Hey @Josh,
While there isn’t specific documentation about connection both plugins, there are some resources that might be quite helpful regardless. First and foremost is the documentation for Gravity Forms’ API, which lives inside a class called GFAPI. You can see some really great documentation for this API class here → http://inlinedocs.gravityhelp.com/class-GFAPI.html
Now the embarrassing part – the documentation for our own API is not nearly as good. Because our API class is so recent, at this time the best documentation for it is just the API class itself, and its methods and the in-code comments that accompany each class method.
You can find The Events Calendar’s API class here:
the-events-calendar/src/Tribe/API.php
The API class is called Tribe__Events__API – hopefully with both API classes you can put together something quite robust!
Cheers,
George