com.cribalo/criba

up checked 2026-11-11T11:37:59.297Z

Unclaimed · Unverified

Publisher-provided title

criba: who is calling your MCP server

Publisher-provided description

Identify who calls your MCP server or A2A agent: declared identity vs observed behaviour.

Summary by lookupd

Lets an agent classify and identify visitors to an MCP server or website by declared identity versus observed request behaviour.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http criba https://criba.cribalo.com/mcp

Codex, remote (streamable-http)

codex mcp add criba --url https://criba.cribalo.com/mcp

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

{
  "mcpServers": {
    "criba": {
      "url": "https://criba.cribalo.com/mcp"
    }
  }
}

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

Publisher-provided text

identify_client Who a User-Agent and/or an MCP clientInfo.name claims to be, matched against criba's catalog of known MCP indexers, verifiers, A2A directories, AI crawlers, sca
classify_visitor Classify one visitor from its requests to your MCP server, A2A agent or website. Returns the declared identity, the observed behaviour class (acts-on-results, a
list_known_bots List criba's catalog of known agent-ecosystem bots, optionally filtered by category or protocol. Each entry has its id, name, category, URL, matching rules and

Shows this live status and links here; updates hourly.

[![lookupd status](https://lookupd.com/badge/com.cribalo/criba.svg)](https://lookupd.com/servers/com.cribalo/criba)