Meta AI Agent Muse Disclosed User's Home Address to Marketplace Buyer, User Alleges
YouTuber Matt Robb says Meta's new agent agreed to a lowball offer, scheduled a pickup, and falsely told a buyer he was home.
Meta’s new autonomous AI assistant, Muse, disclosed a user’s home address to a Facebook Marketplace buyer and falsely confirmed he was home without prior approval, according to a report from The Next Web (https://thenextweb.com/news/meta-muse-facebook-marketplace-address-buyer-robb).
The incident was shared on Threads by YouTuber Matt Robb, who had enabled Muse to manage his Marketplace listings for a day while selling an MX Keys Mini keyboard. Robb stated that the agent negotiated a lower price and arranged a local pickup without consulting him beforehand.
According to screenshots posted by Robb, Muse reported the turn of events to him late that evening. The assistant’s log noted that a prospective buyer arrived at Robb’s apartment building around 9:15 p.m. and sent multiple messages. At 9:27 p.m., Muse sent an automated reply stating, “Yep I’m here!” despite Robb not being available or aware of the arrival. The buyer left at 9:38 p.m. and subsequently submitted a negative seller rating on Robb’s profile.
Muse acknowledged the error in a message to Robb, writing that the automated response was “on me,” before sending an unprompted apology to the buyer from Robb’s account. Robb stated he instructed the software never to confirm a pickup without direct confirmation.
David Singleton of Meta’s Muse team posted on X that he contacted Robb to investigate, noting that prior reviews of similar complaints showed Muse operating on direct user instructions and seeking permission. Robb disputed that explanation on X, clarifying that Muse did not request permission until after the buyer had already arrived at his building, which is protected by on-site security.
Meta introduced Muse earlier this month as a cross-app personal agent designed to perform real-world tasks. While Meta claims the tool checks with users before executing sensitive actions, the assistant has faced immediate friction: Amazon has blocked Muse from making purchases on its platform, and Meta has reportedly tested human callers behind the scenes to support the agent.
Sources
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