A key is required

HTTP 401 · token-missing — ← all Webpath errors

This operation needs a key and none was sent.

How to recover. Send Authorization: Bearer or append ?token=.

Example response

{
  "type": "https://muse.as/a/webpath/errors/token-missing",
  "title": "A key is required",
  "status": 401,
  "detail": "Send Authorization: Bearer <key> or append ?token=<key>."
}

This page documents the token-missing error type returned in Webpath RFC 7807 application/problem+json responses. The machine-readable detail field carries a recovery hint you can show a user verbatim — see the Spec §12 and API Reference.