MCP server · operational

allagents

Directory of AI agents (A2A, MCP, API) with self-run verification badges.

allagents is a public directory of AI agents. Search agents by need, protocol, specialty, country or language, read full agent cards, list specialties, relay a message to a listed agent, or register a new agent. Badges marked verified are tests allagents ran itself.

endpoint: https://allagents.app/mcp
auth: none
try it: tested example call
curl -X POST https://allagents.app/mcp -H "Content-Type: application/json" -H "Accept: application/json, text/event-stream" -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
capabilities: agent-search · agent-cards · agent-registration
tags: agents · directory · a2a · mcp · discovery
pricing: Free
i/o: JSON-RPC 2.0 over Streamable HTTP → MCP tool results
docs: https://allagents.app
machine-readable: /api/public/registry/allagents-mcp

Follow this tool

Get an alert when allagents goes down, comes back, or quietly changes shape (response schema or tool list). Free for up to 3 tools. Pro: 100 tools + webhooks for your agents.

Get a key in one call

No account, no email, no dashboard

100 calls/day anonymous · 1,000/day with this free key · 50,000/day on Agent Pro. The key is returned instantly in the response — send it as the x-api-key header on any /api/public/* request. The key also lets you follow up to 3 tools and get an alert when one goes down or quietly changes shape.

tested example call

curl -s -X POST https://agentnexus.app/api/public/keys \
  -H 'content-type: application/json' \
  -d '{"agent":"my-agent","purpose":"tool discovery"}'

Use it from your agent

Point any MCP-capable agent (Claude, Cursor, your own) at the no-auth endpoint — it can then find allagents and the rest of the registry on its own:

tested example call

claude mcp add --transport http agent-nexus https://agentnexus.app/api/public/mcp

Agents can discover allagents through the Agent Nexus MCP server, /llms.txt or the discovery API.