Knowledge base v2.13.0 · Community edition · data through 2 October 2026
Thing · Standard
A proposed web standard that lets a page expose its actions as tools that AI agents in the browser can call.
Glossary · WebMCP
Web Model Context Protocol: a proposed web standard that lets a site declare the actions it offers AI agents, through declarative HTML annotations or imperative tools. Chrome offers it for testing through an origin trial or a flag.
Documented in
Chrome's WebMCP documentation describes WebMCP as a proposed web standard that site owners can test through an origin trial starting in Chrome 149 or through a Chrome flag for local development.
Chrome for Developers · Day 1 · Lightning session A: Automation and AI
Slide and stage claims that name it, the ones Google’s documentation does not cover first.
Combining schema-based interfaces with web standards such as WebMCP lets a site expose tools to AI agents, which can then operate the interfaces, for example to test them.
Erin Sparling · Day 2 · What is Google friendly JavaScript
A community speaker presented WebMCP (Web Model Context Protocol) as a way for a site to declare the actions it offers to AI agents, for example booking an appointment in a calendar, so an agent does not have to scrape the interface; the speaker called it faster, easier and cheaper.
Carlos Ortega · Day 1 · Lightning session A: Automation and AI
A community speaker said that at the time of the event (30 September 2026) WebMCP was not supported by all browsers but could be enabled for testing through browser flags.
Carlos Ortega · Day 1 · Lightning session A: Automation and AI
A community speaker said WebMCP has two kinds of tools: declarative ones, mostly HTML annotations such as the fields of a contact form, and imperative ones for other actions such as booking, filtering a catalogue, adding products to a cart, getting product specs or reordering.
Carlos Ortega · Day 1 · Lightning session A: Automation and AI
A community speaker summed up agent readiness in three layers: a good CLS improves how agents see content, schema, landmarks and ARIA how they understand it, and WebMCP how they interact with it.
Carlos Ortega · Day 1 · Lightning session A: Automation and AI
Kit items about WebMCP: their own words name it, or several of the claims they rest on do.
Try WebMCP to declare the actions a site offers to AI agents
Rests on 4 claims, 4 of them naming WebMCP; its own words name WebMCP
Also inglossary term WebMCP
Things named in the same claim, with the number of claims they share.