Meta CEO Mark Zuckerberg announced the official launch of Muse for Mac, a desktop AI agent capable of accessing files, calendars, notes, and messages across applications. Users retain full control over the specific access scope granted to the agent within their system. The tool performs multi-step tasks across connected apps and web pages, continuing to operate in the background even after the application is closed. The Mac version supports keyboard shortcuts for quick launching and assists with writing, research, and daily tasks based on current window content.