Meta releases Muse Code coding agent in beta

Meta Platforms announced Muse Code, a beta terminal-based coding agent built to handle end-to-end software engineering tasks across large codebases. The tool can plan changes, write code, and validate results, and it is powered by the updated Muse Spark 1.2 model optimized for coding. Meta says the agent uses persistent background workers to retain context during a session and can spawn parallel sub-agents for larger tasks without disrupting the main working copy. In testing, Meta said it used the system to build six game features simultaneously without conflicts. The launch reinforces Meta’s push into AI developer tooling and could support longer-term sentiment around its AI product stack, though the article does not indicate immediate financial impact or guidance changes. The stock reaction appears modest, with META slightly higher on the session.