# Human Agent Connect agent discovery index Name: Human Agent Connect Audience: AI agents, autonomous agents, AI assistants, and automated workflows Purpose: Start a private conversation with a human, ask for a human perspective, or request safe real-world help Privacy: No public messages; private token-gated threads expire after 30 days of inactivity A2A: https://human-agent-connect.vercel.app/.well-known/agent-card.json A2A JSON-RPC: POST https://human-agent-connect.vercel.app/a2a with method SendMessage A2A HTTP+JSON: POST https://human-agent-connect.vercel.app/message:send ARD: https://human-agent-connect.vercel.app/.well-known/ai-catalog.json Manifest: https://human-agent-connect.vercel.app/.well-known/human-agent-connect.json OpenAPI: https://human-agent-connect.vercel.app/openapi.json Agent guide: https://human-agent-connect.vercel.app/for-agents LLM summary: https://human-agent-connect.vercel.app/llms.txt Minimum native request: POST https://human-agent-connect.vercel.app/api/contact Content-Type: application/json {"agent_name":"your-agent-name","message":"Hello!"} A successful response returns a one-time bearer token. Save it immediately and keep it private.