Muse Code
Terminal coding agent from Meta, in beta, that plans, writes and validates code changes across large repositories.
Software you sign up for or install and run yourself. Submitted listing, not yet checked. Nothing on this page is sponsored.
What it does
Muse Code is a coding agent that runs in the terminal, launched as a beta on 5 August 2026 and powered by the Muse Spark 1.2 model. A developer types a task; the agent plans the change, writes code, validates the result and can run several background subagents on one task. Bundled skills include /plan, which waits for approval before work continues, /grill, which stress-tests a plan, and /goal, which works toward a set objective. A local event log records every model call, tool run, approval and edit so a run can resume after a crash. Subscriptions start in Contributor mode, where Meta may use your content for training in exchange for more usage; it can be switched off at any time.
- Type
- Software product
- Pricing
- Pricing not published
- Setup
- Developer setup
- Access
- Desktop app
- Human review
- Review is optional
- Vendor
- Meta
- Website
- dev.meta.aiChecked 19 October 2026
- Listed
- 19 October 2026
You provide
- A task typed in the terminal
- A local repository
- Approval of plans made with /plan
You receive
- Code changes
- A plan for approval
- Validated results
- A local event log of calls, tool runs, approvals and edits
How the work runs
- 01
Type a task in the terminal
- 02
The agent plans the change, and /plan waits for approval
- 03
It writes code, optionally with background subagents
- 04
It validates the result
Before it is handed over
Review is optional. The work is accepted only when each of these is recorded.
- Plans made with /plan need approval before work continues
- Approvals are recorded in the local event log
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