Sublime uses standard HTTP response codes to indicate the success or failure of an API request. In general: Codes in the 2xx range indicate success. Codes in the 4xx range indicate an error that failed given the information provided (e.g., a required parameter was omitted, etc.). Codes in the 5xx range indicate an error with Sublime's servers (we try to make these as rare as possible).

HTTP Status CodeSummary
200 - OKEverything worked as expected.
400 - Bad RequestThe request was unacceptable, often due to missing a required parameter.
401 - UnauthorizedInvalid API key provided.
403 - ForbiddenThe API key doesn't have permissions to perform the request.
404 - Not FoundThe requested resource doesn't exist.
429 - Too Many RequestsEither too many requests hit the API too quickly, or exceeded allotted rate limit.
500, 502, 503, 504 - Server ErrorsSomething went wrong on Sublime's end. (We try to make these rare.)