Meta has put its Muse agent on the Chrome Web Store. The listing, offered by Meta and first flagged on X by TestingCatalog on Friday, describes it as “Your personal AI agent in Chrome”. When we read it at 17:36 UTC on 13 November it showed version 2.0.65, updated on 12 November, and 126 users.
Anthropic’s Claude extension showed 22,000,000 users on its own listing a minute later. That is about 175,000 times as many, by our arithmetic. Muse in Chrome starts from almost zero installs in a market where a rival agent is already in the browser at scale.
Business Pill · Distribution Advantage
An evergreen Business Engineer explainer on distribution advantage: why reach decides which product gets tried. It teaches the general idea only and does not discuss Meta, Muse or Anthropic.
The key insight: As we read the listing, Meta has the agent and the connectors but not yet the installs: Muse from Meta showed 126 users against 22,000,000 for Anthropic’s Claude extension when we read both listings.
Meta pitches the extension as a way to “take everyday tasks off your plate, from filling out forms to comparing prices and following up on refunds”. It opens “in Chrome’s side panel without leaving the page you’re on”. On control, the listing says: “Approve actions before they happen. Muse keeps a full activity log, and lets you revoke any connector anytime”.
The listing also says users can link “email, calendar, Instagram, Facebook, health and fitness data, and finances”, and that Muse can buy “on your behalf, with your OK”. It carries a warning in Meta’s own words: “Muse may be inaccurate or take unexpected actions, so check in to keep it on track and intervene as needed”.
Users shown on the Chrome Web Store listings for Anthropic’s Claude extension (22,000,000) and Muse from Meta (126), read at 17:36-17:37 UTC on 13 November 2026. The ratio is our arithmetic.
What Was Posted on X
META 🔥: Muse is getting a new Chrome extension that can operate on open web pages.
Chrome Web Store description 👀
> “Your personal AI agent in Chrome. Hand off tasks, take busywork off your plate and stay in control.”
> “Muse is your personal AI agent that gets things done, always working on what matters to you. Bring it into Chrome to take everyday tasks off your plate, from filling out forms to comparing prices and following up on refunds.”
> “Open Muse in Chrome’s side panel without leaving the page you’re on. Pick up your conversations, right alongside your browsing.
> “Approve actions before they happen. Muse keeps a full activity log, and lets you revoke any connector anytime.”
It’s already available for testing; check it out below!
— 🚨 AI News | TestingCatalog (@testingcatalog) Nov 13 15:16
TestingCatalog flagged the Muse Chrome extension on Friday, quoted its Chrome Web Store description and said it is already available for testing; this piece reads the listing itself.
Nine Kinds of Data
The privacy section of the listing names nine categories of data that Muse from Meta handles: personally identifiable information, health information, financial and payment information, authentication information, personal communications, location, web history, user activity and website content. The developer declares that the data is not being sold to third parties outside approved use cases.
The listing names Meta Platforms, Inc. in Menlo Park as the developer, and says it is offered in 41 languages at 2.29MiB. It had no ratings when we read it. Meta has identified itself as a trader under the European Union definition on the listing.
The Claude listing, version 1.0.107, was also updated on 12 November and carries 2K ratings with a 3.5 average. A browser extension is a distribution play: it puts the agent beside the forms, carts and refund pages where the work sits, rather than asking the user to open a separate app.
The Structural Read
As we read it, the listing is built around control: it says users approve actions before they happen, that Muse keeps a full activity log, and that any connector can be revoked.
As we read the privacy section, the extension asks for wide reach: the listing names nine categories of data that Muse from Meta handles, from health and financial information to web history and website content.
The Muse from Meta listing on the Chrome Web Store
“Muse may be inaccurate or take unexpected actions, so check in to keep it on track and intervene as needed”
Three Implications
FOR SHOPPERS The listing says Muse compares prices, tracks price drops and can buy on a user’s behalf with approval.
FOR MERCHANTS An agent working in the user’s own browser tab reaches the same checkout pages a person does; our earlier coverage reported eBay appears to block Muse.
FOR OUR COVERAGE We will report Meta’s announcement, pricing or install figures for the extension when they are published.
The analysis says: “The agentic surface — the harness — is becoming where value pools in the entire AI stack.”
As we read it, a Chrome extension is Meta moving Muse onto a surface where Anthropic’s Claude already shows 22,000,000 users. The analysis predates the Muse extension and does not discuss it.
What Is Not Established
The user counts are the figures the Chrome Web Store displays and can lag actual installs. TestingCatalog said the extension is already available for testing; the listing does not say whether it is a full launch, and it does not state a price. We found no Meta newsroom post on the Chrome extension when we checked at 17:40 UTC. The listing page we read did not show the extension’s permission list.
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Meta’s Muse is on the Chrome Web Store as an agent that fills forms, compares prices and follows up on refunds, with approval before actions and a full activity log. It showed 126 users and nine declared data categories when we read it, against 22,000,000 users for Anthropic’s Claude extension.
A note on sourcing. We read the Chrome Web Store listing for Muse from Meta, offered by Meta, at 17:36 UTC on 13 November, and the listing for Anthropic’s Claude extension at 17:37 UTC. User counts, versions, dates and data categories are as those pages displayed them. TestingCatalog first reported the extension on X. The ratio of user counts is our arithmetic.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
