Various Guides for how to use the Facebook News Indexing API.
The Add HTML Metadata Tags to provide more details about an article including content type, subscription requirements, and more.
The Get a System User Access Tokens guide describes how to create a System User in your Business Manager and how to get a System User Access Token.
The Manage your Indexed Articles guide describes how to:
The Publish Your Indexed Article guide describes how to publish your indexed article on the Facebook News Tab.