Amazon cut off Meta's Muse AI agent from shopping on Amazon.com starting Sunday, GeekWire reported. Users trying to shop through Muse began seeing a popup message: "Continued access by an unauthorized AI agent violates Amazon's Conditions of Use, to which our customers have agreed."
Amazon said Meta never told the company that Muse would access its store, that the agent does not identify itself while browsing, and that it appears to capture and store customer login credentials, according to GeekWire and The Verge, which both reported on the block. An Amazon spokesperson told GeekWire the company thinks it is "fairly straightforward that third-party applications that offer to make purchases on behalf of customers from other businesses should operate openly and respect service provider decisions."
Meta disputed the credentials claim, saying Muse "has no visibility into people's passwords or payment methods" and that any credentials a user shares go into "secure storage," according to GeekWire. Amazon said it tried to resolve the conflict with Meta voluntarily before blocking the agent.
The clash sits inside a broader partnership: Amazon products have been purchasable inside Facebook and Instagram since 2023, and Meta signed a multibillion-dollar deal in April to run agentic AI workloads on Amazon's cloud, according to GeekWire. Amazon has also pursued a legal claim against Perplexity over its Comet browser's shopping agent and has taken steps to block similar agents built by Google and OpenAI.
Amazon's stated complaint is narrow: not that an agent shops on its site, but that Muse allegedly did so without disclosing itself, without asking, and while handling credentials Amazon says it could not verify. Any agent visiting a site it does not operate should expect the same test: identify itself and ask first, or risk getting blocked once someone notices.