@Tayfun FYI Google Apps Script lets you write a function bound to the sheet (or standalone) and deploy it as a Web App. That gives you a public HTTPS URL that responds to GET/POST. Your automation hits that one endpoint, and the script handles the read-modify-write server-side. A script needs to contain a doGet(e) or doPost(e) function that returns an HtmlOutput or TextOutput object to be published as a web app, and request parameters are passed via the e event parameter.