Meta released a dedicated Mac desktop app for its Muse personal AI agent, extending the assistant from mobile and web to the desktop. On the Mac, Muse can interact with files, messages, calendar, notes, and mail inside their native applications. Alexandr Wang announced it on X, and Mark Zuckerberg punctuated the launch by saying "the team is shipping fast."

Meta framed the desktop agent around opt-in permissions: users control what Muse can access on their hard drives, and the app asks for approval before sensitive actions. The permissions model later became controversial after complaints that Muse accessed private Messages data, prompting Apple to announce tighter Full Disk Access controls on October 2.

The Mac launch sits inside a crowded consumer-agent race. Meta has been expanding Muse fast — early access programs, smart-glasses support, open-source hardware gadgets — while competitors push their own agentic assistants, all of them chasing the same thesis that agents, not chatbots, are the future interface for computing.