How to make Google API calls from inside Node.js: https://developers.google.com/sheets/api/quickstart/nodejs
Step 1: a: https://console.developers.google.com/flows/enableapi?apiid=tagmanager.googleapis.com b: https://console.developers.google.com/apis/credentials/consent Email address, then Product name shown to users, then Save. c: https://console.developers.google.com/apis/credentials Select OAuth client ID, then Other, then Name, then Create. d: Download JSON, rename to client_secret.json
Step 2: ... WIP