AccessTransformerJS
Java mod listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.
I don't know my version or loader
allow use accessTransformer in kubejs.
Access Transformers (ATs for short) allow for widening the visibility and modifying the flags of classes, methods, and fields. They allow modders to access and modify otherwise inaccessible members in classes outside their control -- NeoForge Doc
see Access Transformers | NeoForged docs
Start the game once after installing this mod.
Every time you modify accesstransformer. cfg, you need to restart the game for it to take effect
see kubejs/accesstransformer.cfg to use it
For safety reasons, in the latest version, class filters have been added, which will not allow you to widen all classes that kubejs or other mods do not allow to load, including the types of fields and function return values..
example:
result:
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20.1, 1.21.4, 1.21.3
- 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: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as AccessTransformerJs-NeoForge-2101.1.1.jar — drop this file into the mods folder
- Download size: 10 KB
- Download link checked 19 Oct 2026 — working
These come from our own check of the pack file, not from the source page.