On Windows, VS Code's uri.fsPath returns a lowercase drive letter (e.g. d:\MyProject) while the OpenCode server stores paths using process.cwd() which returns uppercase (D:\MyProject). This caused session queries to return empty results due to case-sensitive string comparison. Normalize drive letters to uppercase in both the VS Code extension (opencode.ts) and the shared UI client (client.ts) so that directory paths match regardless of the source casing. Fixes #670
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
- Agent Manager — run the same prompt across multiple models in parallel, compare results side by side
- 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
| 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: Open Agent Manager |
Launch parallel multi-model runs |
OpenChamber: Open Session in Editor |
Open current or new session in an editor tab |
OpenChamber: Settings |
Open extension settings |
OpenChamber: Restart API Connection |
Restart the OpenCode API process |
OpenChamber: Show OpenCode Status |
Debug info for development or bug reports |
Right-click menu
Select code in the editor, right-click, and find the OpenChamber submenu:
| Action | Description |
|---|---|
| Add to Context | Attach selection to your next prompt |
| 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. |
openchamber.opencodeBinary |
(empty) | Absolute path to the opencode CLI binary. Useful when PATH lookup fails. Requires window reload to apply. |
Requirements
- OpenCode CLI installed and available in PATH (or set
OPENCODE_BINARYenv var) - VS Code 1.85+
Development
bun install
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

