Google Cloud

Momentum uses google secret manager to securely manage API keys. Since you have already created a firebase app, a linked google cloud account will automatically be created. You can use that or create a new one as per your convience. Use these steps to setup secret manager, and setup application default credentials for momentum to use in your local system. (Alternative documentation here) Once that is done - that's all you need to do for google account setup. Only a few more steps before you can get momentum up and running.