With this mod, you can add custom things to the game via JSON, it is very easy, here is an example:
That file has examples for everything I currently support and it is in the format that the mod reads in :)
prints a list of aspects
prints the unlocalized name of fluids
prints information about TCon materials.
To use this mod, you need TTcore, you can get it here: http://ci.tterrag.com/job/ttCore/ and Tinker's Construct.
If you would like to show your support, I have a Patreon.
You are free to use my mod in a modpack! THOUGH you have to send me a message saying you are doing so!
And that is basically it!