Knoma 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 requirement parameter is missing). Codes in the 5xx range indicate an error with Knoma's servers.

HTTP Status code

Reason

200 - OK

Everything worked as expected.

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

Too many requests have hit the API too quickly. We recommend an exponential backoff of your requests.

500, 502, 503, 504 - Server Errors

Something went wrong on Knoma's end.