The Zūm Rails API uses the following http error codes:

Error CodeMeaning
400Bad Request -- Your request is invalid.
401Unauthorized -- Your API key is wrong.
403Forbidden -- The endpoint requested is hidden for administrators only.
404Not Found -- The specified endpoint or entity could not be found.
429Too Many Requests -- You reached your quota
500Internal Server Error -- We had a problem with our server. Try again later.