Hey everyone! Long time no see. I made a mod that allows YOUR mods to support custom JSON tags from OTHER PEOPLE's mods. Let's say you added a plethora of cool features to your mod, and wished others could use them from JSON alone, just add this library and, boom, custom JSON.
It's better explained in the README but that's the gist of it.
It does not break the game if the mod uses the library but the library is not installed in the game, so it should be (for the most part) foolproof. Here's the repo: https://github.com/ThePythonGuy3/CustomJsonLib
Feel free to ask any questions as to how to make it work (but please ping me if you do so because I don't always check this server :p)