io.github.capabilityhostprotocol/capabilities-txt-registry

up checked 2026-11-11T03:39:07.886Z

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Publisher-provided description

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

Summary by lookupd

Search and look up sites and the capabilities they declare in the capabilities.txt registry, by keyword, domain, or category.

Install

Claude Code, remote (streamable-http)

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

Codex, remote (streamable-http)

codex mcp add capabilities-txt-registry --url https://capabilitiestxt.org/api/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

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

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (3 tools)

Publisher-provided text

• 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
• 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.

Details

• Version: 0.1.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 681 ms
• First indexed: 2026-11-01T09:22:54.838Z
• Last seen in registry: 2026-11-01T09:22:54.838Z
• Repository: https://github.com/capabilityhostprotocol/capabilities-txt
• Website: https://capabilitiestxt.org

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