JEI Integration All JEI events are client sided and so go in the client_scripts folder Sub-types onEvent('jei.subtypes', event => { event.useNBT('example:item') event.useNBTKey('example:item', 'type') }) Hide Items & Fluids onEvent('jei.hide.items', event => { event.hide('example:ingredient') }) onEvent('jei.hide.fluids', event => { event.hide('example:fluid') }) Add Items & Fluids onEvent('jei.add.items', event => { event.add(Item.of('example:item', {test: 123})) }) onEvent('jei.add.fluids', event => { event.add('example:fluid') }) Add Information onEvent('jei.information', event => { event.add('example:ingredient', ['Line 1', 'Line 2']) }) Hide categories onEvent('jei.remove.categories', event => { console.log(event.getCategoryIds()) //log a list of all category ids to logs/kubejs/client.txt event.remove('create:compacting') })