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

# Content types

> How to set Content-Type and Accept headers

## Request and response formats

Set these headers on every request:

* `Content-Type`: format of the request body.
* `Accept`: format you want in the response.

## Common content types

| Content-Type       | Description                    |
| ------------------ | ------------------------------ |
| `application/json` | JSON-encoded request/response. |
| `text/plain`       | Plain text.                    |
| `text/xml`         | XML document.                  |

## Why it matters

Even when only one format is currently supported, the API uses these headers to
allow future expansion without breaking clients.

## Language selection

Some endpoints accept `Accept-Language` to localize human-readable strings.