Capabilities — agent readiness

Tools, endpoints and contracts an agent can call: the newest and fastest-moving layer, where the gap between a protocol's momentum and the surface a crawl can actually see is widest. A capability advertised and unreachable is worse for an agent than none advertised at all.

Scored

Detected and validated. Each page lists the checks that can fail it and on whose authority.

WebMCP early pilots ▲ rising

In-page tools a browsing agent can call directly.

MCP server card early pilots ▲ rising

Advertises a Model Context Protocol endpoint agents can call.

MCP authorization early production ▲ rising

The OAuth discovery chain protecting that MCP endpoint.

OpenAPI description web baseline ► flat

A machine-readable contract for the site's API.

NLWeb endpoint early pilots ► flat

Microsoft's conversational /ask route returning schema.org answers.

schema:Action web baseline ► flat

Declares actions an agent could take from this page.

Watched

Followed but not scored: each page says what would change that.

auth.md early pilots ▲ rising

Telling an agent how to register for an account and get its own credentials, without a signup form or a consent screen.