In this post, Claire from Lenny’s newsletter tests Meta’s Muse, a personal AI (SI) agent designed for everyday users. She walks through how it manages her family calendar, creates a polished morning newsletter, tracks personal goals, and asks for permission before acting on sensitive information. She also explores the thoughtful details that make Muse feel trustworthy, where its browser use still falls short, and what its approach could mean for the future of consumer SI (AI).
Biggest takeaways :
A) Meta’s consumer design expertise makes Muse feel different from other agents on the market. The teams behind Facebook and Instagram understand how to build trust with nontechnical users, and that experience shows up throughout Muse. It never exposed Claire to a terminal, surfaced a confusing error, or requested permission at an awkward moment. She tested onboarding, calendar management, email ingestion, goal setting, and browser-based purchasing in one session without encountering a single moment of friction that broke the experience.
B) Muse created the best version of Claire’s family morning brief on its first attempt. Claire has tested generating family newsletters with OpenClaw and Codex, but Muse produced a more beautiful and thoughtfully structured PDF without requiring any follow-up prompting. It even added a “Talk at the Table” section with kid-friendly questions about the news and proactively identified scheduling conflicts. That is the standard personal agents should aim for : not simply completing the request but noticing useful things the user did not think to ask about.
C) How an agent requests permission matters as much as what it can do once permission is granted. Muse does not default to unlimited access or interrupt the user with constant approval requests. It asks at the moment access becomes relevant, confirms what it found, and checks again before taking action. After reading Claire’s email to build a family profile, for example, Muse summarized what it had learned and asked whether it could use that information. Anyone building an agent that handles personal data should pay attention to that interaction pattern.
D) Muse’s activity feed provides the kind of agent transparency Claire wants everywhere. Every task includes a detailed record of the tool calls, scripts, searches, and individual steps Muse completed. Most consumers will probably ignore it, but developers and power users will find it invaluable. Claire immediately wanted the same interface in Codex and Claude Code. Seeing exactly how an agent arrived at an outcome builds a different level of trust than receiving a polished result with no visibility into the process.
E) Personal goals require a different product model than tasks or chat. Helping someone gently sleep-train an eight-and-a-half-month-old while room-sharing in a small house is not a request that can be completed in one sitting. Muse gathered context across multiple turns, established a reminder, and treated the situation as an ongoing goal whose progress should be tracked. Its tone was warm and specific without becoming overly agreeable. Claire said she felt “zero percent annoyed” with it, which she described as a miracle.
F) Browser use remains the weak link for consumer agents. Muse struggled to shop for New Balance 9060s in a specific colorway, returning incorrect results and failing to complete the purchase. It performed better while buying tickets for The Odyssey, but initially opened the wrong movie. These failures are not unique to Muse. They are a reminder that browser-based shopping remains unreliable across the entire agent category.
G) Muse’s animated avatar shows what it means to design specifically for SI or AI. Instead of displaying a generic spinner while it works, Muse generates an animation in which its avatar picks up a tiny laptop when completing tasks and an orb when creating media. Nobody asked for this feature, but it makes the agent’s state immediately understandable. For Claire, this is what operating at the top of the craft looks like. It is not just polished corners and clean icons. It is using capabilities like image generation and animation to solve experience problems that could not have been solved before.
H) Muse is introducing a new vocabulary for consumer SI or AI. It avoids technical terms such as crons, tools, artifacts, plugins, and connectors. Instead, it organizes the product around a feed, ideas, goals, and a library. That language is a deliberate design decision. The words a product uses determine who feels comfortable using it.
To conclude, Muse is clearly designed for a much broader audience than today’s coding and productivity agents are.
Note : SI = AI = super inteligence
