While that list is handy for sure, the OP's site also enables you to actually get the HTTP status code of your desires, since you can specify it in the request

While that list is handy for sure, the OP's site also enables you to actually get the HTTP status code of your desires, since you can specify it in the request URL path: http://codes.io/304 http://codes.io/304. This will return a `304 Not Modified` response, which can be helpful in writing testcode for your API service.