HTTP response codes
Overview of the User.com API
HTTP response status codes indicate whether a specific HTTP request has been successfully completed. Responses are grouped in five classes: informational responses, successful responses, redirects, client errors, and servers errors.
All error responses are in the following format, delivered with the corresponding status code:
| Error Response | Description |
|---|---|
| 400 Bad Request | The request was incorrect, please make sure that passed arguments are matching format in method’s documentation. |
| 401 Unauthorized | Unauthorized. You attempt to authenticate with an invalid username or API key. |
| 403 Forbidden | Forbidden. Your request is not allowed. |
| 404 Not Found | Not Found. You attempt to request a resource which doesn’t exist. |
| 429 Too Many Requests | Too many requests. You have reached a rate limit. |
| 500 Internal Server Error | Internal Server Error. Something unexpected happened on our end. Please try again or contact support. |
| 502 Bad Gateway | The server, while acting as a gateway or proxy, received an invalid response from an inbound server it accessed while |
| 504 Gateway Timeout | The server, while acting as a gateway or proxy, did not receive a timely response from an upstream server it needed to |