CurseForge · Minecraft mod
AccessTransformerJS
allow use accessTransformer in kubejs
Quick answer
Which AccessTransformerJS release should I use?
AccessTransformerJs-NeoForge-2101.1.1.jar targets 1.21.4, 1.21.3, 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is AccessTransformerJS required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does AccessTransformerJs-NeoForge-2101.1.1.jar need?
AccessTransformerJs-NeoForge-2101.1.1.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add AccessTransformerJS without breaking your instance.
Built for AccessTransformerJs-NeoForge-2101.1.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use AccessTransformerJs-NeoForge-2101.1.1.jar. It targets 1.21.4, 1.21.3, 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside AccessTransformerJs-NeoForge-2101.1.1.jar. It opens that exact file at the source.
About this project
What does AccessTransformerJS add?
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:

Project description from CurseForge.
Pick your setup
AccessTransformerJS by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.3
1 loader build1.21.2
1 loader build1.21.1
1 loader build1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
AccessTransformerJS versions and loaders
AccessTransformerJS-2001.1.0.jar
15 Mar 2025
AccessTransformerJs-NeoForge-2101.1.1.jar
9 Jan 2025
Looking for an older file? The official CurseForge project page is in Resources.