How to Connect existing Gen AI Agent Builder deployed via App Engine to Firebase

[MindTD]

Background - successful build & deploy vertex ai-search widget using App Engine without user authentication. Now I want to add login/registration, retrofit using Firebase. 

https://cloud.google.com/appengine/docs/standard/python3/building-app/adding-firebase

"Add Firebase to your existing Google Cloud project using the Add project tool in the Firebase console". 

Road block - at Firebase Console, cannot find a way to Add Domain of my existing App (e.g., PROJECT-ID.uc.r.appspot.com). Select Add App / Register App, cannot figure how to enter the App Engine URL.

https://cloud.google.com/appengine/docs/standard/python3/building-app/adding-firebase#adding_firebas...

Q: am I getting off track on adding Firebase to an already deployed App Engine app?

Thanks in advance for pointers /workaround this road block.

[maricarp · Accepted solution]

Hello @MindTD ,

Looking at the documentation, specifically at Step #3, it says here that your domain needs to be authorized for OAuth redirects in order for Firebase to authenticate properly. Have you completed this step? If not, you may check this documentation to help you set up OAuth. Once this is done, you may proceed entering the domain of your app on App Engine, excluding the http:// prefix.

Hope this helps.