Looking for logging into the Web Api Default Route site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Web Api Default Route site. After that you can login as usual with your login credentials.
https://docs.microsoft.com/de-de/aspnet/web-api/overview/web-api-routing-and-actions/routing-in-aspnet-web-api
https://stackoverflow.com/questions/11172212/how-to-change-default-route-in-asp-net-web-api
https://teamtreehouse.com/library/defining-a-default-api-route
https://gist.github.com/nasrulhazim/25948dbf1f3a7d378bb5fe0463b49578
https://laravel.com/docs/5.7/middleware
https://devdocs.magento.com/guides/v2.3/get-started/authentication/gs-authentication.html