We're getting a few community contributions out this week into Revert in a very hands-on way.
This way we'd learn how to best optimise the product to allow for community contributed integrations at scale and the tutorial will be basis these learnings.
Given the tiny number of APIs supported today, encouraging the community to add more APIs seems like it should be the #1 priority.
I didn't see any sort of tutorial on adding new API's on either the homepage or the GitHub readme.