Yes, you should be able to add Open Graph Action support to your other extension in a few ways. For something as simple as "Reading" a page in another extension, that can be done without any code changes and just a little investigation. We've been helping users add Open Graph Action support for some standard things since support was added to the extension.
For deeper integration on specific activities in other extensions, you'd likely need to create an Open Graph plugin. We have multiple examples for the extensions we currently support, and the plugins are usually less than 100 lines. We've tried to make that process very easy, and can help if you had any questions. With an Open Graph plugin you can dynamically set the Open Graph information (title, description, image, etc) for any pages from that extension and then also create 'actions' which happen when a user uploads, edits, clicks, or 'does' something else on that page.
In general, our Open Graph action support was intended to be very extensible through our plugin system and we want users and other developers to create a lot of cool functionality with it!
Hope that helps,
Alex
Bespoke Component Integration
