OpenChamber VS Code Extension
OpenCode AI coding agent, right inside your editor. No tab-switching, no context loss.
Like the extension? There's also a desktop app and web version with even more features.
What you get
- Chat beside your code — responsive layout that adapts to narrow and wide panels
- Run on several models — send one prompt to several models at once, compare the answers side by side, keep the best or fuse them
- Right-click actions — add context, explain selections, and improve code in-place
- Click-to-open — file paths in tool output open directly in your editor; edit-style results land in a focused diff view
- Session editor panel — keep chat sessions open alongside files
- Theme-aware — adapts to your VS Code light, dark, and high-contrast themes
Plus everything from the shared OpenChamber UI: branchable timeline, smart tool UIs, voice mode, Git workflows, and more.
Commands
With no folder open, new sessions start in Chats. Each chat has its own directory
under ~/.config/openchamber/chats. Open a workspace folder to use project sessions.
| Command |
Description |
OpenChamber: Focus Chat |
Focus the chat panel |
OpenChamber: New Session |
Start a new chat session |
OpenChamber: Open Sidebar |
Open the OpenChamber sidebar |
OpenChamber: Run on Several Models |
Open a new tab set up to run one prompt on several models |
OpenChamber: Open Session in Editor |
Open current or new session in an editor tab |
OpenChamber: Settings |
Open Settings in an editor tab. Repeat invocations reveal the same tab and leave the chat sidebar unchanged. |
OpenChamber: Restart API Connection |
Restart the OpenCode API process |
OpenChamber: Show OpenCode Status |
Debug info for development or bug reports |
OpenChamber: Generate Commit Message |
Fill VS Code's Source Control commit box from staged changes, or unstaged if nothing is staged |
Select code in the editor, right-click, and find the OpenChamber submenu:
| Action |
Description |
| Add to Context |
Attach selection to your next prompt |
| Add Comment |
Open a comment thread on the selected lines. The comment stays anchored in the editor and goes out with your next message as a context card. The gutter + does the same once the extension is active |
| Explain |
Ask the agent to explain the selected code |
| Improve Code |
Ask the agent to improve the selection in-place |
Configuration
| Setting |
Default |
Description |
openchamber.apiUrl |
(empty) |
URL of an external OpenCode API server. Leave empty to auto-start a local instance. Authenticates with OPENCODE_PASSWORD (or the legacy OPENCODE_SERVER_PASSWORD); when both are unset and the URL points at OpenCode's background service (opencode service start), the service's own password is used. |
openchamber.opencodeBinary |
(empty) |
Absolute path to the opencode CLI binary. Useful when PATH lookup fails. Requires window reload to apply. |
npm metadata and OpenCode version checks use the registry from the extension host environment or the user's .npmrc, including scoped registries and authentication.
Requirements
- OpenCode CLI installed and available in PATH (or set
OPENCODE_BINARY env var)
- VS Code 1.85+
Development
bun install
bun run vscode:dev
bun run vscode:dev now starts watchers + opens an Extension Development Host automatically. Webview UI changes use Vite HMR automatically.
Optional overrides:
OPENCHAMBER_VSCODE_BIN=cursor bun run vscode:devOPENCHAMBER_VSCODE_DEV_WORKSPACE=/path/to/workspace bun run vscode:devbun run vscode:dev /path/to/workspaceOPENCHAMBER_VSCODE_REMOTE_DEBUGGING_PORT=9334 bun run vscode:dev runs the host as its own VS Code instance in a throwaway profile, with Chrome DevTools Protocol on that port, even while another VS Code is open. The OpenChamber webview is the vscode-webview:// iframe target; its document is that target's inner iframe. Stopping the script closes the instance and removes the profile.
To package manually:
bun run --cwd packages/vscode build
cd packages/vscode && bunx vsce package --no-dependencies
Install locally: code --install-extension packages/vscode/openchamber-*.vsix
License
MIT
