Google Opened UCP for Lodging. We Already Tested What It Needs to Handle. (opens in new tab)

Google has opened the door to agentic hotel booking. A new developer page — UCP for Lodging — describes an open standard to "turn AI interactions into instant bookings for room reservations." But there is no spec to read yet: the page says plainly that detailed onboarding and specs are "coming soon," and points you to a waitlist rather than documentation. This is an announcement, not a release. That makes now the moment to write the piece nobody else has. We have already run five frontier mod...