Meta’s Muse agent quietly lands in the Chrome Web Store

Meta’s Muse agent can now work inside Chrome. An extension called Muse from Meta is live on the Chrome Web Store, and Meta’s listing, last updated on November 12, says it handles nine categories of user data, including health, financial and authentication information, personal communications and web history. If you install it, Muse works through the accounts you’re already signed into in Chrome. The extension’s own setup screens, which we read in the package, tell you to log out of any account you don’t want it to use.

Testing Catalog reported that Meta has not announced the release. Muse already had mobile apps, a desktop app and a web version. The extension opens it in Chrome’s side panel, where you log in, pick up existing conversations and ask the agent to navigate sites, control pages, help with shopping or book cinema tickets without leaving the page. The panel also has sub-conversations and settings, but some sections, including Ideas, still redirect to the Muse website. How well the browser automation works across different sites has yet to be tested.

When we checked the listing on November 13, it showed 126 users and no ratings.

What it asks to connect

The listing invites you to link email, calendar, Instagram, Facebook, health and fitness data, and finances. It pitches Muse for whole jobs, such as selling a car, negotiating a bill down or booking a trip. Small businesses can connect Instagram Business accounts, Facebook Pages and Meta ad accounts. The listing names three controls: you approve actions before they happen, Muse keeps a full activity log, and you can revoke any connector at any time. Meta says the data is not sold to third parties outside approved use cases and is not used to determine creditworthiness. The setup screens also cover training. The information used for your tasks is part of your interactions with Muse, “which we may use to improve AI at Meta,” and you can manage this in settings.

Muse is sold as “AI-powered shopping that can actually buy on your behalf, with your OK.” With subscriptions, it checks with you “before it cancels or spends.” The same listing says Muse “may be inaccurate or take unexpected actions, so check in to keep it on track and intervene as needed.”

In the extension’s WebAssembly core, the compiled engine behind its browser actions, we found 344 entries naming merchant checkout pages, each next to a URL pattern. IKEA, Delta and Hulu are among them. The core also names page signals for one-time-code, password and card-number fields and for Shop Pay checkout. A bundled helper for typing passwords carries a comment saying it never returns any part of the value. The strings don’t show what the agent does when one of these signals fires. Our inference is that it feeds the approval step.

Taking a tab back

Muse’s tabs open in their own tab group, and while it works, Chrome shows its standard bar warning that the browser is being debugged. If you cancel that bar, the extension asks whether to keep Muse working, with “Keep working” as the default button. The setup screens say you can watch, pause, take over or stop Muse’s activity at any time. To take over a single tab, drag it out of Muse’s group.