Muse Code by Meta

Muse Code is Meta Superintelligence Labs’ terminal coding agent, released in beta on 5 August 2026 and co-trained with the Muse Spark 1.2 model. It installs on macOS and Linux with a single shell command, plans and executes multi-step work across large repositories, and fans work out to parallel subagents that each get their own isolated git worktree. Approvals and an OS-enforced sandbox (Seatbelt on macOS, bubblewrap on Linux) are on by default, and an append-only local event log makes a killed session replay-exact and restart-safe. Bundled skills include /plan, /grill and /goal.