WebMCP lets a web page expose structured tools to agents

WebMCP is a Draft Community Group Report proposing a JavaScript API for web applications to register tools with natural-language descriptions and structured schemas. It would let agents invoke explicit page functions instead of relying only on clicks and interface parsing. Why it matters: Structured tools can make web-agent actions easier to inspect, but they also turn page functions into an authorization surface. Schema is not a substitute for consent, origin checks, or logs.

Try this: Expose one reversible, non-sensitive action in a test page; verify its schema, origin rule, confirmation step, and audit log before adding another tool.