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8 clients · secrets stay placeholders

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

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

[mcp_servers.capabilities-txt-registry]
url = "https://capabilitiestxt.org/api/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "capabilities-txt-registry": {
      "type": "remote",
      "url": "https://capabilitiestxt.org/api/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "capabilities-txt-registry": {
      "type": "http",
      "url": "https://capabilitiestxt.org/api/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=capabilities-txt-registry&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vY2FwYWJpbGl0aWVzdHh0Lm9yZy9hcGkvbWNwIn0%3D"
}

{
  "servers": {
    "capabilities-txt-registry": {
      "type": "http",
      "url": "https://capabilitiestxt.org/api/mcp"
    }
  }
}

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

extensions:
  "capabilities-txt-registry":
    enabled: true
    name: "capabilities-txt-registry"
    type: streamable_http
    uri: "https://capabilitiestxt.org/api/mcp"
    timeout: 300

Quality 79 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: discover_capabilities (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_sites (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_site (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
pass
tools.token_costabout 234 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

3 tools, about 234 tokens to load them all · tool set 9d87cc003b9a · checked 2026-10-20 10:03 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 90 / 100

provenance90

liveness100

freshness65

hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-100% ~updated-116d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://capabilitiestxt.org/api/mcp` streamable-http	none	yes	100%	266 ms	2025-11-25	2026-10-20

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.
`get_site`	Get the full list of capabilities a site declares, by domain.
`list_sites`	List every site that publishes a conformant capabilities.txt, with its grade and capability count.

Schemas: list_tools.

Similar MCP servers

More from io.github.capabilityhostprotocol

Official server.json

{
  "name": "io.github.capabilityhostprotocol/capabilities-txt-registry",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://capabilitiestxt.org/api/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.1.0",
  "repository": {
    "url": "https://github.com/capabilityhostprotocol/capabilities-txt",
    "source": "github"
  },
  "websiteUrl": "https://capabilitiestxt.org",
  "description": "Discover what websites across the agentic web can do — query the capabilities.txt registry."
}