Meta Muse, the personal AI agent Meta launched on September 8, can no longer shop on Amazon. Since Sunday night, Muse users who ask it to buy something there get a popup saying "Continued access by an unauthorized AI agent violates Amazon's Conditions of Use", according to GeekWire . If you build anything that browses the web on a user's behalf, this is the first big test of who decides whether your agent gets through the door: the user, the agent's maker, or the store. TL...