export async function children(parentID: string) {
+    const result = [] as Session.Info[]
+    for await (const item of Storage.list("session/info")) {
+      const sessionID = path.basename(item, ".json")
+      const session = await get(sessionID)
+      if (session.parentID !== parentID) continue
+      result.push(session)
+    }
+    return result
+  }
+
+  export function abort(sessionID: string) {
+    const controller = state().pending.get(sessionID)
+    if (!controller) return false
+    controller.abort()
+    state().pending.delete(sessionID)
+    return true
+  }
+
+  export async function remove(sessionID: string, emitEvent = true) {
+    try {
+      abort(sessionID)
+      const session = await get(sessionID)
+      for (const child of await children(sessionID)) {
+        await remove(child.id, false)
+      }
+      await unshare(sessionID).catch(() => {})
+      await Storage.remove(`session/info/${sessionID}`).catch(() => {})
+      await Storage.removeDir(`session/message/${sessionID}/`).catch(() => {})
+      state().sessions.delete(sessionID)
+      state().messages.delete(sessionID)
+      if (emitEvent) {
+        Bus.publish(Event.Deleted, {
+          info: session,
+        })
+      }
+    } catch (e) {
+      log.error(e)
+    }
+  }
+
+  async function updateMessage(msg: MessageV2.Info) {
+    await Storage.writeJSON("session/message/" + msg.sessionID + "/" + msg.id, msg)
+    Bus.publish(MessageV2.Event.Updated, {
+      info: msg,
+    })
+  }
+
+  export async function chat(input: {
+    sessionID: string
+    providerID: string
+    modelID: string
+    parts: MessageV2.UserPart[]
+    system?: string[]
+    tools?: Tool.Info[]
+  }) {
+    using abort = lock(input.sessionID)
+    const l = log.clone().tag("session", input.sessionID)
+    l.info("chatting")
+    const model = await Provider.getModel(input.providerID, input.modelID)
+    let msgs = await messages(input.sessionID)
+    const session = await get(input.sessionID)
+
+    if (session.revert) {
+      const trimmed = []
+      for (const msg of msgs) {
+        if (msg.id > session.revert.messageID || (msg.id === session.revert.messageID && session.revert.part === 0)) {
+          await Storage.remove("session/message/" + input.sessionID + "/" + msg.id)
+          await Bus.publish(MessageV2.Event.Removed, {
+            sessionID: input.sessionID,
+            messageID: msg.id,
+          })
+          continue
+        }
+
+        if (msg.id === session.revert.messageID) {
+          if (session.revert.part === 0) break
+          msg.parts = msg.parts.slice(0, session.revert.part)
+        }
+        trimmed.push(msg)
+      }
+      msgs = trimmed
+      await update(input.sessionID, (draft) => {
+        draft.revert = undefined
+      })
+    }
+
+    const previous = msgs.at(-1) as MessageV2.Assistant
+
+    // auto summarize if too long
+    if (previous) {
+      const tokens =
+        previous.tokens.input + previous.tokens.cache.read + previous.tokens.cache.write + previous.tokens.output
+      if (
+        model.info.limit.context &&
+        tokens > Math.max((model.info.limit.context - (model.info.limit.output ?? 0)) * 0.9, 0)
+      ) {
+        await summarize({
+          sessionID: input.sessionID,
+          providerID: input.providerID,
+          modelID: input.modelID,
+        })
+        return chat(input)
+      }
+    }
+
+    const lastSummary = msgs.findLast((msg) => msg.role === "assistant" && msg.summary === true)
+    if (lastSummary) msgs = msgs.filter((msg) => msg.id >= lastSummary.id)
+
+    const app = App.info()
+    input.parts = await Promise.all(
+      input.parts.map(async (part): Promise<MessageV2.UserPart[]> => {
+        if (part.type === "file") {
+          const url = new URL(part.url)
+          switch (url.protocol) {
+            case "file:":
+              const filepath = path.join(app.path.cwd, url.pathname)
+              let file = Bun.file(filepath)
+
+              if (part.mime === "text/plain") {
+                let text = await file.text()
+                const range = {
+                  start: url.searchParams.get("start"),
+                  end: url.searchParams.get("end"),
+                }
+                if (range.start != null && part.mime === "text/plain") {
+                  const lines = text.split("\n")
+                  const start = parseInt(range.start)
+                  const end = range.end ? parseInt(range.end) : lines.length
+                  text = lines.slice(start, end).join("\n")
+                }
+                FileTime.read(input.sessionID, filepath)
+                return [
+                  {
+                    type: "text",
+                    text: ["Called the Read tool on " + url.pathname, "<results>", text, "</results>"].join("\n"),
+                  },
+                ]
+              }
+
+              return [
+                {
+                  type: "text",
+                  text: ["Called the Read tool on " + url.pathname].join("\n"),
+                },
+                {
+                  type: "file",
+                  url: `data:${part.mime};base64,` + Buffer.from(await file.bytes()).toString("base64url"),
+                  mime: part.mime,
+                  filename: part.filename!,
+                },
+              ]
+          }
+        }
+        return [part]
+      }),
+    ).then((x) => x.flat())
+    if (msgs.length === 0 && !session.parentID) {
+      generateText({
+        maxOutputTokens: input.providerID === "google" ? 1024 : 20,
+        providerOptions: model.info.options,
+        messages: [
+          ...SystemPrompt.title(input.providerID).map(
+            (x): ModelMessage => ({
+              role: "system",
+              content: x,
+            }),
+          ),
+          ...MessageV2.toModelMessage([
+            {
+              id: Identifier.ascending("message"),
+              role: "user",
+              sessionID: input.sessionID,
+              parts: input.parts,
+              time: {
+                created: Date.now(),
+              },
+            },
+          ]),
+        ],
+        model: model.language,
+      })
+        .then((result) => {
+          if (result.text)
+            return Session.update(input.sessionID, (draft) => {
+              draft.title = result.text
+            })
+        })
+        .catch(() => {})
+    }
+    const msg: MessageV2.Info = {
+      id: Identifier.ascending("message"),
+      role: "user",
+      sessionID: input.sessionID,
+      parts: input.parts,
+      time: {
+        created: Date.now(),
+      },
+    }
+    await updateMessage(msg)
+    msgs.push(msg)
+
+    const system = input.system ?? SystemPrompt.provider(input.providerID)
+    system.push(...(await SystemPrompt.environment()))
+    system.push(...(await SystemPrompt.custom()))
+
+    const next: MessageV2.Info = {
+      id: Identifier.ascending("message"),
+      role: "assistant",
+      parts: [],
+      system,
+      path: {
+        cwd: app.path.cwd,
+        root: app.path.root,
+      },
+      cost: 0,
+      tokens: {
+        input: 0,
+        output: 0,
+        reasoning: 0,
+        cache: { read: 0, write: 0 },
+      },
+      modelID: input.modelID,
+      providerID: input.providerID,
+      time: {
+        created: Date.now(),
+      },
+      sessionID: input.sessionID,
+    }
+    await updateMessage(next)
+    const tools: Record<string, AITool> = {}
+
+    for (const item of await Provider.tools(input.providerID)) {
+      tools[item.id.replaceAll(".", "_")] = tool({
+        id: item.id as any,
+        description: item.description,
+        inputSchema: item.parameters as ZodSchema,
+        async execute(args, opts) {
+          const result = await item.execute(args, {
+            sessionID: input.sessionID,
+            abort: abort.signal,
+            messageID: next.id,
+            metadata: async (val) => {
+              const match = next.parts.find(
+                (p): p is MessageV2.ToolPart => p.type === "tool" && p.id === opts.toolCallId,
+              )
+              if (match && match.state.status === "running") {
+                match.state.title = val.title
+                match.state.metadata = val.metadata
+              }
+              await updateMessage(next)
+            },
+          })
+          return result
+        },
+        toModelOutput(result) {
+          return {
+            type: "text",
+            value: result.output,
+          }
+        },
+      })
+    }
+
+    for (const [key, item] of Object.entries(await MCP.tools())) {
+      const execute = item.execute
+      if (!execute) continue
+      item.execute = async (args, opts) => {
+        const result = await execute(args, opts)
+        const output = result.content
+          .filter((x: any) => x.type === "text")
+          .map((x: any) => x.text)
+          .join("\n\n")
+
+        return {
+          output,
+        }
+      }
+      item.toModelOutput = (result) => {
+        return {
+          type: "text",
+          value: result.output,
+        }
+      }
+      tools[key] = item
+    }
+
+    let text: MessageV2.TextPart = {
+      type: "text",
+      text: "",
+    }
+    const result = streamText({
+      onError() {},
+      maxRetries: 10,
+      maxOutputTokens: Math.max(0, model.info.limit.output) || undefined,
+      abortSignal: abort.signal,
+      stopWhen: stepCountIs(1000),
+      providerOptions: model.info.options,
+      messages: [
+        ...system.map(
+          (x): ModelMessage => ({
+            role: "system",
+            content: x,
+          }),
+        ),
+        ...MessageV2.toModelMessage(msgs),
+      ],
+      temperature: model.info.temperature ? 0 : undefined,
+      tools: model.info.tool_call === false ? undefined : tools,
+      model: wrapLanguageModel({
+        model: model.language,
+        middleware: [
+          {
+            async transformParams(args) {
+              if (args.type === "stream") {
+                // @ts-expect-error
+                args.params.prompt = ProviderTransform.message(args.params.prompt, input.providerID, input.modelID)
+              }
+              return args.params
+            },
+          },
+        ],
+      }),
+    })
+    for await (const value of result.fullStream) {
+      l.info("part", {
+        type: value.type,
+      })
+      switch (value.type) {
+        case "start":
+          break
+
+        case "tool-input-start":
+          next.parts.push({
+            type: "tool",
+            tool: value.toolName,
+            id: value.id,
+            state: {
+              status: "pending",
+            },
+          })
+          Bus.publish(MessageV2.Event.PartUpdated, {
+            part: next.parts[next.parts.length - 1],
+            sessionID: next.sessionID,
+            messageID: next.id,
+          })
+          break
+
+        case "tool-input-delta":
+          break
+
+        case "tool-call": {
+          const match = next.parts.find((p): p is MessageV2.ToolPart => p.type === "tool" && p.id === value.toolCallId)
+          if (match) {
+            match.state = {
+              status: "running",
+              input: value.input,
+              time: {
+                start: Date.now(),
+              },
+            }
+            Bus.publish(MessageV2.Event.PartUpdated, {
+              part: match,
+              sessionID: next.sessionID,
+              messageID: next.id,
+            })
+          }
+          break
+        }
+        case "tool-result": {
+          const match = next.parts.find((p): p is MessageV2.ToolPart => p.type === "tool" && p.id === value.toolCallId)
+          if (match && match.state.status === "running") {
+            match.state = {
+              status: "completed",
+              input: value.input,
+              output: value.output.output,
+              metadata: value.output.metadata,
+              title: value.output.title,
+              time: {
+                start: match.state.time.start,
+                end: Date.now(),
+              },
+            }
+            Bus.publish(MessageV2.Event.PartUpdated, {
+              part: match,
+              sessionID: next.sessionID,
+              messageID: next.id,
+            })
+          }
+          break
+        }
+
+        case "tool-error": {
+          const match = next.parts.find((p): p is MessageV2.ToolPart => p.type === "tool" && p.id === value.toolCallId)
+          if (match && match.state.status === "running") {
+            match.state = {
+              status: "error",
+              input: value.input,
+              error: (value.error as any).toString(),
+              time: {
+                start: match.state.time.start,
+                end: Date.now(),
+              },
+            }
+            Bus.publish(MessageV2.Event.PartUpdated, {
+              part: match,
+              sessionID: next.sessionID,
+              messageID: next.id,
+            })
+          }
+          break
+        }
+
+        case "error":
+          const e = value.error
+          log.error("", {
+            error: e,
+          })
+          switch (true) {
+            case MessageV2.OutputLengthError.isInstance(e):
+              next.error = e
+              break
+            case LoadAPIKeyError.isInstance(e):
+              next.error = new Provider.AuthError(
+                {
+                  providerID: input.providerID,
+                  message: e.message,
+                },
+                { cause: e },
+              ).toObject()
+              break
+            case e instanceof Error:
+              next.error = new NamedError.Unknown({ message: e.toString() }, { cause: e }).toObject()
+              break
+            default:
+              next.error = new NamedError.Unknown({ message: JSON.stringify(e) }, { cause: e })
+          }
+          Bus.publish(Event.Error, {
+            error: next.error,
+          })
+          break
+
+        case "start-step":
+          next.parts.push({
+            type: "step-start",
+          })
+          break
+
+        case "finish-step":
+          const usage = getUsage(model.info, value.usage, value.providerMetadata)
+          next.cost += usage.cost
+          next.tokens = usage.tokens
+          break
+
+        case "text-start":
+          text = {
+            type: "text",
+            text: "",
+          }
+          break
+
+        case "text":
+          if (text.text === "") next.parts.push(text)
+          text.text += value.text
+          break
+
+        case "text-end":
+          Bus.publish(MessageV2.Event.PartUpdated, {
+            part: text,
+            sessionID: next.sessionID,
+            messageID: next.id,
+          })
+          break
+
+        case "finish":
+          next.time.completed = Date.now()
+          break
+
+        default:
+          l.info("unhandled", {
+            ...value,
+          })
+          continue
+      }
+      await updateMessage(next)
+    }
+    next.time.completed = Date.now()
+    await updateMessage(next)
+    return next
+  }
+
+  export async function revert(_input: { sessionID: string; messageID: string; part: number }) {
+    // TODO
+    /*
+    const message = await getMessage(input.sessionID, input.messageID)
+    if (!message) return
+    const part = message.parts[input.part]
+    if (!part) return
+    const session = await get(input.sessionID)
+    const snapshot =
+      session.revert?.snapshot ?? (await Snapshot.create(input.sessionID))
+    const old = (() => {
+      if (message.role === "assistant") {
+        const lastTool = message.parts.findLast(
+          (part, index) =>
+            part.type === "tool-invocation" && index < input.part,
+        )
+        if (lastTool && lastTool.type === "tool-invocation")
+          return message.metadata.tool[lastTool.toolInvocation.toolCallId]
+            .snapshot
+      }
+      return message.metadata.snapshot
+    })()
+    if (old) await Snapshot.restore(input.sessionID, old)
+    await update(input.sessionID, (draft) => {
+      draft.revert = {
+        messageID: input.messageID,
+        part: input.part,
+        snapshot,
+      }
+    })
+    */
+  }
+
+  export async function unrevert(sessionID: string) {
+    const session = await get(sessionID)
+    if (!session) return
+    if (!session.revert) return
+    if (session.revert.snapshot) await Snapshot.restore(sessionID, session.revert.snapshot)
+    update(sessionID, (draft) => {
+      draft.revert = undefined
+    })
+  }
+
+  export async function summarize(input: { sessionID: string; providerID: string; modelID: string }) {
+    using abort = lock(input.sessionID)
+    const msgs = await messages(input.sessionID)
+    const lastSummary = msgs.findLast((msg) => msg.role === "assistant" && msg.summary === true)?.id
+    const filtered = msgs.filter((msg) => !lastSummary || msg.id >= lastSummary)
+    const model = await Provider.getModel(input.providerID, input.modelID)
+    const app = App.info()
+    const system = SystemPrompt.summarize(input.providerID)
+
+    const next: MessageV2.Info = {
+      id: Identifier.ascending("message"),
+      role: "assistant",
+      parts: [],
+      sessionID: input.sessionID,
+      system,
+      path: {
+        cwd: app.path.cwd,
+        root: app.path.root,
+      },
+      summary: true,
+      cost: 0,
+      modelID: input.modelID,
+      providerID: input.providerID,
+      tokens: {
+        input: 0,
+        output: 0,
+        reasoning: 0,
+        cache: { read: 0, write: 0 },
+      },
+      time: {
+        created: Date.now(),
+      },
+    }
+    await updateMessage(next)
+
+    let text: MessageV2.TextPart | undefined
+    const result = streamText({
+      abortSignal: abort.signal,
+      model: model.language,
+      messages: [
+        ...system.map(
+          (x): ModelMessage => ({
+            role: "system",
+            content: x,
+          }),
+        ),
+        ...MessageV2.toModelMessage(filtered),
+        {
+          role: "user",
+          content: [
+            {
+              type: "text",
+              text: "Provide a detailed but concise summary of our conversation above. Focus on information that would be helpful for continuing the conversation, including what we did, what we're doing, which files we're working on, and what we're going to do next.",
+            },
+          ],
+        },
+      ],
+      onStepFinish: async (step) => {
+        const usage = getUsage(model.info, step.usage, step.providerMetadata)
+        next.cost += usage.cost
+        next.tokens = usage.tokens
+        await updateMessage(next)
+        if (text) {
+          Bus.publish(MessageV2.Event.PartUpdated, {
+            part: text,
+            messageID: next.id,
+            sessionID: next.sessionID,
+          })
+        }
+        text = undefined
+      },
+      async onFinish(input) {
+        const usage = getUsage(model.info, input.usage, input.providerMetadata)
+        next.cost += usage.cost
+        next.tokens = usage.tokens
+        next.time.completed = Date.now()
+        await updateMessage(next)
+      },
+    })
+
+    for await (const value of result.fullStream) {
+      switch (value.type) {
+        case "text":
+          if (!text) {
+            text = {
+              type: "text",
+              text: value.text,
+            }
+            next.parts.push(text)
+          } else text.text += value.text
+          await updateMessage(next)
+          break
+      }
+    }
+  }
+
+  function lock(sessionID: string) {
+    log.info("locking", { sessionID })
+    if (state().pending.has(sessionID)) throw new BusyError(sessionID)
+    const controller = new AbortController()
+    state().pending.set(sessionID, controller)
+    return {
+      signal: controller.signal,
+      [Symbol.dispose]() {
+        log.info("unlocking", { sessionID })
+        state().pending.delete(sessionID)
+        Bus.publish(Event.Idle, {
+          sessionID,
+        })
+      },
+    }
+  }
+
+  function getUsage(model: ModelsDev.Model, usage: LanguageModelUsage, metadata?: ProviderMetadata) {
+    const tokens = {
+      input: usage.inputTokens ?? 0,
+      output: usage.outputTokens ?? 0,
+      reasoning: 0,
+      cache: {
+        write: (metadata?.["anthropic"]?.["cacheCreationInputTokens"] ??
+          // @ts-expect-error
+          metadata?.["bedrock"]?.["usage"]?.["cacheWriteInputTokens"] ??
+          0) as number,
+        read: usage.cachedInputTokens ?? 0,
+      },
+    }
+    return {
+      cost: new Decimal(0)
+        .add(new Decimal(tokens.input).mul(model.cost.input).div(1_000_000))
+        .add(new Decimal(tokens.output).mul(model.cost.output).div(1_000_000))
+        .add(new Decimal(tokens.cache.read).mul(model.cost.cache_read ?? 0).div(1_000_000))
+        .add(new Decimal(tokens.cache.write).mul(model.cost.cache_write ?? 0).div(1_000_000))
+        .toNumber(),
+      tokens,
+    }
+  }
+
+  export class BusyError extends Error {
+    constructor(public readonly sessionID: string) {
+      super(`Session ${sessionID} is busy`)
+    }
+  }
+
+  export async function initialize(input: { sessionID: string; modelID: string; providerID: string }) {
+    const app = App.info()
+    await Session.chat({
+      sessionID: input.sessionID,
+      providerID: input.providerID,
+      modelID: input.modelID,
+      parts: [
+        {
+          type: "text",
+          text: PROMPT_INITIALIZE.replace("${path}", app.path.root),
+        },
+      ],
+    })
+    await App.initialize()
+  }
+}

packages/opencode/src/session/message-v2.ts

@@ -0,0 +1,398 @@
+import z from "zod"
+import { Bus } from "../bus"
+import { Provider } from "../provider/provider"
+import { NamedError } from "../util/error"
+import { Message } from "./message"
+import { convertToModelMessages, type ModelMessage, type UIMessage } from "ai"
+
+export namespace MessageV2 {
+  export const OutputLengthError = NamedError.create("MessageOutputLengthError", z.object({}))
+
+  export const ToolStatePending = z
+    .object({
+      status: z.literal("pending"),
+    })
+    .openapi({
+      ref: "ToolStatePending",
+    })
+
+  export type ToolStatePending = z.infer<typeof ToolStatePending>
+
+  export const ToolStateRunning = z
+    .object({
+      status: z.literal("running"),
+      input: z.any(),
+      title: z.string().optional(),
+      metadata: z.record(z.any()).optional(),
+      time: z.object({
+        start: z.number(),
+      }),
+    })
+    .openapi({
+      ref: "ToolStateRunning",
+    })
+  export type ToolStateRunning = z.infer<typeof ToolStateRunning>
+
+  export const ToolStateCompleted = z
+    .object({
+      status: z.literal("completed"),
+      input: z.record(z.any()),
+      output: z.string(),
+      title: z.string(),
+      metadata: z.record(z.any()),
+      time: z.object({
+        start: z.number(),
+        end: z.number(),
+      }),
+    })
+    .openapi({
+      ref: "ToolStateCompleted",
+    })
+  export type ToolStateCompleted = z.infer<typeof ToolStateCompleted>
+
+  export const ToolStateError = z
+    .object({
+      status: z.literal("error"),
+      input: z.record(z.any()),
+      error: z.string(),
+      time: z.object({
+        start: z.number(),
+        end: z.number(),
+      }),
+    })
+    .openapi({
+      ref: "ToolStateError",
+    })
+  export type ToolStateError = z.infer<typeof ToolStateError>
+
+  export const ToolState = z
+    .discriminatedUnion("status", [ToolStatePending, ToolStateRunning, ToolStateCompleted, ToolStateError])
+    .openapi({
+      ref: "ToolState",
+    })
+
+  export const TextPart = z
+    .object({
+      type: z.literal("text"),
+      text: z.string(),
+    })
+    .openapi({
+      ref: "TextPart",
+    })
+  export type TextPart = z.infer<typeof TextPart>
+
+  export const ToolPart = z
+    .object({
+      type: z.literal("tool"),
+      id: z.string(),
+      tool: z.string(),
+      state: ToolState,
+    })
+    .openapi({
+      ref: "ToolPart",
+    })
+  export type ToolPart = z.infer<typeof ToolPart>
+
+  export const FilePart = z
+    .object({
+      type: z.literal("file"),
+      mime: z.string(),
+      filename: z.string().optional(),
+      url: z.string(),
+    })
+    .openapi({
+      ref: "FilePart",
+    })
+  export type FilePart = z.infer<typeof FilePart>
+
+  export const StepStartPart = z
+    .object({
+      type: z.literal("step-start"),
+    })
+    .openapi({
+      ref: "StepStartPart",
+    })
+  export type StepStartPart = z.infer<typeof StepStartPart>
+
+  const Base = z.object({
+    id: z.string(),
+    sessionID: z.string(),
+  })
+
+  export const UserPart = z.discriminatedUnion("type", [TextPart, FilePart]).openapi({
+    ref: "UserMessagePart",
+  })
+  export type UserPart = z.infer<typeof UserPart>
+
+  export const User = Base.extend({
+    role: z.literal("user"),
+    parts: z.array(UserPart),
+    time: z.object({
+      created: z.number(),
+    }),
+  }).openapi({
+    ref: "UserMessage",
+  })
+  export type User = z.infer<typeof User>
+
+  export const AssistantPart = z.discriminatedUnion("type", [TextPart, ToolPart, StepStartPart]).openapi({
+    ref: "AssistantMessagePart",
+  })
+  export type AssistantPart = z.infer<typeof AssistantPart>
+
+  export const Assistant = Base.extend({
+    role: z.literal("assistant"),
+    parts: z.array(AssistantPart),
+    time: z.object({
+      created: z.number(),
+      completed: z.number().optional(),
+    }),
+    error: z
+      .discriminatedUnion("name", [Provider.AuthError.Schema, NamedError.Unknown.Schema, OutputLengthError.Schema])
+      .optional(),
+    system: z.string().array(),
+    modelID: z.string(),
+    providerID: z.string(),
+    path: z.object({
+      cwd: z.string(),
+      root: z.string(),
+    }),
+    cost: z.number(),
+    summary: z.boolean().optional(),
+    tokens: z.object({
+      input: z.number(),
+      output: z.number(),
+      reasoning: z.number(),
+      cache: z.object({
+        read: z.number(),
+        write: z.number(),
+      }),
+    }),
+  }).openapi({
+    ref: "AssistantMessage",
+  })
+  export type Assistant = z.infer<typeof Assistant>
+
+  export const Info = z.discriminatedUnion("role", [User, Assistant]).openapi({
+    ref: "Message",
+  })
+  export type Info = z.infer<typeof Info>
+
+  export const Event = {
+    Updated: Bus.event(
+      "message.updated",
+      z.object({
+        info: Info,
+      }),
+    ),
+    Removed: Bus.event(
+      "message.removed",
+      z.object({
+        sessionID: z.string(),
+        messageID: z.string(),
+      }),
+    ),
+    PartUpdated: Bus.event(
+      "message.part.updated",
+      z.object({
+        part: AssistantPart,
+        sessionID: z.string(),
+        messageID: z.string(),
+      }),
+    ),
+  }
+
+  export function fromV1(v1: Message.Info) {
+    if (v1.role === "assistant") {
+      const result: Assistant = {
+        id: v1.id,
+        sessionID: v1.metadata.sessionID,
+        role: "assistant",
+        time: {
+          created: v1.metadata.time.created,
+          completed: v1.metadata.time.completed,
+        },
+        cost: v1.metadata.assistant!.cost,
+        path: v1.metadata.assistant!.path,
+        summary: v1.metadata.assistant!.summary,
+        tokens: v1.metadata.assistant!.tokens,
+        modelID: v1.metadata.assistant!.modelID,
+        providerID: v1.metadata.assistant!.providerID,
+        system: v1.metadata.assistant!.system,
+        error: v1.metadata.error,
+        parts: v1.parts.flatMap((part): AssistantPart[] => {
+          if (part.type === "text") {
+            return [
+              {
+                type: "text",
+                text: part.text,
+              },
+            ]
+          }
+          if (part.type === "step-start") {
+            return [
+              {
+                type: "step-start",
+              },
+            ]
+          }
+          if (part.type === "tool-invocation") {
+            return [
+              {
+                type: "tool",
+                id: part.toolInvocation.toolCallId,
+                tool: part.toolInvocation.toolName,
+                state: (() => {
+                  if (part.toolInvocation.state === "partial-call") {
+                    return {
+                      status: "pending",
+                    }
+                  }
+
+                  const { title, time, ...metadata } = v1.metadata.tool[part.toolInvocation.toolCallId] ?? {}
+                  if (part.toolInvocation.state === "call") {
+                    return {
+                      status: "running",
+                      input: part.toolInvocation.args,
+                      time: {
+                        start: time?.start,
+                      },
+                    }
+                  }
+
+                  if (part.toolInvocation.state === "result") {
+                    return {
+                      status: "completed",
+                      input: part.toolInvocation.args,
+                      output: part.toolInvocation.result,
+                      title,
+                      time,
+                      metadata,
+                    }
+                  }
+                  throw new Error("unknown tool invocation state")
+                })(),
+              },
+            ]
+          }
+          return []
+        }),
+      }
+      return result
+    }
+
+    if (v1.role === "user") {
+      const result: User = {
+        id: v1.id,
+        sessionID: v1.metadata.sessionID,
+        role: "user",
+        time: {
+          created: v1.metadata.time.created,
+        },
+        parts: v1.parts.flatMap((part): UserPart[] => {
+          if (part.type === "text") {
+            return [
+              {
+                type: "text",
+                text: part.text,
+              },
+            ]
+          }
+          if (part.type === "file") {
+            return [
+              {
+                type: "file",
+                mime: part.mediaType,
+                filename: part.filename,
+                url: part.url,
+              },
+            ]
+          }
+          return []
+        }),
+      }
+      return result
+    }
+  }
+
+  export function toModelMessage(input: Info[]): ModelMessage[] {
+    const result: UIMessage[] = []
+
+    for (const msg of input) {
+      if (msg.parts.length === 0) continue
+      if (msg.role === "user") {
+        result.push({
+          id: msg.id,
+          role: "user",
+          parts: msg.parts.flatMap((part): UIMessage["parts"] => {
+            if (part.type === "text")
+              return [
+                {
+                  type: "text",
+                  text: part.text,
+                },
+              ]
+            if (part.type === "file")
+              return [
+                {
+                  type: "file",
+                  url: part.url,
+                  mediaType: part.mime,
+                  filename: part.filename,
+                },
+              ]
+            return []
+          }),
+        })
+      }
+
+      if (msg.role === "assistant") {
+        result.push({
+          id: msg.id,
+          role: "assistant",
+          parts: msg.parts.flatMap((part): UIMessage["parts"] => {
+            if (part.type === "text")
+              return [
+                {
+                  type: "text",
+                  text: part.text,
+                },
+              ]
+            if (part.type === "step-start")
+              return [
+                {
+                  type: "step-start",
+                },
+              ]
+            if (part.type === "tool") {
+              if (part.state.status === "completed")
+                return [
+                  {
+                    type: ("tool-" + part.tool) as `tool-${string}`,
+                    state: "output-available",
+                    toolCallId: part.id,
+                    input: part.state.input,
+                    output: part.state.output,
+                  },
+                ]
+              if (part.state.status === "error")
+                return [
+                  {
+                    type: ("tool-" + part.tool) as `tool-${string}`,
+                    state: "output-error",
+                    toolCallId: part.id,
+                    input: part.state.input,
+                    errorText: part.state.error,
+                  },
+                ]
+            }
+
+            return []
+          }),
+        })
+      }
+    }
+
+    return convertToModelMessages(result)
+  }
+}

packages/opencode/src/session/message.ts

@@ -0,0 +1,187 @@
+import z from "zod"
+import { Provider } from "../provider/provider"
+import { NamedError } from "../util/error"
+
+export namespace Message {
+  export const OutputLengthError = NamedError.create("MessageOutputLengthError", z.object({}))
+
+  export const ToolCall = z
+    .object({
+      state: z.literal("call"),
+      step: z.number().optional(),
+      toolCallId: z.string(),
+      toolName: z.string(),
+      args: z.custom<Required<unknown>>(),
+    })
+    .openapi({
+      ref: "ToolCall",
+    })
+  export type ToolCall = z.infer<typeof ToolCall>
+
+  export const ToolPartialCall = z
+    .object({
+      state: z.literal("partial-call"),
+      step: z.number().optional(),
+      toolCallId: z.string(),
+      toolName: z.string(),
+      args: z.custom<Required<unknown>>(),
+    })
+    .openapi({
+      ref: "ToolPartialCall",
+    })
+  export type ToolPartialCall = z.infer<typeof ToolPartialCall>
+
+  export const ToolResult = z
+    .object({
+      state: z.literal("result"),
+      step: z.number().optional(),
+      toolCallId: z.string(),
+      toolName: z.string(),
+      args: z.custom<Required<unknown>>(),
+      result: z.string(),
+    })
+    .openapi({
+      ref: "ToolResult",
+    })
+  export type ToolResult = z.infer<typeof ToolResult>
+
+  export const ToolInvocation = z.discriminatedUnion("state", [ToolCall, ToolPartialCall, ToolResult]).openapi({
+    ref: "ToolInvocation",
+  })
+  export type ToolInvocation = z.infer<typeof ToolInvocation>
+
+  export const TextPart = z
+    .object({
+      type: z.literal("text"),
+      text: z.string(),
+    })
+    .openapi({
+      ref: "TextPart",
+    })
+  export type TextPart = z.infer<typeof TextPart>
+
+  export const ReasoningPart = z
+    .object({
+      type: z.literal("reasoning"),
+      text: z.string(),
+      providerMetadata: z.record(z.any()).optional(),
+    })
+    .openapi({
+      ref: "ReasoningPart",
+    })
+  export type ReasoningPart = z.infer<typeof ReasoningPart>
+
+  export const ToolInvocationPart = z
+    .object({
+      type: z.literal("tool-invocation"),
+      toolInvocation: ToolInvocation,
+    })
+    .openapi({
+      ref: "ToolInvocationPart",
+    })
+  export type ToolInvocationPart = z.infer<typeof ToolInvocationPart>
+
+  export const SourceUrlPart = z
+    .object({
+      type: z.literal("source-url"),
+      sourceId: z.string(),
+      url: z.string(),
+      title: z.string().optional(),
+      providerMetadata: z.record(z.any()).optional(),
+    })
+    .openapi({
+      ref: "SourceUrlPart",
+    })
+  export type SourceUrlPart = z.infer<typeof SourceUrlPart>
+
+  export const FilePart = z
+    .object({
+      type: z.literal("file"),
+      mediaType: z.string(),
+      filename: z.string().optional(),
+      url: z.string(),
+    })
+    .openapi({
+      ref: "FilePart",
+    })
+  export type FilePart = z.infer<typeof FilePart>
+
+  export const StepStartPart = z
+    .object({
+      type: z.literal("step-start"),
+    })
+    .openapi({
+      ref: "StepStartPart",
+    })
+  export type StepStartPart = z.infer<typeof StepStartPart>
+
+  export const MessagePart = z
+    .discriminatedUnion("type", [TextPart, ReasoningPart, ToolInvocationPart, SourceUrlPart, FilePart, StepStartPart])
+    .openapi({
+      ref: "MessagePart",
+    })
+  export type MessagePart = z.infer<typeof MessagePart>
+
+  export const Info = z
+    .object({
+      id: z.string(),
+      role: z.enum(["user", "assistant"]),
+      parts: z.array(MessagePart),
+      metadata: z
+        .object({
+          time: z.object({
+            created: z.number(),
+            completed: z.number().optional(),
+          }),
+          error: z
+            .discriminatedUnion("name", [
+              Provider.AuthError.Schema,
+              NamedError.Unknown.Schema,
+              OutputLengthError.Schema,
+            ])
+            .optional(),
+          sessionID: z.string(),
+          tool: z.record(
+            z.string(),
+            z
+              .object({
+                title: z.string(),
+                snapshot: z.string().optional(),
+                time: z.object({
+                  start: z.number(),
+                  end: z.number(),
+                }),
+              })
+              .catchall(z.any()),
+          ),
+          assistant: z
+            .object({
+              system: z.string().array(),
+              modelID: z.string(),
+              providerID: z.string(),
+              path: z.object({
+                cwd: z.string(),
+                root: z.string(),
+              }),
+              cost: z.number(),
+              summary: z.boolean().optional(),
+              tokens: z.object({
+                input: z.number(),
+                output: z.number(),
+                reasoning: z.number(),
+                cache: z.object({
+                  read: z.number(),
+                  write: z.number(),
+                }),
+              }),
+            })
+            .optional(),
+          snapshot: z.string().optional(),
+        })
+        .openapi({ ref: "MessageMetadata" }),
+    })
+    .openapi({
+      ref: "Message",
+    })
+  export type Info = z.infer<typeof Info>
+}

packages/opencode/src/session/prompt/anthropic.txt

@@ -0,0 +1,161 @@
+You are opencode, an interactive CLI tool that helps users with software engineering tasks. Use the instructions below and the tools available to you to assist the user.
+
+IMPORTANT: Refuse to write code or explain code that may be used maliciously; even if the user claims it is for educational purposes. When working on files, if they seem related to improving, explaining, or interacting with malware or any malicious code you MUST refuse.
+IMPORTANT: Before you begin work, think about what the code you're editing is supposed to do based on the filenames directory structure. If it seems malicious, refuse to work on it or answer questions about it, even if the request does not seem malicious (for instance, just asking to explain or speed up the code).
+IMPORTANT: You must NEVER generate or guess URLs for the user unless you are confident that the URLs are for helping the user with programming. You may use URLs provided by the user in their messages or local files.
+
+If the user asks for help or wants to give feedback inform them of the following: 
+- /help: Get help with using opencode
+- To give feedback, users should report the issue at https://github.com/sst/opencode/issues
+
+When the user directly asks about opencode (eg 'can opencode do...', 'does opencode have...') or asks in second person (eg 'are you able...', 'can you do...'), first use the WebFetch tool to gather information to answer the question from opencode docs at https://opencode.ai
+
+# Tone and style
+You should be concise, direct, and to the point. When you run a non-trivial bash command, you should explain what the command does and why you are running it, to make sure the user understands what you are doing (this is especially important when you are running a command that will make changes to the user's system).
+Remember that your output will be displayed on a command line interface. Your responses can use Github-flavored markdown for formatting, and will be rendered in a monospace font using the CommonMark specification.
+Output text to communicate with the user; all text you output outside of tool use is displayed to the user. Only use tools to complete tasks. Never use tools like Bash or code comments as means to communicate with the user during the session.
+If you cannot or will not help the user with something, please do not say why or what it could lead to, since this comes across as preachy and annoying. Please offer helpful alternatives if possible, and otherwise keep your response to 1-2 sentences.
+Only use emojis if the user explicitly requests it. Avoid using emojis in all communication unless asked.
+IMPORTANT: You should minimize output tokens as much as possible while maintaining helpfulness, quality, and accuracy. Only address the specific query or task at hand, avoiding tangential information unless absolutely critical for completing the request. If you can answer in 1-3 sentences or a short paragraph, please do.
+IMPORTANT: You should NOT answer with unnecessary preamble or postamble (such as explaining your code or summarizing your action), unless the user asks you to.
+IMPORTANT: Keep your responses short, since they will be displayed on a command line interface. You MUST answer concisely with fewer than 4 lines (not including tool use or code generation), unless user asks for detail. Answer the user's question directly, without elaboration, explanation, or details. One word answers are best. Avoid introductions, conclusions, and explanations. You MUST avoid text before/after your response, such as "The answer is <answer>.", "Here is the content of the file..." or "Based on the information provided, the answer is..." or "Here is what I will do next...". Here are some examples to demonstrate appropriate verbosity:
+<example>
+user: 2 + 2
+assistant: 4
+</example>
+
+<example>
+user: what is 2+2?
+assistant: 4
+</example>
+
+<example>
+user: is 11 a prime number?
+assistant: Yes
+</example>
+
+<example>
+user: what command should I run to list files in the current directory?
+assistant: ls
+</example>
+
+<example>
+user: what command should I run to watch files in the current directory?
+assistant: [use the ls tool to list the files in the current directory, then read docs/commands in the relevant file to find out how to watch files]
+npm run dev
+</example>
+
+<example>
+user: How many golf balls fit inside a jetta?
+assistant: 150000
+</example>
+
+<example>
+user: what files are in the directory src/?
+assistant: [runs ls and sees foo.c, bar.c, baz.c]
+user: which file contains the implementation of foo?
+assistant: src/foo.c
+</example>
+
+<example>
+user: write tests for new feature
+assistant: [uses grep and glob search tools to find where similar tests are defined, uses concurrent read file tool use blocks in one tool call to read relevant files at the same time, uses edit file tool to write new tests]
+</example>
+
+# Proactiveness
+You are allowed to be proactive, but only when the user asks you to do something. You should strive to strike a balance between:
+1. Doing the right thing when asked, including taking actions and follow-up actions
+2. Not surprising the user with actions you take without asking
+For example, if the user asks you how to approach something, you should do your best to answer their question first, and not immediately jump into taking actions.
+3. Do not add additional code explanation summary unless requested by the user. After working on a file, just stop, rather than providing an explanation of what you did.
+
+# Following conventions
+When making changes to files, first understand the file's code conventions. Mimic code style, use existing libraries and utilities, and follow existing patterns.
+- NEVER assume that a given library is available, even if it is well known. Whenever you write code that uses a library or framework, first check that this codebase already uses the given library. For example, you might look at neighboring files, or check the package.json (or cargo.toml, and so on depending on the language).
+- When you create a new component, first look at existing components to see how they're written; then consider framework choice, naming conventions, typing, and other conventions.
+- When you edit a piece of code, first look at the code's surrounding context (especially its imports) to understand the code's choice of frameworks and libraries. Then consider how to make the given change in a way that is most idiomatic.
+- Always follow security best practices. Never introduce code that exposes or logs secrets and keys. Never commit secrets or keys to the repository.
+
+# Code style
+- IMPORTANT: DO NOT ADD ***ANY*** COMMENTS unless asked
+
+
+# Task Management
+You have access to the TodoWrite and TodoRead tools to help you manage and plan tasks. Use these tools VERY frequently to ensure that you are tracking your tasks and giving the user visibility into your progress.
+These tools are also EXTREMELY helpful for planning tasks, and for breaking down larger complex tasks into smaller steps. If you do not use this tool when planning, you may forget to do important tasks - and that is unacceptable.
+
+It is critical that you mark todos as completed as soon as you are done with a task. Do not batch up multiple tasks before marking them as completed.
+
+Examples:
+
+<example>
+user: Run the build and fix any type errors
+assistant: I'm going to use the TodoWrite tool to write the following items to the todo list: 
+- Run the build
+- Fix any type errors
+
+I'm now going to run the build using Bash.
+
+Looks like I found 10 type errors. I'm going to use the TodoWrite tool to write 10 items to the todo list.
+
+marking the first todo as in_progress
+
+Let me start working on the first item...
+
+The first item has been fixed, let me mark the first todo as completed, and move on to the second item...
+..
+..
+</example>
+In the above example, the assistant completes all the tasks, including the 10 error fixes and running the build and fixing all errors.
+
+<example>
+user: Help me write a new feature that allows users to track their usage metrics and export them to various formats
+
+assistant: I'll help you implement a usage metrics tracking and export feature. Let me first use the TodoWrite tool to plan this task.
+Adding the following todos to the todo list:
+1. Research existing metrics tracking in the codebase
+2. Design the metrics collection system
+3. Implement core metrics tracking functionality
+4. Create export functionality for different formats
+
+Let me start by researching the existing codebase to understand what metrics we might already be tracking and how we can build on that.
+
+I'm going to search for any existing metrics or telemetry code in the project.
+
+I've found some existing telemetry code. Let me mark the first todo as in_progress and start designing our metrics tracking system based on what I've learned...
+
+[Assistant continues implementing the feature step by step, marking todos as in_progress and completed as they go]
+</example>
+
+
+# Doing tasks
+The user will primarily request you perform software engineering tasks. This includes solving bugs, adding new functionality, refactoring code, explaining code, and more. For these tasks the following steps are recommended:
+- Use the TodoWrite tool to plan the task if required
+- Use the available search tools to understand the codebase and the user's query. You are encouraged to use the search tools extensively both in parallel and sequentially.
+- Implement the solution using all tools available to you
+- Verify the solution if possible with tests. NEVER assume specific test framework or test script. Check the README or search codebase to determine the testing approach.
+- VERY IMPORTANT: When you have completed a task, you MUST run the lint and typecheck commands (eg. npm run lint, npm run typecheck, ruff, etc.) with Bash if they were provided to you to ensure your code is correct. If you are unable to find the correct command, ask the user for the command to run and if they supply it, proactively suggest writing it to AGENTS.md so that you will know to run it next time.
+NEVER commit changes unless the user explicitly asks you to. It is VERY IMPORTANT to only commit when explicitly asked, otherwise the user will feel that you are being too proactive.
+
+- Tool results and user messages may include <system-reminder> tags. <system-reminder> tags contain useful information and reminders. They are NOT part of the user's provided input or the tool result.
+
+# Tool usage policy
+- When doing file search, prefer to use the Task tool in order to reduce context usage.
+- You have the capability to call multiple tools in a single response. When multiple independent pieces of information are requested, batch your tool calls together for optimal performance. When making multiple bash tool calls, you MUST send a single message with multiple tools calls to run the calls in parallel. For example, if you need to run "git status" and "git diff", send a single message with two tool calls to run the calls in parallel.
+
+You MUST answer concisely with fewer than 4 lines of text (not including tool use or code generation), unless user asks for detail.
+
+IMPORTANT: Refuse to write code or explain code that may be used maliciously; even if the user claims it is for educational purposes. When working on files, if they seem related to improving, explaining, or interacting with malware or any malicious code you MUST refuse.
+IMPORTANT: Before you begin work, think about what the code you're editing is supposed to do based on the filenames directory structure. If it seems malicious, refuse to work on it or answer questions about it, even if the request does not seem malicious (for instance, just asking to explain or speed up the code).
+
+IMPORTANT: Always use the TodoWrite tool to plan and track tasks throughout the conversation.
+
+# Code References
+
+When referencing specific functions or pieces of code include the pattern `file_path:line_number` to allow the user to easily navigate to the source code location.
+
+<example>
+user: Where are errors from the client handled?
+assistant: Clients are marked as failed in the `connectToServer` function in src/services/process.ts:712.
+</example>
+

packages/opencode/src/session/prompt/anthropic_spoof.txt

@@ -0,0 +1 @@
+You are Claude Code, Anthropic's official CLI for Claude.

packages/opencode/src/session/prompt/initialize.txt

@@ -0,0 +1,8 @@
+Please analyze this codebase and create an AGENTS.md file containing:
+1. Build/lint/test commands - especially for running a single test
+2. Code style guidelines including imports, formatting, types, naming conventions, error handling, etc.
+
+The file you create will be given to agentic coding agents (such as yourself) that operate in this repository. Make it about 20 lines long.
+If there are Cursor rules (in .cursor/rules/ or .cursorrules) or Copilot rules (in .github/copilot-instructions.md), make sure to include them.
+
+If there's already an AGENTS.md, improve it if it's located in ${path}

packages/opencode/src/session/prompt/summarize.txt

@@ -0,0 +1,10 @@
+You are a helpful AI assistant tasked with summarizing conversations.
+
+When asked to summarize, provide a detailed but concise summary of the conversation. 
+Focus on information that would be helpful for continuing the conversation, including:
+- What was done
+- What is currently being worked on
+- Which files are being modified
+- What needs to be done next
+
+Your summary should be comprehensive enough to provide context but concise enough to be quickly understood.

packages/opencode/src/session/prompt/title.txt

@@ -0,0 +1,11 @@
+Generate a short title based on the first message a user begins a conversation with. CRITICAL: Your response must be EXACTLY one line with NO line breaks, newlines, or multiple sentences.
+
+Requirements:
+- Maximum 50 characters
+- Single line only - NO newlines or line breaks
+- Summary of the user's message
+- No quotes, colons, or special formatting
+- Do not include explanatory text like "summary:" or similar
+- Your entire response becomes the title
+
+IMPORTANT: Return only the title text on a single line. Do not add any explanations, formatting, or additional text.

packages/opencode/src/session/system.ts

@@ -0,0 +1,110 @@
+import { App } from "../app/app"
+import { Ripgrep } from "../file/ripgrep"
+import { Global } from "../global"
+import { Filesystem } from "../util/filesystem"
+import { Config } from "../config/config"
+import path from "path"
+import os from "os"
+
+import PROMPT_ANTHROPIC from "./prompt/anthropic.txt"
+import PROMPT_ANTHROPIC_SPOOF from "./prompt/anthropic_spoof.txt"
+import PROMPT_SUMMARIZE from "./prompt/summarize.txt"
+import PROMPT_TITLE from "./prompt/title.txt"
+
+export namespace SystemPrompt {
+  export function provider(providerID: string) {
+    const result = []
+    switch (providerID) {
+      case "anthropic":
+        result.push(PROMPT_ANTHROPIC_SPOOF.trim())
+        result.push(PROMPT_ANTHROPIC)
+        break
+      default:
+        result.push(PROMPT_ANTHROPIC)
+        break
+    }
+    return result
+  }
+
+  export async function environment() {
+    const app = App.info()
+    return [
+      [
+        `Here is some useful information about the environment you are running in:`,
+        `<env>`,
+        `  Working directory: ${app.path.cwd}`,
+        `  Is directory a git repo: ${app.git ? "yes" : "no"}`,
+        `  Platform: ${process.platform}`,
+        `  Today's date: ${new Date().toDateString()}`,
+        `</env>`,
+        `<project>`,
+        `  ${
+          app.git
+            ? await Ripgrep.tree({
+                cwd: app.path.cwd,
+                limit: 200,
+              })
+            : ""
+        }`,
+        `</project>`,
+      ].join("\n"),
+    ]
+  }
+
+  const CUSTOM_FILES = [
+    "AGENTS.md",
+    "CLAUDE.md",
+    "CONTEXT.md", // deprecated
+  ]
+
+  export async function custom() {
+    const { cwd, root } = App.info().path
+    const config = await Config.get()
+    const found = []
+    for (const item of CUSTOM_FILES) {
+      const matches = await Filesystem.findUp(item, cwd, root)
+      found.push(...matches.map((x) => Bun.file(x).text()))
+    }
+    found.push(
+      Bun.file(path.join(Global.Path.config, "AGENTS.md"))
+        .text()
+        .catch(() => ""),
+    )
+    found.push(
+      Bun.file(path.join(os.homedir(), ".claude", "CLAUDE.md"))
+        .text()
+        .catch(() => ""),
+    )
+
+    if (config.instructions) {
+      for (const instruction of config.instructions) {
+        try {
+          const matches = await Filesystem.globUp(instruction, cwd, root)
+          found.push(...matches.map((x) => Bun.file(x).text()))
+        } catch {
+          continue // Skip invalid glob patterns
+        }
+      }
+    }
+
+    return Promise.all(found).then((result) => result.filter(Boolean))
+  }
+
+  export function summarize(providerID: string) {
+    switch (providerID) {
+      case "anthropic":
+        return [PROMPT_ANTHROPIC_SPOOF.trim(), PROMPT_SUMMARIZE]
+      default:
+        return [PROMPT_SUMMARIZE]
+    }
+  }
+
+  export function title(providerID: string) {
+    switch (providerID) {
+      case "anthropic":
+        return [PROMPT_ANTHROPIC_SPOOF.trim(), PROMPT_TITLE]
+      default:
+        return [PROMPT_TITLE]
+    }
+  }
+}

packages/opencode/src/share/share.ts

@@ -0,0 +1,73 @@
+import { Bus } from "../bus"
+import { Installation } from "../installation"
+import { Session } from "../session"
+import { Storage } from "../storage/storage"
+import { Log } from "../util/log"
+
+export namespace Share {
+  const log = Log.create({ service: "share" })
+
+  let queue: Promise<void> = Promise.resolve()
+  const pending = new Map<string, any>()
+
+  export async function sync(key: string, content: any) {
+    const [root, ...splits] = key.split("/")
+    if (root !== "session") return
+    const [sub, sessionID] = splits
+    if (sub === "share") return
+    const share = await Session.getShare(sessionID).catch(() => {})
+    if (!share) return
+    const { secret } = share
+    pending.set(key, content)
+    queue = queue
+      .then(async () => {
+        const content = pending.get(key)
+        if (content === undefined) return
+        pending.delete(key)
+
+        return fetch(`${URL}/share_sync`, {
+          method: "POST",
+          body: JSON.stringify({
+            sessionID: sessionID,
+            secret,
+            key: key,
+            content,
+          }),
+        })
+      })
+      .then((x) => {
+        if (x) {
+          log.info("synced", {
+            key: key,
+            status: x.status,
+          })
+        }
+      })
+  }
+
+  export function init() {
+    Bus.subscribe(Storage.Event.Write, async (payload) => {
+      await sync(payload.properties.key, payload.properties.content)
+    })
+  }
+
+  export const URL =
+    process.env["OPENCODE_API"] ??
+    (Installation.isSnapshot() || Installation.isDev() ? "https://api.dev.opencode.ai" : "https://api.opencode.ai")
+
+  export async function create(sessionID: string) {
+    return fetch(`${URL}/share_create`, {
+      method: "POST",
+      body: JSON.stringify({ sessionID: sessionID }),
+    })
+      .then((x) => x.json())
+      .then((x) => x as { url: string; secret: string })
+  }
+
+  export async function remove(sessionID: string, secret: string) {
+    return fetch(`${URL}/share_delete`, {
+      method: "POST",
+      body: JSON.stringify({ sessionID, secret }),
+    }).then((x) => x.json())
+  }
+}

packages/opencode/src/snapshot/index.ts

@@ -0,0 +1,65 @@
+import { App } from "../app/app"
+import { $ } from "bun"
+import path from "path"
+import fs from "fs/promises"
+import { Ripgrep } from "../file/ripgrep"
+import { Log } from "../util/log"
+
+export namespace Snapshot {
+  const log = Log.create({ service: "snapshot" })
+
+  export async function create(sessionID: string) {
+    return
+    log.info("creating snapshot")
+    const app = App.info()
+    const git = gitdir(sessionID)
+
+    // not a git repo, check if too big to snapshot
+    if (!app.git) {
+      const files = await Ripgrep.files({
+        cwd: app.path.cwd,
+        limit: 1000,
+      })
+      log.info("found files", { count: files.length })
+      if (files.length > 1000) return
+    }
+
+    if (await fs.mkdir(git, { recursive: true })) {
+      await $`git init`
+        .env({
+          ...process.env,
+          GIT_DIR: git,
+          GIT_WORK_TREE: app.path.root,
+        })
+        .quiet()
+        .nothrow()
+      log.info("initialized")
+    }
+
+    await $`git --git-dir ${git} add .`.quiet().cwd(app.path.cwd).nothrow()
+    log.info("added files")
+
+    const result =
+      await $`git --git-dir ${git} commit --allow-empty -m "snapshot" --author="opencode <mail@opencode.ai>"`
+        .quiet()
+        .cwd(app.path.cwd)
+        .nothrow()
+    log.info("commit")
+
+    const match = result.stdout.toString().match(/\[.+ ([a-f0-9]+)\]/)
+    if (!match) return
+    return match![1]
+  }
+
+  export async function restore(sessionID: string, commit: string) {
+    log.info("restore", { commit })
+    const app = App.info()
+    const git = gitdir(sessionID)
+    await $`git --git-dir=${git} checkout ${commit} --force`.quiet().cwd(app.path.root)
+  }
+
+  function gitdir(sessionID: string) {
+    const app = App.info()
+    return path.join(app.path.data, "snapshot", sessionID)
+  }
+}

packages/opencode/src/storage/storage.ts

@@ -0,0 +1,98 @@
+import { Log } from "../util/log"
+import { App } from "../app/app"
+import { Bus } from "../bus"
+import path from "path"
+import z from "zod"
+import fs from "fs/promises"
+import { MessageV2 } from "../session/message-v2"
+
+export namespace Storage {
+  const log = Log.create({ service: "storage" })
+
+  export const Event = {
+    Write: Bus.event("storage.write", z.object({ key: z.string(), content: z.any() })),
+  }
+
+  type Migration = (dir: string) => Promise<void>
+
+  const MIGRATIONS: Migration[] = [
+    async (dir: string) => {
+      const files = new Bun.Glob("session/message/*/*.json").scanSync({
+        cwd: dir,
+        absolute: true,
+      })
+      for (const file of files) {
+        const content = await Bun.file(file).json()
+        if (!content.metadata) continue
+        log.info("migrating to v2 message", { file })
+        try {
+          const result = MessageV2.fromV1(content)
+          await Bun.write(file, JSON.stringify(result, null, 2))
+        } catch (e) {
+          await fs.rename(file, file.replace("storage", "broken"))
+        }
+      }
+    },
+  ]
+
+  const state = App.state("storage", async () => {
+    const app = App.info()
+    const dir = path.join(app.path.data, "storage")
+    const migration = await Bun.file(path.join(dir, "migration"))
+      .json()
+      .then((x) => parseInt(x))
+      .catch(() => 0)
+    for (let index = migration; index < MIGRATIONS.length; index++) {
+      log.info("running migration", { index })
+      const migration = MIGRATIONS[index]
+      await migration(dir)
+      await Bun.write(path.join(dir, "migration"), (index + 1).toString())
+    }
+    return {
+      dir,
+    }
+  })
+
+  export async function remove(key: string) {
+    const dir = await state().then((x) => x.dir)
+    const target = path.join(dir, key + ".json")
+    await fs.unlink(target).catch(() => {})
+  }
+
+  export async function removeDir(key: string) {
+    const dir = await state().then((x) => x.dir)
+    const target = path.join(dir, key)
+    await fs.rm(target, { recursive: true, force: true }).catch(() => {})
+  }
+
+  export async function readJSON<T>(key: string) {
+    const dir = await state().then((x) => x.dir)
+    return Bun.file(path.join(dir, key + ".json")).json() as Promise<T>
+  }
+
+  export async function writeJSON<T>(key: string, content: T) {
+    const dir = await state().then((x) => x.dir)
+    const target = path.join(dir, key + ".json")
+    const tmp = target + Date.now() + ".tmp"
+    await Bun.write(tmp, JSON.stringify(content, null, 2))
+    await fs.rename(tmp, target).catch(() => {})
+    await fs.unlink(tmp).catch(() => {})
+    Bus.publish(Event.Write, { key, content })
+  }
+
+  const glob = new Bun.Glob("**/*")
+  export async function* list(prefix: string) {
+    const dir = await state().then((x) => x.dir)
+    try {
+      for await (const item of glob.scan({
+        cwd: path.join(dir, prefix),
+        onlyFiles: true,
+      })) {
+        const result = path.join(prefix, item.slice(0, -5))
+        yield result
+      }
+    } catch {
+      return
+    }
+  }
+}

packages/opencode/src/tool/bash.ts

@@ -0,0 +1,49 @@
+import { z } from "zod"
+import { Tool } from "./tool"
+import DESCRIPTION from "./bash.txt"
+import { App } from "../app/app"
+
+const MAX_OUTPUT_LENGTH = 30000
+const DEFAULT_TIMEOUT = 1 * 60 * 1000
+const MAX_TIMEOUT = 10 * 60 * 1000
+
+export const BashTool = Tool.define({
+  id: "bash",
+  description: DESCRIPTION,
+  parameters: z.object({
+    command: z.string().describe("The command to execute"),
+    timeout: z.number().min(0).max(MAX_TIMEOUT).describe("Optional timeout in milliseconds").optional(),
+    description: z
+      .string()
+      .describe(
+        "Clear, concise description of what this command does in 5-10 words. Examples:\nInput: ls\nOutput: Lists files in current directory\n\nInput: git status\nOutput: Shows working tree status\n\nInput: npm install\nOutput: Installs package dependencies\n\nInput: mkdir foo\nOutput: Creates directory 'foo'",
+      ),
+  }),
+  async execute(params, ctx) {
+    const timeout = Math.min(params.timeout ?? DEFAULT_TIMEOUT, MAX_TIMEOUT)
+
+    const process = Bun.spawn({
+      cmd: ["bash", "-c", params.command],
+      cwd: App.info().path.cwd,
+      maxBuffer: MAX_OUTPUT_LENGTH,
+      signal: ctx.abort,
+      timeout: timeout,
+      stdout: "pipe",
+      stderr: "pipe",
+    })
+    await process.exited
+    const stdout = await new Response(process.stdout).text()
+    const stderr = await new Response(process.stderr).text()
+
+    return {
+      title: params.command,
+      metadata: {
+        stderr,
+        stdout,
+        exit: process.exitCode,
+        description: params.description,
+      },
+      output: [`<stdout>`, stdout ?? "", `</stdout>`, `<stderr>`, stderr ?? "", `</stderr>`].join("\n"),
+    }
+  },
+})

packages/opencode/src/tool/bash.txt

@@ -0,0 +1,141 @@
+Executes a given bash command in a persistent shell session with optional timeout, ensuring proper handling and security measures.
+
+Before executing the command, please follow these steps:
+
+1. Directory Verification:
+   - If the command will create new directories or files, first use the LS tool to verify the parent directory exists and is the correct location
+   - For example, before running "mkdir foo/bar", first use LS to check that "foo" exists and is the intended parent directory
+
+2. Command Execution:
+   - Always quote file paths that contain spaces with double quotes (e.g., cd "path with spaces/file.txt")
+   - Examples of proper quoting:
+     - cd "/Users/name/My Documents" (correct)
+     - cd /Users/name/My Documents (incorrect - will fail)
+     - python "/path/with spaces/script.py" (correct)
+     - python /path/with spaces/script.py (incorrect - will fail)
+   - After ensuring proper quoting, execute the command.
+   - Capture the output of the command.
+
+Usage notes:
+  - The command argument is required.
+  - You can specify an optional timeout in milliseconds (up to 600000ms / 10 minutes). If not specified, commands will timeout after 120000ms (2 minutes).
+  - It is very helpful if you write a clear, concise description of what this command does in 5-10 words.
+  - If the output exceeds 30000 characters, output will be truncated before being returned to you.
+  - VERY IMPORTANT: You MUST avoid using search commands like `find` and `grep`. Instead use Grep, Glob, or Task to search. You MUST avoid read tools like `cat`, `head`, `tail`, and `ls`, and use Read and LS to read files.
+  - If you _still_ need to run `grep`, STOP. ALWAYS USE ripgrep at `rg` (or /usr/bin/rg) first, which all opencode users have pre-installed.
+  - When issuing multiple commands, use the ';' or '&&' operator to separate them. DO NOT use newlines (newlines are ok in quoted strings).
+  - Try to maintain your current working directory throughout the session by using absolute paths and avoiding usage of `cd`. You may use `cd` if the User explicitly requests it.
+    <good-example>
+    pytest /foo/bar/tests
+    </good-example>
+    <bad-example>
+    cd /foo/bar && pytest tests
+    </bad-example>
+
+
+# Committing changes with git
+
+When the user asks you to create a new git commit, follow these steps carefully:
+
+1. You have the capability to call multiple tools in a single response. When multiple independent pieces of information are requested, batch your tool calls together for optimal performance. ALWAYS run the following bash commands in parallel, each using the Bash tool:
+   - Run a git status command to see all untracked files.
+   - Run a git diff command to see both staged and unstaged changes that will be committed.
+   - Run a git log command to see recent commit messages, so that you can follow this repository's commit message style.
+
+2. Analyze all staged changes (both previously staged and newly added) and draft a commit message. Wrap your analysis process in <commit_analysis> tags:
+
+<commit_analysis>
+- List the files that have been changed or added
+- Summarize the nature of the changes (eg. new feature, enhancement to an existing feature, bug fix, refactoring, test, docs, etc.)
+- Brainstorm the purpose or motivation behind these changes
+- Assess the impact of these changes on the overall project
+- Check for any sensitive information that shouldn't be committed
+- Draft a concise (1-2 sentences) commit message that focuses on the "why" rather than the "what"
+- Ensure your language is clear, concise, and to the point
+- Ensure the message accurately reflects the changes and their purpose (i.e. "add" means a wholly new feature, "update" means an enhancement to an existing feature, "fix" means a bug fix, etc.)
+- Ensure the message is not generic (avoid words like "Update" or "Fix" without context)
+- Review the draft message to ensure it accurately reflects the changes and their purpose
+</commit_analysis>
+
+3. You have the capability to call multiple tools in a single response. When multiple independent pieces of information are requested, batch your tool calls together for optimal performance. ALWAYS run the following commands in parallel:
+   - Add relevant untracked files to the staging area.
+   - Create the commit with a message ending with:
+   🤖 Generated with [opencode](https://opencode.ai)
+
+   Co-Authored-By: opencode <noreply@opencode.ai>
+   - Run git status to make sure the commit succeeded.
+
+4. If the commit fails due to pre-commit hook changes, retry the commit ONCE to include these automated changes. If it fails again, it usually means a pre-commit hook is preventing the commit. If the commit succeeds but you notice that files were modified by the pre-commit hook, you MUST amend your commit to include them.
+
+Important notes:
+- Use the git context at the start of this conversation to determine which files are relevant to your commit. Be careful not to stage and commit files (e.g. with `git add .`) that aren't relevant to your commit.
+- NEVER update the git config
+- DO NOT run additional commands to read or explore code, beyond what is available in the git context
+- DO NOT push to the remote repository
+- IMPORTANT: Never use git commands with the -i flag (like git rebase -i or git add -i) since they require interactive input which is not supported.
+- If there are no changes to commit (i.e., no untracked files and no modifications), do not create an empty commit
+- Ensure your commit message is meaningful and concise. It should explain the purpose of the changes, not just describe them.
+- Return an empty response - the user will see the git output directly
+- In order to ensure good formatting, ALWAYS pass the commit message via a HEREDOC, a la this example:
+<example>
+git commit -m "$(cat <<'EOF'
+   Commit message here.
+
+   🤖 Generated with [opencode](https://opencode.ai)
+
+   Co-Authored-By: opencode <noreply@opencode.ai>
+   EOF
+   )"
+</example>
+
+# Creating pull requests
+Use the gh command via the Bash tool for ALL GitHub-related tasks including working with issues, pull requests, checks, and releases. If given a Github URL use the gh command to get the information needed.
+
+IMPORTANT: When the user asks you to create a pull request, follow these steps carefully:
+
+1. You have the capability to call multiple tools in a single response. When multiple independent pieces of information are requested, batch your tool calls together for optimal performance. ALWAYS run the following bash commands in parallel using the Bash tool, in order to understand the current state of the branch since it diverged from the main branch:
+   - Run a git status command to see all untracked files
+   - Run a git diff command to see both staged and unstaged changes that will be committed
+   - Check if the current branch tracks a remote branch and is up to date with the remote, so you know if you need to push to the remote
+   - Run a git log command and `git diff main...HEAD` to understand the full commit history for the current branch (from the time it diverged from the `main` branch)
+
+2. Analyze all changes that will be included in the pull request, making sure to look at all relevant commits (NOT just the latest commit, but ALL commits that will be included in the pull request!!!), and draft a pull request summary. Wrap your analysis process in <pr_analysis> tags:
+
+<pr_analysis>
+- List the commits since diverging from the main branch
+- Summarize the nature of the changes (eg. new feature, enhancement to an existing feature, bug fix, refactoring, test, docs, etc.)
+- Brainstorm the purpose or motivation behind these changes
+- Assess the impact of these changes on the overall project
+- Do not use tools to explore code, beyond what is available in the git context
+- Check for any sensitive information that shouldn't be committed
+- Draft a concise (1-2 bullet points) pull request summary that focuses on the "why" rather than the "what"
+- Ensure the summary accurately reflects all changes since diverging from the main branch
+- Ensure your language is clear, concise, and to the point
+- Ensure the summary accurately reflects the changes and their purpose (ie. "add" means a wholly new feature, "update" means an enhancement to an existing feature, "fix" means a bug fix, etc.)
+- Ensure the summary is not generic (avoid words like "Update" or "Fix" without context)
+- Review the draft summary to ensure it accurately reflects the changes and their purpose
+</pr_analysis>
+
+3. You have the capability to call multiple tools in a single response. When multiple independent pieces of information are requested, batch your tool calls together for optimal performance. ALWAYS run the following commands in parallel:
+   - Create new branch if needed
+   - Push to remote with -u flag if needed
+   - Create PR using gh pr create with the format below. Use a HEREDOC to pass the body to ensure correct formatting.
+<example>
+gh pr create --title "the pr title" --body "$(cat <<'EOF'
+## Summary
+<1-3 bullet points>
+
+## Test plan
+[Checklist of TODOs for testing the pull request...]
+
+🤖 Generated with [opencode](https://opencode.ai)
+EOF
+)"
+</example>
+
+Important:
+- NEVER update the git config
+- Return the PR URL when you're done, so the user can see it
+
+# Other common operations
+- View comments on a Github PR: gh api repos/foo/bar/pulls/123/comments

packages/opencode/src/tool/edit.ts

@@ -0,0 +1,474 @@
+// the approaches in this edit tool are sourced from
+// https://github.com/cline/cline/blob/main/evals/diff-edits/diff-apply/diff-06-23-25.ts
+// https://github.com/google-gemini/gemini-cli/blob/main/packages/core/src/utils/editCorrector.ts
+
+import { z } from "zod"
+import * as path from "path"
+import { Tool } from "./tool"
+import { LSP } from "../lsp"
+import { createTwoFilesPatch } from "diff"
+import { Permission } from "../permission"
+import DESCRIPTION from "./edit.txt"
+import { App } from "../app/app"
+import { File } from "../file"
+import { Bus } from "../bus"
+import { FileTime } from "../file/time"
+
+export const EditTool = Tool.define({
+  id: "edit",
+  description: DESCRIPTION,
+  parameters: z.object({
+    filePath: z.string().describe("The absolute path to the file to modify"),
+    oldString: z.string().describe("The text to replace"),
+    newString: z.string().describe("The text to replace it with (must be different from old_string)"),
+    replaceAll: z.boolean().optional().describe("Replace all occurrences of old_string (default false)"),
+  }),
+  async execute(params, ctx) {
+    if (!params.filePath) {
+      throw new Error("filePath is required")
+    }
+
+    if (params.oldString === params.newString) {
+      throw new Error("oldString and newString must be different")
+    }
+
+    const app = App.info()
+    const filepath = path.isAbsolute(params.filePath) ? params.filePath : path.join(app.path.cwd, params.filePath)
+
+    await Permission.ask({
+      id: "edit",
+      sessionID: ctx.sessionID,
+      title: "Edit this file: " + filepath,
+      metadata: {
+        filePath: filepath,
+        oldString: params.oldString,
+        newString: params.newString,
+      },
+    })
+
+    let contentOld = ""
+    let contentNew = ""
+    await (async () => {
+      if (params.oldString === "") {
+        contentNew = params.newString
+        await Bun.write(filepath, params.newString)
+        await Bus.publish(File.Event.Edited, {
+          file: filepath,
+        })
+        return
+      }
+
+      const file = Bun.file(filepath)
+      const stats = await file.stat().catch(() => {})
+      if (!stats) throw new Error(`File ${filepath} not found`)
+      if (stats.isDirectory()) throw new Error(`Path is a directory, not a file: ${filepath}`)
+      await FileTime.assert(ctx.sessionID, filepath)
+      contentOld = await file.text()
+
+      contentNew = replace(contentOld, params.oldString, params.newString, params.replaceAll)
+      await file.write(contentNew)
+      await Bus.publish(File.Event.Edited, {
+        file: filepath,
+      })
+      contentNew = await file.text()
+    })()
+
+    const diff = trimDiff(createTwoFilesPatch(filepath, filepath, contentOld, contentNew))
+
+    FileTime.read(ctx.sessionID, filepath)
+
+    let output = ""
+    await LSP.touchFile(filepath, true)
+    const diagnostics = await LSP.diagnostics()
+    for (const [file, issues] of Object.entries(diagnostics)) {
+      if (issues.length === 0) continue
+      if (file === filepath) {
+        output += `\nThis file has errors, please fix\n<file_diagnostics>\n${issues.map(LSP.Diagnostic.pretty).join("\n")}\n</file_diagnostics>\n`
+        continue
+      }
+      output += `\n<project_diagnostics>\n${file}\n${issues.map(LSP.Diagnostic.pretty).join("\n")}\n</project_diagnostics>\n`
+    }
+
+    return {
+      metadata: {
+        diagnostics,
+        diff,
+      },
+      title: `${path.relative(app.path.root, filepath)}`,
+      output,
+    }
+  },
+})
+
+export type Replacer = (content: string, find: string) => Generator<string, void, unknown>
+
+export const SimpleReplacer: Replacer = function* (_content, find) {
+  yield find
+}
+
+export const LineTrimmedReplacer: Replacer = function* (content, find) {
+  const originalLines = content.split("\n")
+  const searchLines = find.split("\n")
+
+  if (searchLines[searchLines.length - 1] === "") {
+    searchLines.pop()
+  }
+
+  for (let i = 0; i <= originalLines.length - searchLines.length; i++) {
+    let matches = true
+
+    for (let j = 0; j < searchLines.length; j++) {
+      const originalTrimmed = originalLines[i + j].trim()
+      const searchTrimmed = searchLines[j].trim()
+
+      if (originalTrimmed !== searchTrimmed) {
+        matches = false
+        break
+      }
+    }
+
+    if (matches) {
+      let matchStartIndex = 0
+      for (let k = 0; k < i; k++) {
+        matchStartIndex += originalLines[k].length + 1
+      }
+
+      let matchEndIndex = matchStartIndex
+      for (let k = 0; k < searchLines.length; k++) {
+        matchEndIndex += originalLines[i + k].length + 1
+      }
+
+      yield content.substring(matchStartIndex, matchEndIndex)
+    }
+  }
+}
+
+export const BlockAnchorReplacer: Replacer = function* (content, find) {
+  const originalLines = content.split("\n")
+  const searchLines = find.split("\n")
+
+  if (searchLines.length < 3) {
+    return
+  }
+
+  if (searchLines[searchLines.length - 1] === "") {
+    searchLines.pop()
+  }
+
+  const firstLineSearch = searchLines[0].trim()
+  const lastLineSearch = searchLines[searchLines.length - 1].trim()
+
+  // Find blocks where first line matches the search first line
+  for (let i = 0; i < originalLines.length; i++) {
+    if (originalLines[i].trim() !== firstLineSearch) {
+      continue
+    }
+
+    // Look for the matching last line after this first line
+    for (let j = i + 2; j < originalLines.length; j++) {
+      if (originalLines[j].trim() === lastLineSearch) {
+        // Found a potential block from i to j
+        let matchStartIndex = 0
+        for (let k = 0; k < i; k++) {
+          matchStartIndex += originalLines[k].length + 1
+        }
+
+        let matchEndIndex = matchStartIndex
+        for (let k = 0; k <= j - i; k++) {
+          matchEndIndex += originalLines[i + k].length
+          if (k < j - i) {
+            matchEndIndex += 1 // Add newline character except for the last line
+          }
+        }
+
+        yield content.substring(matchStartIndex, matchEndIndex)
+        break // Only match the first occurrence of the last line
+      }
+    }
+  }
+}
+
+export const WhitespaceNormalizedReplacer: Replacer = function* (content, find) {
+  const normalizeWhitespace = (text: string) => text.replace(/\s+/g, " ").trim()
+  const normalizedFind = normalizeWhitespace(find)
+
+  // Handle single line matches
+  const lines = content.split("\n")
+  for (let i = 0; i < lines.length; i++) {
+    const line = lines[i]
+    if (normalizeWhitespace(line) === normalizedFind) {
+      yield line
+    }
+
+    // Also check for substring matches within lines
+    const normalizedLine = normalizeWhitespace(line)
+    if (normalizedLine.includes(normalizedFind)) {
+      // Find the actual substring in the original line that matches
+      const words = find.trim().split(/\s+/)
+      if (words.length > 0) {
+        const pattern = words.map((word) => word.replace(/[.*+?^${}()|[\]\\]/g, "\\$&")).join("\\s+")
+        try {
+          const regex = new RegExp(pattern)
+          const match = line.match(regex)
+          if (match) {
+            yield match[0]
+          }
+        } catch (e) {
+          // Invalid regex pattern, skip
+        }
+      }
+    }
+  }
+
+  // Handle multi-line matches
+  const findLines = find.split("\n")
+  if (findLines.length > 1) {
+    for (let i = 0; i <= lines.length - findLines.length; i++) {
+      const block = lines.slice(i, i + findLines.length)
+      if (normalizeWhitespace(block.join("\n")) === normalizedFind) {
+        yield block.join("\n")
+      }
+    }
+  }
+}
+
+export const IndentationFlexibleReplacer: Replacer = function* (content, find) {
+  const removeIndentation = (text: string) => {
+    const lines = text.split("\n")
+    const nonEmptyLines = lines.filter((line) => line.trim().length > 0)
+    if (nonEmptyLines.length === 0) return text
+
+    const minIndent = Math.min(
+      ...nonEmptyLines.map((line) => {
+        const match = line.match(/^(\s*)/)
+        return match ? match[1].length : 0
+      }),
+    )
+
+    return lines.map((line) => (line.trim().length === 0 ? line : line.slice(minIndent))).join("\n")
+  }
+
+  const normalizedFind = removeIndentation(find)
+  const contentLines = content.split("\n")
+  const findLines = find.split("\n")
+
+  for (let i = 0; i <= contentLines.length - findLines.length; i++) {
+    const block = contentLines.slice(i, i + findLines.length).join("\n")
+    if (removeIndentation(block) === normalizedFind) {
+      yield block
+    }
+  }
+}
+
+export const EscapeNormalizedReplacer: Replacer = function* (content, find) {
+  const unescapeString = (str: string): string => {
+    return str.replace(/\\(n|t|r|'|"|`|\\|\n|\$)/g, (match, capturedChar) => {
+      switch (capturedChar) {
+        case "n":
+          return "\n"
+        case "t":
+          return "\t"
+        case "r":
+          return "\r"
+        case "'":
+          return "'"
+        case '"':
+          return '"'
+        case "`":
+          return "`"
+        case "\\":
+          return "\\"
+        case "\n":
+          return "\n"
+        case "$":
+          return "$"
+        default:
+          return match
+      }
+    })
+  }
+
+  const unescapedFind = unescapeString(find)
+
+  // Try direct match with unescaped find string
+  if (content.includes(unescapedFind)) {
+    yield unescapedFind
+  }
+
+  // Also try finding escaped versions in content that match unescaped find
+  const lines = content.split("\n")
+  const findLines = unescapedFind.split("\n")
+
+  for (let i = 0; i <= lines.length - findLines.length; i++) {
+    const block = lines.slice(i, i + findLines.length).join("\n")
+    const unescapedBlock = unescapeString(block)
+
+    if (unescapedBlock === unescapedFind) {
+      yield block
+    }
+  }
+}
+
+export const MultiOccurrenceReplacer: Replacer = function* (content, find) {
+  // This replacer yields all exact matches, allowing the replace function
+  // to handle multiple occurrences based on replaceAll parameter
+  let startIndex = 0
+
+  while (true) {
+    const index = content.indexOf(find, startIndex)
+    if (index === -1) break
+
+    yield find
+    startIndex = index + find.length
+  }
+}
+
+export const TrimmedBoundaryReplacer: Replacer = function* (content, find) {
+  const trimmedFind = find.trim()
+
+  if (trimmedFind === find) {
+    // Already trimmed, no point in trying
+    return
+  }
+
+  // Try to find the trimmed version
+  if (content.includes(trimmedFind)) {
+    yield trimmedFind
+  }
+
+  // Also try finding blocks where trimmed content matches
+  const lines = content.split("\n")
+  const findLines = find.split("\n")
+
+  for (let i = 0; i <= lines.length - findLines.length; i++) {
+    const block = lines.slice(i, i + findLines.length).join("\n")
+
+    if (block.trim() === trimmedFind) {
+      yield block
+    }
+  }
+}
+
+export const ContextAwareReplacer: Replacer = function* (content, find) {
+  const findLines = find.split("\n")
+  if (findLines.length < 3) {
+    // Need at least 3 lines to have meaningful context
+    return
+  }
+
+  // Remove trailing empty line if present
+  if (findLines[findLines.length - 1] === "") {
+    findLines.pop()
+  }
+
+  const contentLines = content.split("\n")
+
+  // Extract first and last lines as context anchors
+  const firstLine = findLines[0].trim()
+  const lastLine = findLines[findLines.length - 1].trim()
+
+  // Find blocks that start and end with the context anchors
+  for (let i = 0; i < contentLines.length; i++) {
+    if (contentLines[i].trim() !== firstLine) continue
+
+    // Look for the matching last line
+    for (let j = i + 2; j < contentLines.length; j++) {
+      if (contentLines[j].trim() === lastLine) {
+        // Found a potential context block
+        const blockLines = contentLines.slice(i, j + 1)
+        const block = blockLines.join("\n")
+
+        // Check if the middle content has reasonable similarity
+        // (simple heuristic: at least 50% of non-empty lines should match when trimmed)
+        if (blockLines.length === findLines.length) {
+          let matchingLines = 0
+          let totalNonEmptyLines = 0
+
+          for (let k = 1; k < blockLines.length - 1; k++) {
+            const blockLine = blockLines[k].trim()
+            const findLine = findLines[k].trim()
+
+            if (blockLine.length > 0 || findLine.length > 0) {
+              totalNonEmptyLines++
+              if (blockLine === findLine) {
+                matchingLines++
+              }
+            }
+          }
+
+          if (totalNonEmptyLines === 0 || matchingLines / totalNonEmptyLines >= 0.5) {
+            yield block
+            break // Only match the first occurrence
+          }
+        }
+        break
+      }
+    }
+  }
+}
+
+function trimDiff(diff: string): string {
+  const lines = diff.split("\n")
+  const contentLines = lines.filter(
+    (line) =>
+      (line.startsWith("+") || line.startsWith("-") || line.startsWith(" ")) &&
+      !line.startsWith("---") &&
+      !line.startsWith("+++"),
+  )
+
+  if (contentLines.length === 0) return diff
+
+  let min = Infinity
+  for (const line of contentLines) {
+    const content = line.slice(1)
+    if (content.trim().length > 0) {
+      const match = content.match(/^(\s*)/)
+      if (match) min = Math.min(min, match[1].length)
+    }
+  }
+  if (min === Infinity || min === 0) return diff
+  const trimmedLines = lines.map((line) => {
+    if (
+      (line.startsWith("+") || line.startsWith("-") || line.startsWith(" ")) &&
+      !line.startsWith("---") &&
+      !line.startsWith("+++")
+    ) {
+      const prefix = line[0]
+      const content = line.slice(1)
+      return prefix + content.slice(min)
+    }
+    return line
+  })
+
+  return trimmedLines.join("\n")
+}
+
+export function replace(content: string, oldString: string, newString: string, replaceAll = false): string {
+  if (oldString === newString) {
+    throw new Error("oldString and newString must be different")
+  }
+
+  for (const replacer of [
+    SimpleReplacer,
+    LineTrimmedReplacer,
+    BlockAnchorReplacer,
+    WhitespaceNormalizedReplacer,
+    IndentationFlexibleReplacer,
+    // EscapeNormalizedReplacer,
+    // TrimmedBoundaryReplacer,
+    // ContextAwareReplacer,
+    // MultiOccurrenceReplacer,
+  ]) {
+    for (const search of replacer(content, oldString)) {
+      const index = content.indexOf(search)
+      if (index === -1) continue
+      if (replaceAll) {
+        return content.replaceAll(search, newString)
+      }
+      const lastIndex = content.lastIndexOf(search)
+      if (index !== lastIndex) continue
+      return content.substring(0, index) + newString + content.substring(index + search.length)
+    }
+  }
+  throw new Error("oldString not found in content or was found multiple times")
+}

packages/opencode/src/tool/edit.txt

@@ -0,0 +1,9 @@
+Performs exact string replacements in files. 
+
+Usage:
+- You must use your `Read` tool at least once in the conversation before editing. This tool will error if you attempt an edit without reading the file. 
+- When editing text from Read tool output, ensure you preserve the exact indentation (tabs/spaces) as it appears AFTER the line number prefix. The line number prefix format is: spaces + line number + tab. Everything after that tab is the actual file content to match. Never include any part of the line number prefix in the old_string or new_string.
+- ALWAYS prefer editing existing files in the codebase. NEVER write new files unless explicitly required.
+- Only use emojis if the user explicitly requests it. Avoid adding emojis to files unless asked.
+- The edit will FAIL if `old_string` is not unique in the file. Either provide a larger string with more surrounding context to make it unique or use `replace_all` to change every instance of `old_string`. 
+- Use `replace_all` for replacing and renaming strings across the file. This parameter is useful if you want to rename a variable for instance.

packages/opencode/src/tool/glob.ts

@@ -0,0 +1,67 @@
+import { z } from "zod"
+import path from "path"
+import { Tool } from "./tool"
+import { App } from "../app/app"
+import DESCRIPTION from "./glob.txt"
+import { Ripgrep } from "../file/ripgrep"
+
+export const GlobTool = Tool.define({
+  id: "glob",
+  description: DESCRIPTION,
+  parameters: z.object({
+    pattern: z.string().describe("The glob pattern to match files against"),
+    path: z
+      .string()
+      .optional()
+      .describe(
+        `The directory to search in. If not specified, the current working directory will be used. IMPORTANT: Omit this field to use the default directory. DO NOT enter "undefined" or "null" - simply omit it for the default behavior. Must be a valid directory path if provided.`,
+      ),
+  }),
+  async execute(params) {
+    const app = App.info()
+    let search = params.path ?? app.path.cwd
+    search = path.isAbsolute(search) ? search : path.resolve(app.path.cwd, search)
+
+    const limit = 100
+    const files = []
+    let truncated = false
+    for (const file of await Ripgrep.files({
+      cwd: search,
+      glob: params.pattern,
+    })) {
+      if (files.length >= limit) {
+        truncated = true
+        break
+      }
+      const full = path.resolve(search, file)
+      const stats = await Bun.file(full)
+        .stat()
+        .then((x) => x.mtime.getTime())
+        .catch(() => 0)
+      files.push({
+        path: full,
+        mtime: stats,
+      })
+    }
+    files.sort((a, b) => b.mtime - a.mtime)
+
+    const output = []
+    if (files.length === 0) output.push("No files found")
+    if (files.length > 0) {
+      output.push(...files.map((f) => f.path))
+      if (truncated) {
+        output.push("")
+        output.push("(Results are truncated. Consider using a more specific path or pattern.)")
+      }
+    }
+
+    return {
+      title: path.relative(app.path.root, search),
+      metadata: {
+        count: files.length,
+        truncated,
+      },
+      output: output.join("\n"),
+    }
+  },
+})

packages/opencode/src/tool/glob.txt

@@ -0,0 +1,6 @@
+- Fast file pattern matching tool that works with any codebase size
+- Supports glob patterns like "**/*.js" or "src/**/*.ts"
+- Returns matching file paths sorted by modification time
+- Use this tool when you need to find files by name patterns
+- When you are doing an open ended search that may require multiple rounds of globbing and grepping, use the Agent tool instead
+- You have the capability to call multiple tools in a single response. It is always better to speculatively perform multiple searches as a batch that are potentially useful.

packages/opencode/src/tool/grep.ts

@@ -0,0 +1,119 @@
+import { z } from "zod"
+import { Tool } from "./tool"
+import { App } from "../app/app"
+import { Ripgrep } from "../file/ripgrep"
+
+import DESCRIPTION from "./grep.txt"
+
+export const GrepTool = Tool.define({
+  id: "grep",
+  description: DESCRIPTION,
+  parameters: z.object({
+    pattern: z.string().describe("The regex pattern to search for in file contents"),
+    path: z.string().optional().describe("The directory to search in. Defaults to the current working directory."),
+    include: z.string().optional().describe('File pattern to include in the search (e.g. "*.js", "*.{ts,tsx}")'),
+  }),
+  async execute(params) {
+    if (!params.pattern) {
+      throw new Error("pattern is required")
+    }
+
+    const app = App.info()
+    const searchPath = params.path || app.path.cwd
+
+    const rgPath = await Ripgrep.filepath()
+    const args = ["-n", params.pattern]
+    if (params.include) {
+      args.push("--glob", params.include)
+    }
+    args.push(searchPath)
+
+    const proc = Bun.spawn([rgPath, ...args], {
+      stdout: "pipe",
+      stderr: "pipe",
+    })
+
+    const output = await new Response(proc.stdout).text()
+    const errorOutput = await new Response(proc.stderr).text()
+    const exitCode = await proc.exited
+
+    if (exitCode === 1) {
+      return {
+        title: params.pattern,
+        metadata: { matches: 0, truncated: false },
+        output: "No files found",
+      }
+    }
+
+    if (exitCode !== 0) {
+      throw new Error(`ripgrep failed: ${errorOutput}`)
+    }
+
+    const lines = output.trim().split("\n")
+    const matches = []
+
+    for (const line of lines) {
+      if (!line) continue
+
+      const parts = line.split(":", 3)
+      if (parts.length < 3) continue
+
+      const filePath = parts[0]
+      const lineNum = parseInt(parts[1], 10)
+      const lineText = parts[2]
+
+      const file = Bun.file(filePath)
+      const stats = await file.stat().catch(() => null)
+      if (!stats) continue
+
+      matches.push({
+        path: filePath,
+        modTime: stats.mtime.getTime(),
+        lineNum,
+        lineText,
+      })
+    }
+
+    matches.sort((a, b) => b.modTime - a.modTime)
+
+    const limit = 100
+    const truncated = matches.length > limit
+    const finalMatches = truncated ? matches.slice(0, limit) : matches
+
+    if (finalMatches.length === 0) {
+      return {
+        title: params.pattern,
+        metadata: { matches: 0, truncated: false },
+        output: "No files found",
+      }
+    }
+
+    const outputLines = [`Found ${finalMatches.length} matches`]
+
+    let currentFile = ""
+    for (const match of finalMatches) {
+      if (currentFile !== match.path) {
+        if (currentFile !== "") {
+          outputLines.push("")
+        }
+        currentFile = match.path
+        outputLines.push(`${match.path}:`)
+      }
+      outputLines.push(`  Line ${match.lineNum}: ${match.lineText}`)
+    }
+
+    if (truncated) {
+      outputLines.push("")
+      outputLines.push("(Results are truncated. Consider using a more specific path or pattern.)")
+    }
+
+    return {
+      title: params.pattern,
+      metadata: {
+        matches: finalMatches.length,
+        truncated,
+      },
+      output: outputLines.join("\n"),
+    }
+  },
+})

packages/opencode/src/tool/grep.txt

@@ -0,0 +1,8 @@
+- Fast content search tool that works with any codebase size
+- Searches file contents using regular expressions
+- Supports full regex syntax (eg. "log.*Error", "function\s+\w+", etc.)
+- Filter files by pattern with the include parameter (eg. "*.js", "*.{ts,tsx}")
+- Returns file paths with at least one match sorted by modification time
+- Use this tool when you need to find files containing specific patterns
+- If you need to identify/count the number of matches within files, use the Bash tool with `rg` (ripgrep) directly. Do NOT use `grep`.
+- When you are doing an open ended search that may require multiple rounds of globbing and grepping, use the Agent tool instead