Nefesh Human State Agent (A2A)
A2A agent served from the MCP host: card at https://mcp.nefesh.ai/.well-known/agent-card.json, JSON-RPC 2.0 endpoint at POST https://mcp.nefesh.ai/a2a supporting message/send, message/sendStream, tasks/get and tasks/cancel. Four skills — get-human-state, ingest-signals, get-trigger-memory, get-session-history — the same capability set as the MCP tools. Authentication is X-Nefesh-Key or Authorization: Bearer; an unauthenticated message/send returns a completed Task whose artifact carries the auth error rather than a JSON-RPC error. The card is 0.2-era in shape (schemaVersion/agentVersion/authSchemes, no protocolVersion) and grades flavored against A2A 1.0.0.