错误与调试

{
  "generation_id": "G-abc123",
  "status_code": 502,
  "error": "upstream_error",
  "error_type": "system",
  "error_origin": "upstream",
  "reason": "all_candidates_failed",
  "description": "Provider \"google-ai-studio\" failed with HTTP 403 for endpoint \"responses\" on model \"google/gemini-2.5-pro\".",
  "attempt_count": 1,
  "failed_providers": ["google-ai-studio"],
  "failed_statuses": [403],
  "provider_failure_diagnostics": {
    "category": "provider_access_missing",
    "hint": "The provider account appears not to have access to this model or feature yet. Verify account entitlements and provider-side access.",
    "provider": "google-ai-studio"
  },
  "upstream_error": {
    "code": "PERMISSION_DENIED",
    "message": "The caller does not have permission.",
    "description": null,
    "param": null
  },
  "failure_sample": [
    {
      "provider": "google-ai-studio",
      "type": "upstream_non_2xx",
      "status": 403,
      "upstream_error_code": "PERMISSION_DENIED",
      "upstream_error_message": "The caller does not have permission.",
      "upstream_error_description": null,
      "upstream_error_param": null,
      "upstream_payload_preview": "{\"error\":{\"status\":\"PERMISSION_DENIED\"}}",
      "retryable": false
    }
  ]
}

{
  "generation_id": "G-unsupported123",
  "status_code": 400,
  "error": "unsupported_model_or_endpoint",
  "description": "No provider is currently routable for endpoint \"responses\" on model \"example/model\".",
  "provider_candidate_diagnostics": {
    "totalProviders": 3,
    "supportsEndpointCount": 2,
    "candidateCount": 1,
    "droppedUnsupportedEndpoint": ["provider-a"],
    "droppedMissingAdapter": [
      {
        "providerId": "provider-b",
        "endpoint": "responses"
      }
    ]
  },
  "provider_enablement": {
    "capability": "responses",
    "providersBefore": ["provider-b", "provider-c"],
    "providersAfter": ["provider-c"],
    "dropped": [
      {
        "providerId": "provider-b",
        "reason": "pricing_missing"
      }
    ]
  },
  "routing_diagnostics": {
    "filterStages": [
      {
        "stage": "provider_routing_status",
        "beforeCount": 1,
        "afterCount": 0,
        "droppedProviders": [
          {
            "providerId": "provider-c",
            "reason": "provider_status_not_ready"
          }
        ]
      }
    ]
  }
}

{
  "debug": {
    "enabled": true,
    "return_upstream_request": true,
    "return_upstream_response": false,
    "trace": true,
    "trace_level": "summary"
  }
}