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

# Error Codes

Standard HTTP error codes are used.

### Common Errors

\| Code | Meaning | Description |

\|------|------------|-------------|

\| **400** | Bad Request | Invalid parameters |

\| **401** | Unauthorized | Missing/invalid API key |

\| **404** | Not Found | Wrong endpoint/model |

\| **429** | Rate Limit | Too many requests |

\| **500** | Server Error | Internal issue |

### Example Error

**json**

```json
{
  "error": {
    "message": "Rate limit exceeded",
    "type": "rate_limit_error",
    "code": 429
  }
}
```