Mono uses conventional 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 our servers (these are rare).
400 - Bad Request
The request was unacceptable, often due to missing a required parameter.
401 - Unauthorized
No valid API key provided.
402 - Request Failed
The parameters were valid but the request failed.
403 - Forbidden
The API key doesn't have permissions to perform the request.
404 - Not Found
The requested resource doesn't exist.
409 - Conflict
The request conflicts with another request (perhaps due to using the same idempotent key).
429 - Too Many Requests
Too many requests hit the API too quickly. We recommend an exponential backoff of your requests.
500, 502, 503, 504 - Server Errors
Something went wrong on Mono's end. (These are rare.)
200 - OK
Everything worked as expected 😊
Updated over 1 year ago