{
  "result": "<unknown>",
  "cost": 123,
  "latency": 123,
  "operation": "<string>",
  "api": "<string>",
  "upstream_status": 123,
  "error": {
    "code": "<string>",
    "message": "<string>"
  }
}

{
  "error": "<string>",
  "accepts": [
    {
      "scheme": "<string>",
      "network": "<string>",
      "maxAmountRequired": "<string>",
      "resource": "<string>",
      "description": "<string>",
      "mimeType": "<string>",
      "payTo": "<string>",
      "maxTimeoutSeconds": 123,
      "asset": "<string>",
      "extra": {
        "name": "<string>",
        "version": "<string>"
      }
    }
  ],
  "x402Version": 123
}

{}