title: Firebase authenticated requests to Google App Engine
body: <p>I currently have some routes in Google App Engine's app that are protected using the <a href="https://cloud.google.com/appengine/docs/standard/python/oauth/#users_api" rel="nofollow noreferrer">Users API</a> in Google App Engine. I've now been asked to support users that do not have a Google account.</p>
  
  <p>It seems to me Firebase auth is the tool I need, but I can't figure out exactly how to integrate it:</p>
  
  <ul>
  <li>I have made a login page, with the <a href="https://github.com/firebase/firebaseui-web" rel="nofollow noreferrer">drop in auth solution</a>, that redirects to one of my protected routes.</li>
  <li>I expected the request for that page (after the redirection) to contain a token I could check in Google App Engine.</li>
  <li>I know the initial auth step worked, because if I check Firebase auth on the client side on that new page, it works:</li>
  </ul>
  
  <pre><code>firebase.auth().onAuthStateChanged(console.log); // prints my email
  </code></pre>
  
  <p>Is there no way for the http requests to include the token so that I can check them server side?</p>
  
  <p>Thanks!</p>