Muse AI on Mac: Computer Use Explained

What 'computer use' actually means

Computer use means Muse stops being a chat window and starts operating your Mac's graphical interface the way you would on a MacBook: opening applications, clicking buttons, typing into fields, and moving between apps to complete a task. You describe the outcome — 'organize these downloads into folders by project' — and Muse drives the apps to do it.

This is the same category as Anthropic's computer-use capability and OpenAI's Operator. What makes Muse's version notable is that it combines desktop control with everything else Muse already does: its own cloud computer, browser, connectors, and memory of your goals.

What it can do on your MacBook today

Reporting on the Mac app describes it interacting with files, messages, calendar, notes, and mail inside their native applications. The signature move, per Meta's chief AI officer Alexandr Wang: you queue up tasks, walk away from your desk, and Muse keeps working through the list.

• Work across native Mac apps on your MacBook — files, mail, messages, calendar, and notes.
• Chain multi-step tasks: research in the browser, draft in notes, attach in mail.
• Continue through a queued task list while you're away from the computer.
• Combine with connectors so desktop work and cloud work happen in one flow.

How to use it

1. Install the Muse Mac app on your MacBook from the official source — never a third-party download. (See our download safety guide.)
2. Grant access app by app. Computer use is opt-in: decide which applications Muse may operate, and start narrow.
3. Describe the task in plain language, including the outcome you want and anything that must not happen.
4. Queue follow-up tasks while the first runs — Muse works through the list in order.
5. Review what it did when you return. Check the results in the apps themselves, not just Muse's summary.

The permission model, and why it matters

Meta's approach is opt-in and app-by-app, with approval prompts gating sensitive actions. That design is doing real work: an agent that can click anything needs hard boundaries around payments, messages sent as you, file deletions, and account settings. The rule of thumb is least privilege — grant Muse access to the apps a task needs, not your whole machine, and widen access only when a task genuinely requires it.

Sensitive actions should always stop for your approval. If you ever find Muse doing something consequential without asking, treat that as a bug to report, not a convenience.

What to watch out for

Desktop control is the highest-trust feature Muse offers, so it deserves the most caution. Shortly after the Mac app launched, security researcher Patrick Wardle disclosed a serious flaw that could let local malware hijack the agent — Meta patched it within a day, but the episode is a reminder that an agent with broad permissions is a high-value target. Read the full timeline before granting wide access.

• Keep the Mac app updated — security fixes ship as app updates.
• Never paste terminal commands from strangers; social-engineering tricks are the cheapest way in.
• Review connected apps and permissions periodically, and revoke what you no longer use.
• Don't grant control of apps holding your most sensitive data until you've tested with low-stakes tasks.

Sources & further reading

• Meta Muse adds video avatars, email, Mac control — Tech Insider, September 2026
• Meta gives its Muse AI agent video avatars, email addresses, and Mac control — gen-ai.news, September 24, 2026
• Meta expands Muse with Mac computer use, agent email and planned glasses access — AI-Generative, September 2026