mcpbeat

Capabilities Txt Registry MCP Server

io.github.capabilityhostprotocol/capabilities-txt-registry
not responding

Capabilities Txt Registry is listed as active in the registry but did not answer our last check. It exposes 3 tools. Last commit 30 Jun 2026.

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

Uptime history 42 hours of history · worst hour 0%
42 hours agonow
0.0%
Uptime 24h
0 of 91 checks
3
Tools
read from the server
210 ms
Response time
average over 24h
0
Stars
last commit 30 Jun 2026

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.

run in your terminal
claude mcp add capabilities-txt-registry --transport http https://capabilitiestxt.org/api/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "capabilities-txt-registry": {
      "url": "https://capabilitiestxt.org/api/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.capabilities-txt-registry]
url = "https://capabilitiestxt.org/api/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "capabilities-txt-registry": {
      "url": "https://capabilitiestxt.org/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "capabilities-txt-registry": {
      "url": "https://capabilitiestxt.org/api/mcp"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

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

Endpoints

URLTransportStateLatencyChecked
https://capabilitiestxt.org/api/mcp streamable-http answering 210 ms 13 min ago

Capabilities Txt Registry — questions

Answers built from our own checks of this server.

What can Capabilities Txt Registry do?
It exposes 3 tools, read directly from the server on our last check. Among them: discover_capabilities, get_site, list_sites. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Capabilities Txt Registry working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 210 ms. The bar chart above shows every period we have measured.
The registry lists Capabilities Txt Registry as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Capabilities Txt Registry?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Capabilities Txt Registry need an API key?
No. Capabilities Txt Registry completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.
Is Capabilities Txt Registry open source?
Yes — it is published under the NOASSERTION licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.