This project aims at making forge's updateJSONURL as easy as possible.
It is a web API that will return updateJSONURL compatible JSON files for your mod, using CurseForge as the source
to determine available versions.
All you need to do is specify the endpoint in your updateJSONURL, like this:
# ...
displayName="Magic Feather"
# 284745 is the modId, you can find it on your CurseForge page.
updateJSONURL="https://mc-curse-update-checker.herokuapp.com/284745"
# ...This project is MIT, feel free to self-host your own version!