Replication Matter Editor
Adds a simple in-game editor that lets you assign and export Replication matter values to items directly as JSON.
⬇ Download on CurseForgeThe author built this one for Minecraft 1.21.1 on NeoForge. On other versions it may install and then do nothing.
Adds a simple in-game editor for the mod Replication by Buuz135 that lets you assign and export matter values to items directly as JSON.
Features
In-game GUI for editing Replication matter values
Automatically detects the item in your main hand
Supports all matter types:
- earth
- organic
- living
- nether
- ender
- metallic
- precious
- quantum
Currently:
- Export matter values as Replication JSON
- Copy JSON directly to clipboard
- Designed for modpack developers and datapack workflows
- Client-side utility (no gameplay changes)
To do:
- Remove/Change the selected item from overlap
- Tag support
- Multi-item selection & multi-export
How to Use
-
Hold the item you want to assign matter values to in your main hand
-
Press M to open the Replication Matter Editor
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Enter matter values in the provided fields
-
Choose an export option:
-
Confirm → JSON to save the file
-
Copy JSON to copy the output to clipboard
-
Note - JSON files are saved in the minecraft instance folder where it will auto generate the path file is this: minecraft\Instances\YOURCUSTOMPACK\extendedreplication\matter_values
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- 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: 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 replication_matter_editor-1.0.3.jar — drop this file into the mods folder
- Download size: 19 KB
- Download link checked 12 Sept 2026 — working
These come from our own check of the pack file, not from the source page.