key_required

The key_required Problem means: the Offer requires a Key, and the call presented none.

Answer

Status	Title
401	Unauthorized

JSON

{
  "type": "about:blank",
  "title": "Unauthorized",
  "status": 401,
  "detail": "What went wrong, in words.",
  "code": "key_required"
}

Send the Key as X-Api-Key, or as Authorization: Bearer <key>.