Meta launches Muse Code AI coding agent for macOS and Linux

Meta has entered the AI coding-agent market with Muse Code, a terminal-based coding agent now in beta for macOS and Linux. The product comes from Meta and is positioned as a direct participant in the race among tools that help developers write, edit, and reason about code from the command line.

Muse Code runs as a terminal-based agent rather than a GUI-first IDE plugin. In beta form it targets macOS and Linux, so early access is limited to those platforms. That choice points to a workflow built around shells, local repos, and CLI tooling instead of a browser or desktop chat window alone.

For engineers and builders, a Meta-backed terminal agent matters because coding agents are becoming part of daily development loops, not side experiments. Teams already living in the terminal can evaluate Muse Code next to other agents without changing their primary environment. Platform support still gates adoption: macOS and Linux users can try the beta; others cannot yet.

The launch places Meta among vendors competing for the AI coding-agent slot on developer machines. Muse Code is an explicit move into that category, not a general chat product rebranded as coding help. How it stacks up will depend on reliability, repo awareness, and fit with existing terminal workflows once more hands-on reports appear.

Watch the beta on macOS and Linux for real task quality, friction with common stacks, and whether Meta expands beyond those two platforms. Practical next step for interested teams is a small, reversible trial on a non-critical repo rather than a broad rollout while the product is still in beta.