> ## Documentation Index
> Fetch the complete documentation index at: https://dexbuilder.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Error Codes

> Event Contracts API error handling.

Applications should handle both HTTP status codes and returned API error details.

| Status | Meaning |
| - | - |
| `2xx` | Request succeeded |
| `400` | Invalid request or parameter |
| `401` | Authentication failed |
| `403` | Permission denied |
| `429` | Rate limit exceeded |
| `5xx` | Server-side error |

Preserve the returned request or trace identifier when troubleshooting.


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