A2A agent

https://sitegpt.ai/.well-known/agent-card.json

curl -s https://sitegpt.ai/a2a \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "message/send",
    "params": {
      "message": {
        "role": "user",
        "parts": [{ "kind": "text", "text": "What does the Growth plan include?" }],
        "messageId": "msg-1"
      }
    }
  }'

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "kind": "message",
    "role": "agent",
    "messageId": "…",
    "contextId": "…",
    "parts": [{ "kind": "text", "text": "The Growth plan includes…" }]
  }
}

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "message/send",
  "params": {
    "message": {
      "role": "user",
      "parts": [{ "kind": "text", "text": "And how many chatbots does it allow?" }],
      "messageId": "msg-2",
      "contextId": "<contextId from the previous reply>"
    }
  }
}