capabilities-txt-registry

io.github.capabilityhostprotocol/capabilities-txt-registryVersion 0.1.0

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

Status

Responds323 msNov 14, 2026, 14:47 UTCAnswered our handshake without sign-in.

We could not refresh it, so this page shows the last copy.

Data from the official MCP Registry, checked by run.zero. How we check

Streamable HTTP

https://capabilitiestxt.org/api/mcpResponds323 msNov 14, 2026, 14:47 UTC

No sign-in

claude mcp add --transport http capabilities-txt-registry https://capabilitiestxt.org/api/mcp

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Settings > Connectors > Add custom connector
Name: capabilities-txt-registry
Remote MCP server URL: https://capabilitiestxt.org/api/mcp

{
  "mcpServers": {
    "capabilities-txt-registry": {
      "url": "https://capabilitiestxt.org/api/mcp"
    }
  }
}

code --add-mcp '{"name":"capabilities-txt-registry","type":"http","url":"https://capabilitiestxt.org/api/mcp"}'

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3 tools

Tools of capabilities-txt-registry
	Description		Read-only	Idempotent	Open world
`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.	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.	Not declared	Not declared	Not declared	Not declared
`get_site`Get the full list of capabilities a site declares, by domain.	Get the full list of capabilities a site declares, by domain.	Not declared	Not declared	Not declared	Not declared
`list_sites`List every site that publishes a conformant capabilities.txt, with its grade and capability count.	List every site that publishes a conformant capabilities.txt, with its grade and capability count.	Not declared	Not declared	Not declared	Not declared

Registry status: Active
Published: Jun 26, 2026
Updated: Jun 26, 2026
Website: https://capabilitiestxt.org/⁠ (opens in a new tab)
Repository: https://github.com/capabilityhostprotocol/capabilities-txt⁠ (opens in a new tab)
Categories (suggested): Search and webSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared