> For the complete documentation index, see [llms.txt](https://developers.oxylabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.oxylabs.io/products/web-unblocker/response-codes.md).

# Response Codes

<table><thead><tr><th width="129.59895833333331">Code</th><th>Status</th><th>Description</th></tr></thead><tbody><tr><td><code>200</code></td><td><code>OK</code></td><td>All went well, the request succeeded.</td></tr><tr><td><code>400</code></td><td><code>Multiple error messages</code></td><td>Wrong request structure. It could be a misspelled parameter or an invalid value. The response body will have a more specific error message.</td></tr><tr><td><code>401</code></td><td><p><code>Authorization header not provided</code> <code>Invalid authorization header</code></p><p><code>Client not found</code></p></td><td>The authorization header is missing, or your login credentials are incorrect.</td></tr><tr><td><code>403</code></td><td><code>Forbidden</code></td><td>Your account does not have access to this resource on the target website.</td></tr><tr><td><code>404</code></td><td><code>Not Found</code></td><td>The target website server understands the request but refuses to authorize it.</td></tr><tr><td><code>408</code></td><td><code>Timeout</code></td><td>The request timed out.</td></tr><tr><td><code>429</code></td><td><code>Too many requests</code></td><td>You have exceeded the rate limit.</td></tr><tr><td><code>500</code>, <code>502</code>, <code>503</code></td><td><code>Internal Server Error</code></td><td>We're experiencing some issues on our side. Please try again a bit later. We're probably aware of the issues, but you can give us a shout and report it anyway.</td></tr><tr><td><code>550</code></td><td><code>Faulted After Too Many Retries</code></td><td>Something went wrong, and we failed the job you submitted. You can try again at no extra cost, as we don't charge you for faulted jobs. If that doesn't work, please get in touch with us.</td></tr></tbody></table>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://developers.oxylabs.io/products/web-unblocker/response-codes.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.