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

# bad_request

> Malformed request

|                 |                   |
| --------------- | ----------------- |
| **HTTP status** | `400 Bad Request` |
| **Error code**  | `bad_request`     |

## What happened

The request was rejected before it reached the handler — typically malformed JSON, an unsupported content type, or a required query/path parameter that could not be parsed.

## How to fix

Inspect `detail` (and `errors` when present) for the exact reason, correct the request, and retry.