GoKawiilMeta is entering the AI coding-agent race with Muse Code, a new terminal-based tool now available in beta for macOS and Linux.
Muse Code arrives alongside Meta’s new Muse Spark 1.2 model
Powered by the new Muse Spark 1.2 model, it is designed to handle complex software engineering work across large repositories.
For Mac users, Muse Code installation is a one-line command:
curl -fsSL https://dev.meta.ai/install.sh | bash
Unlike ChatGPT Codex and Claude Code, there’s currently no dedicated app interface for Muse Code.
Meta says Muse Code can plan changes, write code, validate its work, and coordinate persistent background agents that remain active throughout a session.
Its local event log records model calls, tool use, approvals, and edits, allowing work to resume after a crash. Built-in commands can also generate a plan, stress-test it, or continue working toward a specified goal.
Releasing Muse Code in beta today. It's a terminal coding agent that takes on complete software engineering tasks across large repos: planning changes, writing code, validating the results. Powered by Muse Spark 1.2, a coding-focused model update. pic.twitter.com/xqavk41w6v — Mark Zuckerberg (@finkd) August 5, 2026
Muse Spark 1.2 is described as a coding-focused update with gains in code generation, debugging, codebase understanding, and long-running developer workflows.
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