Port WorldHandler to Minecraft 1.21.1 on NeoForge 21.1.225. This migrates the build from ForgeGradle to NeoForge ModDevGradle, updates mod metadata, replaces Forge API usage with NeoForge equivalents, updates registry access for 1.21.1, and avoids a client-startup advancement reload that can hang large modpacks. Validated with compileJava and full Gradle build.
World Handler - Command GUI

The World Handler provides a simple and easy to use graphical user interface for commands. It lets you create powerful and complex sub-commands alongside NBT-structures within seconds.
Features
- GUI for commands
- Client Commands: advancement, blockdata, clear, clone, difficulty, effect, enchant, fill, gamemode, gamerule, give, kill, recipe, scoreboard, setworldspawn, spawnpoint, summon, tag, team, time, trigger, weather, xp
- Server Commands: ban, deop, kick, op, pardon, save-all, save-off, save-on, whitelist
- World and player information
- /wh for a simplified /fill and /clone
- Expandable GUI with json files and child mods
- Client-side only
Download
Compiled binaries can be found on Curseforge
Installation
Download World Handler or build from source
Prerequisites
- Make sure Minecraft Forge is installed
Installer
- Run
WorldHandler-[VERSION]-UNIVERSAL.jar - Select your Minecraft directory
- Click Install
Manual
- Navigate to
..\.minecraft\mods - Copy the
WorldHandler-[VERSION]-UNIVERSAL.jar - Follow the steps below
Launcher Settings
- Select Forge as your profile
- Launch Minecraft
- Join a world or server
- Press
Vto open the World Handler
Configuration
≥ 1.14.4: Manual: ..\.minecraft\config\worldhandler\worldhandler.toml
1.13-1.14.4: Manual: ..\.minecraft\config\worldhandler.toml
1.9-1.12: Ingame: Mods -> World Handler -> Config (Manual: ..\.minecraft\config\worldhandler.cfg)
≤ 1.8: Manual: ..\.minecraft\config\worldhandler\[CONFIG].cfg
Installation with ModLoader (1.6.2)
- Navigate to
..\.minecraft\mods - Copy all files of the
World_Handler_GUI_[VERSION].zipinto the1.6.2ML.jar - Run Minecraft
Expansion
The World Handler GUI can also be expanded with custom tabs configured with json and javascript files or as a separate child mod in java.
A description on how to implement a custom json and javascript file can be found here and an example child mod can be found here.
FAQ
Q: Is this client-side only ?
A: Yes
Q: Can you port this to fabric, liteloader, rift, etc ?
A: No
Q: Can i add this to my modpack ?
A: Yes, as long as you give credit
Support
This mod will no longer be updated.
License
GNU GENERAL PUBLIC LICENSE Version 3