Meta has released a beta coding agent designed to handle complex software assignments across large codebases.
Available for macOS and Linux, Muse Code uses the company’s new Muse Spark 1.2 model. It includes specialized background agents that remain active throughout a session instead of being created separately for individual tasks.
The agents carry out work asynchronously and decide when to report their findings to the primary agent. Meta said keeping them active reduces repeated information gathering and the need for developer direction during difficult, multi-step tasks.
“Muse Code uses a local event log in which every model call, tool run, approval, and edit is appended,” Meta said in a post, adding that the record “makes the runtime replay-exact and restart-safe” and allows the agent to resume precisely where it stopped after a crash.
Muse Spark 1.2 is available through Muse Code and the Meta Model API, for which Meta announced expanded global access.
