Errors

Errors use one JSON shape:

{
  "error": {
    "code": "INVALID_REQUEST",
    "message": "Invalid request"
  }
}

HTTP status	Code	Meaning
400	`INVALID_REQUEST`	Invalid parameter, range, body, or server reference.
401	`RAPIDAPI_UNAUTHORIZED`	Missing or invalid RapidAPI credentials.
403	`FEATURE_NOT_AVAILABLE`	Your plan does not include the endpoint or range.
404	`SERVER_NOT_FOUND`	The server is unknown or not public.
429	`RATE_LIMITED`	A rate or quota limit was reached.
500	`INTERNAL_ERROR`	An unexpected service error occurred.

Retry 429 and 500 with exponential backoff. Fix the request or credentials before retrying other errors.