Muse Code
Meta's terminal and CI coding agent (the muse CLI), built for Muse Spark, with subagents in isolated worktrees and a replayable event log.
- Maker
- Meta
- Kind
- coding agent
- Interface
- CLI, SDK
- Open source
- —
- GitHub stars
- —
- Models
- Meta Muse models (default muse-spark-1.2; plans include Muse Spark, Muse Wonder, Muse Image)
- Pricing
- Pay-as-you-go per token with a Meta Model API key, or a flat monthly subscription (Everyday, High, Power and Maximum Usage plans). Plan prices aren't listed on the docs page. (source: official page, checked 2026-10-17)
- MCP support
- Yes
- Subagents
- Yes
- Headless / scripted mode
- Yes muse exec "<prompt>" (JSONL with --json).
- Sandboxing
- Yes OS sandbox on from the first run. MCP tools and hooks run outside it.
- Note
- Not the same as Meta's consumer personal agent 'Muse' (launched 2026-09-08), which isn't a developer harness. TypeScript SDK is in developer preview.
- Official site
- https://dev.meta.ai/docs/muse-code
- Sources
- dev.meta.ai/docs/muse-code · dev.meta.ai/docs/muse-code/extending · dev.meta.ai/docs/muse-code/subscriptions · dev.meta.ai/resources/blog/muse-code-new-plans-and-features · dev.meta.ai/resources/blog/build-with-muse-code · dev.meta.ai/docs/muse-code/permissions (docs checked 2026-10-17)
- Other coding agents
- Claude Code, OpenAI Codex CLI, Gemini CLI, OpenCode, goose, Aider, Cline, Roo Code, Kilo Code, OpenHands, Crush, Amp, Cursor CLI, Warp, Qwen Code, Plandex, Pi, Grok Build, Hermes Agent
Every value comes from the official site or docs, or from the GitHub API, on the date shown. A blank (—) means the value isn't stated or wasn't verified. It never means 'no'. Pricing is copied from official pages and changes often. No affiliate links.