Minecraft
You can use GroovyScript to modify a number of vanilla recipes and values.
GroovyScript uses IIngredients to refer to an item, fluid, ore dictionary, other Ingredients, or list of any of the above.
See how to access Items for use in other compat, and modify their publicly available values.
Learn what a Resource Location is, and how Minecraft uses it.
Edit vanilla crafting recipes via Crafting. Includes a fully featured Recipe Builder to make editing recipes faster.
Edit smelting recipes via Furnace.
Edit the Ore Dictionary via Ore Dictionary.
Edit loottables via the Loot compat.
Add custom tooltips to items via the Tooltip compat.
Listen to and cancel events via the Event compat.