Unsupported media type

What it means

The request Content-Type is not supported.

Example detail messages returned with this error:

• Use application/x-www-form-urlencoded or application/json.

What to do

See detail for the specific cause.

Response shape

All fremforge API errors are RFC 9457 problem+json:

{
  "type": "https://docs.frem.sh/reference/api/errors/unsupported-media-type",
  "title": "Unsupported Media Type",
  "status": 415,
  "detail": "..."
}

Branch on type, not on title or detail - those are human-readable and may be reworded.