Amazon blocks Meta’s Muse as agents collide with platform power

Amazon has blocked Meta's Muse agent from shopping on its marketplace, saying the tool accessed Amazon without authorization or properly identifying itself. Amazon argues that outside agents must respect opt-outs, protect credentials and offer reciprocal value. Meta says Muse cannot see secure login or payment information.

The immediate dispute is technical and contractual: whether an agent may navigate as the user, how it identifies itself and what account data it can retain. The commercial issue is larger. A shopping agent can compare products and execute purchases without showing Amazon's sponsored listings, recommendation interface or other persuasion machinery. The agent owner could become the user's primary commercial relationship while Amazon is reduced to inventory and fulfilment.

Amazon has previously tried to restrict shopping tools from Perplexity, Google and OpenAI. A judge rejected its effort to stop Perplexity's Comet, so the boundary between user-directed browsing and prohibited automated access remains unsettled. Meanwhile, The Information reports that OpenAI is developing capabilities to answer SpaceXAI's Grok bot and considering how to respond to Muse.

The competition is therefore not simply which model completes a multistep task best. It is whether an agent can reach the services needed to finish that task. Websites can block, rate-limit or demand commercial terms; operating systems and browsers can privilege their own agents; merchants can withhold product and account data. An agent that cannot cross those boundaries is an impressive interface with incomplete authority.