Facebook Api Messenger subscribe webbook programmatically

Question

In this Facebook docs page we learn how to create a bot for receiving and sending messages through a Facebook Page.

Is there a way to connect between a webhook and a page programatically and not manually?

If my product is a generic bot for Facebook Messenger, I want to be able to register him to pages without asking my clients to grant me an admin permission to their Facebook Page.

Answer 1

In case anyone else still has this problem, in addition to using the app subscription edge and the page subscription edge, you also need the following permissions: manage_pages, pages_messaging, read_page_mailboxes. The page was not showing up for me in the app > messenger settings until I added the read_page_mailboxes permission.