Amazon Blocked Meta's Muse From Shopping on Its Site, Accusing the AI Agent of Hiding Itself From Shoppers

Amazon has blocked Meta's Muse assistant from making purchases on behalf of customers on its platform, escalating a standoff over what the retailer calls an AI agent that accesses its store without permission and creates privacy and security risks for shoppers. GeekWire's report says users began seeing a warning citing Amazon's Conditions of Use as early as 20 September, days before the block was widely reported.

Amazon's specific complaints

The company's objections are concrete rather than merely competitive. According to Amazon, Meta never notified it before allowing Muse to shop on the site, the agent does not identify itself as an automated tool when it browses, and it appears to capture and store customer login credentials, a practice Amazon says could expose shoppers to security risks it has no way to monitor or contain. TechSpot's coverage adds that Amazon also says Muse can reach order histories and account pages when prompted, functionality that goes well beyond simply comparing prices or reading product listings.

Meta's defence

Meta says Muse runs inside a secure virtual machine with its own dedicated browser, and that it checks with the user before completing sensitive actions such as sending a message or making a purchase. A separate internal system called Sentinel is meant to review and approve anything Muse sends out to the internet before it happens, a safeguard Meta argues addresses exactly the kind of unsupervised behaviour Amazon is describing. Amazon's response is, in effect, that it does not trust a safeguard it cannot inspect or verify, and that the burden is on Meta to disclose the agent's activity rather than on Amazon to take Meta's assurances at face value.

A fight about who owns the customer relationship

There is a commercial motive sitting underneath the security language on both sides. An AI agent that picks products for a shopper cuts out the browsing, comparison and impulse purchasing through which Amazon sells a significant share of its advertising inventory, giving the company a direct financial reason to resist any assistant it does not control. Amazon has already taken a similar stance against Perplexity's Comet browser and says it plans to block agents from Google and OpenAI on the same grounds, suggesting the block on Muse is the opening move in a wider campaign rather than a one-off dispute, and a preview of how retailers intend to defend their storefronts as shopping increasingly happens through an assistant rather than a browser tab.