WebMCP: Chrome Is About to Make Every Website an AI Agent Tool

Google just quietly dropped something that could change how AI agents interact with the entire web. It's called WebMCP — and if it takes off, it means every website becomes natively usable by AI agents without scraping, DOM hacks, or brittle automation. Here's what it is, why it matters, and what it means for founders building AI products. What WebMCP actually is WebMCP is a proposed browser API (currently in early preview in Chrome) that lets websites expose structured tools directly to AI agents. Two APIs: Declarative API — Standard actions defined directly in HTML forms. Think: book flight, submit ticket, add to cart — described in a way agents can read and execute reliably. Imperative API — More complex, dynamic interactions requiring JavaScript. For flows that can't be expressed as a simple form. The mental model: instead of an AI agent trying to figure out how to use your website by reading the DOM and guessing, your website tells the agent exactly what it can do and how. It's MC