minFraud Legacy and Proxy Detection web services now return HTTP status codes for errors

The minFraud Legacy and Proxy Detection web services now return meaningful HTTP status codes for error conditions, so you can act on them in your monitoring or an internal proxy, without parsing the response body:

• 400 Bad Request for a malformed request
• 401 Unauthorized for a missing or invalid license key
• 402 Payment Required when your account is out of queries
• 403 Forbidden when your account does not have permission to use the service
• 5xx for a server error

The response body and its error-code strings are unchanged, and a valid IP that isn’t in our database still returns a 200 OK status (with a warning in the response body). Note that Proxy Detection now returns 400 Bad Request for a malformed request, such as a missing or invalid IP address, that previously returned 200 OK.

See the minFraud Legacy and Proxy Detection documentation for details.