# HTTP Error Codes

### HTTP Error Codes

* **4XX** – Client errors (e.g., malformed requests). The issue lies with the request sent by the client.
* **410** – Request rate limit exceeded. Indicates a **hard rate limit break**.
* **418** – Returned when a client continues making requests after receiving a **429 (Too Many Requests)**. This will trigger **IP blocking**, with block durations increasing from **2 minutes up to 3 days** for repeated violations.
* **5XX** – Server errors. Indicates an internal issue on the API server.
* **504** – Gateway timeout. The API forwarded the request successfully, but **did not receive a response in time**.\
  ⚠️ Do **not** treat this as a failed operation. The execution status is **unknown** and may still be successful.

***

### Error Response Format

All endpoints may return an error in the following format:

```json
{
  "code": -1121,
  "msg": "Invalid symbol."
}
```


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