HTTP 401
invalid_api_keyInvalid API key
The supplied API key is invalid, expired, or revoked.
Resolution
Create or rotate a key in the developer portal.
Response handling
Keep the response's request_id for diagnostics. Retry only transient 429 and 503 responses, using the rate-limit headers and exponential backoff with jitter. Correct 400, 401, and 403 requests before retrying.