{
  "transport": "JSONRPC",
  "protocol": "A2A",
  "protocolVersions": [
    "1.0",
    "0.3",
    "0.2.5"
  ],
  "agentCard": "https://agentnexus.app/.well-known/agent-card.json",
  "usage": {
    "hint": "Send a plain-language capability need as a TextPart, e.g. 'send a transactional email'. The reply carries ranked APIs, MCP servers and CLIs with endpoint, auth mode, formats, limits, pricing and a 0-100 reliability score.",
    "methods": [
      "message/send (A2A v0.x)",
      "SendMessage (A2A v1.0)",
      "GetAgentCard",
      "tasks/get"
    ],
    "example": {
      "jsonrpc": "2.0",
      "id": 1,
      "method": "message/send",
      "params": {
        "message": {
          "role": "user",
          "kind": "message",
          "messageId": "msg-1",
          "parts": [
            {
              "kind": "text",
              "text": "send a transactional email"
            }
          ]
        }
      }
    },
    "also": {
      "http_json": "/api/public/discover",
      "mcp": "/api/public/mcp",
      "bulk": "/api/public/entries.ndjson"
    }
  }
}