{
  "id": "prod-cb-01",
  "prompt": "Show me the billing service topology again.",
  "reason": "circuit_breaker",
  "expect": { "no_tool": true },
  "history": [
    {
      "role": "assistant",
      "tool_calls": [
        {
          "name": "read_architecture_yaml",
          "arguments": "{\"componentId\": \"payment-api\"}"
        }
      ]
    },
    {
      "role": "tool",
      "content": "{\"error\": \"Timeout\", \"message\": \"network timed out\"}"
    },
    {
      "role": "assistant",
      "tool_calls": [
        {
          "name": "read_architecture_yaml",
          "arguments": "{\"componentId\": \"payment-api\"}"
        }
      ]
    },
    {
      "role": "tool",
      "content": "{\"error\": \"Timeout\", \"message\": \"network timed out again\"}"
    }
  ]
}