WebMCP: Chrome Is Turning Every Website into an AI Agent Tool

Chrome just shipped something quietly important. WebMCP — available now in early preview — is a new browser API that lets websites declare themselves as structured tools for AI agents. Not scraped. Not approximated via DOM crawling. Declared. By the site itself. This is a bigger deal than the announcement makes it sound. What WebMCP actually is Right now, when an AI agent needs to interact with a website — book a flight, file a support ticket, fill a form — it does so by reading the DOM and guessing. It's like a blind person navigating a room by touching every surface. WebMCP gives websites a way to say: here's exactly what you can do here, and here's how to do it. Two APIs: Declarative API — standard actions defined directly in HTML. The agent reads the spec, not the DOM. Imperative API — complex dynamic interactions that require JavaScript. For the things that can't be described statically. The result: agents can interact with your site faster, more reliably, and without breaking eve