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401 Unauthorized · type authentication When it happens
  • There’s no Authorization header, or it doesn’t start with Bearer .
  • The key is truncated or mistyped. Every key carries a checksum, so a typo is caught straight away.
  • The key doesn’t exist, or its prefix doesn’t match its mode.
What to do Check you’re sending the whole key, exactly as it was shown when it was created, as Authorization: Bearer bl_live_.... A lost key can’t be recovered: an agency admin can revoke it and create a new one under API Keys in the portal.

Example

401 Unauthorized
See all error codes, or how to handle errors.