On September 21, Amazon cut off Meta's personal AI agent, Muse, from making purchases on Amazon on behalf of users. Users attempting to shop via Muse received a prompt stating that unauthorized AI agents continuously accessing Amazon violated its terms of service. Amazon stated that it had previously requested Meta to proactively exclude Amazon from Muse's services but received no response. Amazon's reasons primarily involve authorization, identity disclosure, and account security, arguing that Muse accessed user accounts without authorization, processed transactions, and accessed related data, without proactively disclosing its AI agent identity. Meta officially launched Muse on September 8, and it topped the Apple US App Store's free app chart just one week after its release. Amazon had previously filed a lawsuit against Perplexity's AI browser, but the related injunction was overturned. This time, the prompt targeting Muse directly refers to Amazon's "terms of service," indicating that the core of the dispute between the two parties is shifting towards whether AI agents are authorized by the platform. Analysts believe that AI personal shoppers could impact Amazon's annual advertising revenue of over $68 billion, touching upon the core interests of e-commerce platforms.