---
title: "Unsupported media type"
description: "Auto couldn't read the body because it wasn't sent the way Auto expects. A body must be JSON, encoded as UTF-8, and not compressed."
url: "https://on.auto/problems/unsupported_media_type"
last_updated: "2026-11-10T14:41:54+00:00"
---

# Unsupported media type

## What it means

Auto couldn't read the body because it wasn't sent the way Auto expects. A body must be JSON, encoded as UTF-8, and not compressed.

## What to do

Read the problem's `detail` first. It says what happened to this request.

*   Send the body with `Content-Type: application/json`, encoded as UTF-8.
*   Don't compress it: leave out `Content-Encoding`, or set it to `identity`.

## Technical details

*   Type: `https://on.auto/problems/unsupported_media_type`
*   Status: 415
*   Reason: `unsupported_media_type`

[Responses and errors](https://on.auto/docs/reference/http#responses-and-errors) in the HTTP API reference has the full detail. [Problem types](https://on.auto/problems/) lists every type.

## Sitemap

See the [full documentation and product sitemap](https://on.auto/sitemap.md) for related pages.