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The Poelis Public API uses standard HTTP status codes and returns structured error responses to help you handle errors gracefully.

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Error Response Format

All error responses follow this structure: 
{
  "error": "error_code",
  "message": "Error message with details",
}

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Common Error Codes

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400 Bad Request

Invalid request parameters or malformed request body. 
{
  "error": "validation_error",
  "message": "Invalid request parameters",
}

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401 Unauthorized

Missing or invalid REST API key. 
{
  "error": "unauthorized",
  "message": "Invalid or missing API key"
}

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403 Forbidden

Valid REST API key but insufficient permissions to access the resource. 
{
  "error": "forbidden",
  "message": "Access denied to this resource"
}

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404 Not Found

Resource not found or not accessible. 
{
  "error": "not_found",
  "message": "Resource not found"
}

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405 Method Not Allowed

HTTP method not allowed for this endpoint. 
{
  "error": "method_not_allowed",
  "message": "Method Not Allowed"
}

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422 Unprocessable Entity

Validation error (e.g., invalid data format). 
{
  "error": "validation_error",
  "message": "Invalid data format",
}

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429 Too Many Requests

Rate limit exceeded. See Rate Limiting. Response includes Retry-After and X-RateLimit-* headers. 
{
  "error": "rate_limit_exceeded",
  "message": "Too many requests"
}

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500 Internal Server Error

Server-side error. If this persists, contact support. 
{
  "error": "internal_error",
  "message": "An internal error occurred"
}

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Request ID

All responses include an X-Request-ID header for tracking and debugging: 
X-Request-ID: 550e8400-e29b-41d4-a716-446655440000
Include this ID when contacting support about errors.

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Error Handling Best Practices

Check Status Codes

Always check HTTP status codes before processing responses

Log Request IDs

Log X-Request-ID for debugging and support requests

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Getting Help

If you encounter persistent errors:
  1. Check the X-Request-ID header in the error response
  2. Review the error message and details
  3. Contact support@poelis.com ↗︎ with:
    • The X-Request-ID
    • The error code and message
    • Steps to reproduce