I went through the Flask OAuth api, and its pretty clear how to do authentication for a web app. The web app gets redirected to the authentication provider login page, where access is granted, and returns back to the web app with a token.
However, for web api scenarios, where a client is pre authorized to call the web api, the request will have a Bearer token along with the call. Is there any example on how to validate this token? I see apis like validate_access_token() in the OAuth2 library, but I cant see any examples where people use it for web apis.
I use Azure AD for authentication, and have created an AAD application, and am able to get a token from it through the adal package on the client side (with the clientId and clientKey from AAD). But I havent been able to authorize it yet on the web api side, because it seems most scenarios look at web app authentication and not web api scenarios. Any ideas on how to authenticate on server side?