A popup message began appearing on Sunday for users of Meta's Muse AI agent, stating that continued access by an unauthorized AI agent violates Amazon's Conditions of Use, to which customers have agreed. According to GeekWire, Meta did not notify Amazon that Muse would access its store. Amazon cited privacy and security concerns, noting that Muse failed to identify itself when browsing and appeared to capture customer credentials.

An unnamed Amazon spokesperson told GeekWire that third-party applications offering to make purchases on behalf of customers should operate openly and respect service provider decisions about participation. Meta launched Muse earlier this month, describing it as an AI agent that cannot view secure login details or payment information. During testing, the agent successfully purchased tank tops from Amazon while other items remained in the basket.

Privacy concerns have surfaced since the launch, with reports indicating Muse can view the contents of user messages even though it lacks explicit permission for that function. This development follows Amazon's broader effort to limit competition from AI-driven shopping services. The company previously sued Perplexity in November over similar concerns regarding its Comet shopping experience, a case that ultimately favored Perplexity after a ruling in August.

Since July, Amazon's confirmation emails have shown reduced detail, omitting specific item names and product images to limit data extraction by external AI services. The move reflects ongoing tensions between major retailers and AI agents seeking to integrate with e-commerce platforms.