Muse CLI Chat (unofficial)

Inception: A Muse Inside Muse

VS Code / Cursor sidebar chat that drives Meta’s Muse Code CLI (muse exec --json). The agent harness stays Muse; this extension is only the IDE UI.

Not affiliated with Meta. Muse Code, Muse Spark, and related marks belong to Meta. Install and authenticate Muse separately: Muse Code docs.

Privacy and security: PRIVACY.md · SECURITY.md

Requirements

• macOS or Linux (Muse Code CLI does not support Windows yet)
• Muse Code installed and signed in (or META_API_KEY set)
• VS Code or Cursor
• An open workspace folder that is not a symlink root (Muse rejects reparse points)

curl -fsSL https://dev.meta.ai/install.sh | sh
muse login
# or: export META_API_KEY=...   # must be visible to the editor process

The sidebar treats Muse as ready only when the CLI is present and credentials are visible (META_API_KEY in the editor env, ~/.config/muse/auth.json with an inline key/token or a Keychain-backed muse login, or muse.useEchoProvider). A key set only in your terminal shell does not reach Cursor/VS Code unless you launch the app from that shell or set it in the GUI environment.

Install (published)

After this extension is on a marketplace:

• VS Code Marketplace: search “Muse CLI Chat” (publisher codemarc)
• Open VSX / Cursor: same extension id codemarc.muse-cli-chat

Or install a local .vsix:

git clone https://github.com/codemarc/muse-code.git
cd muse-code
bun install
bun run package
code --install-extension muse-cli-chat-0.1.8.vsix
# Cursor: cursor --install-extension muse-cli-chat-0.1.8.vsix

Develop

git clone https://github.com/codemarc/muse-code.git
cd muse-code
bun install
bun run compile

Open this folder in VS Code/Cursor and press F5 (Run Muse CLI Chat Extension). That runs bun run compile first (Bun must be on your PATH). Optional: Run Muse CLI Chat Extension (watch) for bun run watch. In the Extension Development Host:

1. Open a real directory (not a symlink)
2. Command Palette → Muse CLI Chat: Open Chat (or click the Muse activity icon)
3. Optional: set muse.useEchoProvider to true for offline JSONL UI testing
4. Se