Open source coding agent for Meta's Muse Spark. Runs in Zed, JetBrains IDEs, Neovim and Emacs over ACP, and in Cursor, Windsurf, VSCodium and VS Code as an extension. New in 0.13.0: the agent checks its own web changes in a headless browser, and a Muse Gadgets skill builds, flashes and monitors ESP32 hardware. Watch every subagent live on an agent map. Uses your Muse subscription or a Model API key. No telemetry, MIT. Unofficial, not affiliated with Meta.