Capabilities Txt Registry

io.github.capabilityhostprotocol/capabilities-txt-registry

Discover what websites across the agentic web can do — query the capabilities.txt registry.

healthy

status

tools exposed

2184ms

connect latency

6d40eba06f61

schema fingerprint

Tools (3)

discover_capabilities

Search the capabilities.txt registry for sites that can do something — by capability id, keyword, or category. Returns matching capabilities with the site that offers them and its conformance grade. To invoke, fetch that site's /capabilities.txt.

list_sites

List every site that publishes a conformant capabilities.txt, with its grade and capability count.

get_site

Get the full list of capabilities a site declares, by domain.

Endpoint

https://capabilitiestxt.org/api/mcp
Category: Other · Last checked: 2026-08-15T09:44:02Z

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How we measure →

What this means. This server responded to the MCP handshake and listed its tools without authentication. The schema fingerprint lets us flag if tool signatures silently change (schema drift) between checks.