Do you need a business subscription to use the API for this kind of operations? https://help.appsheet.com/integrations/api/example-copying-newly-added-records
Same question… Do I?
The normal use of integrations is to connect your app with external services. In fact, the API is used specifically for this purpose. Yes, the API and integrations require a business subscription.
At the moment, we lack an action that can automatically add a new row and populate it. We only have actions that add rows through UI. So this article you reference provides an awkward (and short-term) workaround — use an outbound webhook message back to our API endpoint.
Very soon, we’ll provide this as a native action and then it won’t involve the API.