const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.phaseo.app/v1/files', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "error": "error_type",
  "ok": false,
  "message": "Human-readable error message",
  "description": "Additional error details.",
  "generation_id": "G-abc123",
  "status_code": 502,
  "error_type": "system",
  "error_origin": "upstream",
  "reason": "all_candidates_failed",
  "attempt_count": 2,
  "failed_providers": [
    "google-ai-studio",
    "openai"
  ],
  "failed_statuses": [
    403,
    429
  ],
  "upstream_error": {
    "code": "PERMISSION_DENIED",
    "message": "The caller does not have permission.",
    "description": "<string>",
    "param": "<string>"
  },
  "failure_sample": [
    {
      "provider": "<string>",
      "type": "<string>",
      "status": 123,
      "upstream_error_code": "<string>",
      "upstream_error_message": "<string>",
      "upstream_error_description": "<string>",
      "upstream_error_param": "<string>",
      "upstream_payload_preview": "<string>",
      "retryable": true
    }
  ],
  "provider_failure_diagnostics": {
    "hint": "<string>",
    "provider": "<string>"
  },
  "routing_diagnostics": {
    "filterStages": [
      {
        "stage": "<string>",
        "beforeCount": 123,
        "afterCount": 123,
        "droppedProviders": [
          {
            "providerId": "<string>",
            "reason": "<string>"
          }
        ]
      }
    ]
  },
  "provider_candidate_diagnostics": {
    "totalProviders": 123,
    "supportsEndpointCount": 123,
    "candidateCount": 123,
    "droppedUnsupportedEndpoint": [
      "<string>"
    ],
    "droppedMissingAdapter": [
      {
        "providerId": "<string>",
        "endpoint": "<string>"
      }
    ]
  },
  "provider_enablement": {
    "capability": "<string>",
    "providersBefore": [
      "<string>"
    ],
    "providersAfter": [
      "<string>"
    ],
    "dropped": [
      {
        "providerId": "<string>",
        "reason": "<string>"
      }
    ]
  },
  "missing_pricing_providers": [
    "<string>"
  ],
  "provider_payment_required_provider": "openai",
  "provider_payment_required_support_notice": "Our upstream provider billing appears to be unavailable. If this persists, contact support.",
  "details": [
    {}
  ]
}