Minecraft's modding ecosystem thrives on extensibility, and KubeJS Additions Mod pushes that idea further by expanding what's possible with KubeJS scripting. It introduces new events and functions for JEI integration, Jade tooltip customization, and Architectury/Fabric event handling — giving mod developers and pack creators significantly more control over gameplay logic through JavaScript files. With over 1.2 million downloads on Modrinth, it has become a go-to library for KubeJS power users looking to extend their scripting capabilities beyond the defaults.
Key Features
- Custom JEI Recipe Categories — Create entirely new recipe categories in JEI using
JEIEvents.registerCategories. Define the category title, background, icon, and set up callbacks for recipe validation (verifyRecipe()), recipe lookup handling (handleLookup()), and custom rendering (renderPainfulBlocks()). - Custom JEI Recipes — Add your own recipes to JEI categories via
JEIEvents.registerRecipes. The mod includes an example "Painful Blocks" category featuring items like cactus, stick, lava, and sugar to demonstrate the system. - Jade/WAILA Tooltip Integration — Full integration with Jade's WAILA Plugin API lets you customize tooltip information for specific blocks. Use
WailaCommonRegistrationEventJSat startup to register block data providers, andWailaClientRegistrationEventJSon the client side to define tooltip rendering logic. An included example adds brushing result displays for Brushable Blocks. - Architectury & Fabric Event Listening — Listen to any Architectury or Fabric event through proxy classes. Register events using
ArchEvents.registry(startup only) and handle them across different contexts withArchEvents.handleStartup(),ArchEvents.handleClient(), andArchEvents.handleServer().
Screenshots
How to Install
- Download and install Minecraft Forge or Fabric API for your Minecraft version.
- Install KubeJS as it is the base mod required for this addon to function.
- Download KubeJS Additions Mod for the matching Minecraft version and mod loader below.
- Place the downloaded
.jarfile into your.minecraft/modsfolder. - Launch Minecraft and verify the mod loads correctly in the mod list.
Requirements
| Mod Loader | Dependencies | Minecraft Versions |
|---|---|---|
| Forge, Fabric | Minecraft Forge, Fabric API | 1.20.1, 1.20, 1.19.2, 1.18.2, 1.16.5 |
Pros & Cons
Pros
- Significantly extends KubeJS scripting with JEI, Jade, and event handling capabilities
- Supports both Forge and Fabric across multiple Minecraft versions
- Open-source under MIT license with active maintenance (last updated March 2025)
- Well-documented examples included for each feature (Painful Blocks, Brushable Blocks)
- Large community adoption with over 1.2 million downloads
Cons
- Requires KubeJS as a dependency — not a standalone mod
- Targeted at developers and advanced pack creators; steep learning curve for beginners
- Some features (JEI, Jade integration) only useful if those mods are also installed
Download
Always download mods from official sources to stay safe.
FAQ
Do I need KubeJS installed to use KubeJS Additions?
Yes, KubeJS is a required base mod. KubeJS Additions is an addon that extends KubeJS with new events and functions — it does not work on its own.
Can I use KubeJS Additions to add custom recipes to JEI?
Yes, the mod provides JEIEvents.registerCategories and JEIEvents.registerRecipes events that let you create entirely new JEI recipe categories and populate them with custom recipes through JavaScript files.
Is KubeJS Additions available for both Forge and Fabric?
Yes, the mod supports both Forge and Fabric mod loaders across Minecraft versions 1.16.5, 1.18.2, 1.19.2, 1.20, and 1.20.1.
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