ModsJava
KubeJS Library (26.1.2, 1.20.1) – Customize Modpack or Server with JavaScript
Java mod listed for Minecraft 1.20. Downloads from the MC Java Mods app on Android.
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KubeJS Library lets you create scripts in JavaScript language to manage your server. This mod adds new blocks and items, change recipes, add custom handlers for quest mods and more.
How to use:
- Run the game with mod installed once. It should generate kubejs folder in your minecraft directory with example scripts. startup scripts only get run once when the game loads. Those are for registering items, setting up configs etc. Server/data scripts are loaded when you join a world, those are better for things like clearlag, displaying custom login messages and world/player related things in general.
- You can use /reload. Note: Not everything is reloadable. Some things require you to restart game, some only world, some work on fly.
KubeJS Library Download Links
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
File checked by MCModsHub
- Downloads as 2534.mcaddon
- Download size: 2.1 MB
- Download link checked 26 Sept 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.