Replication Extended Registry – Data & scripting

This mod ships built-in matter value recipes (Replication) for many mods and provides an external scripting system to register or override matter values without editing the mod.

Built-in matter values (datapack)

Under data/rep_ext_reg/recipe/matter_values/items/ the mod includes matter value definitions grouped by mod. These are standard Replication replication:matter_value recipes and are loaded with the game.

Mods included

Actually Additions
Advanced AE
Applied Energistics
Applied Flux
Applied Mekanistics
Aquaculture
Ars Nouveau
Bumblezone
Cataclysm
Corail Tombstone
Create
Deeper Darker
Draconic Evolution
Ender IO
Evilcraft
Extended AE2
Hostile Network
Ice and Fire
Immersive Engineering
Industrial Foregoing
Just Dire Things
Mahoutsukai
Megacells
Mekanism
Mekanism Generator
MIFA
Oritech
Pneumaticcraft
Powah
Productive Bees
Reliquary
Roots Classic
Sophisticated Backpack
Supplementaries
Synergy
XNet
Xycraft

(Folder names under matter_values/items/ use snake_case (e.g. ars_nouveau, deeper_darker).)

Scripting system (external scripts)

Besides the built-in data, rep_ext_reg can load register scripts from a configurable folder. Those scripts are JSON files that assign matter values to items (or item tags) and are applied after Replication’s calculation, so you can add or override values without changing the mod or the datapack.

Path: Set in mod config → dev → externalScriptsPath. Default: kubejs/external_scripts/rep_ext_reg.
Format: Each JSON file must have "type": "rep_ext_reg", optional "aggressive" (override existing values), and an "entries" array. Each entry has:
- res: list of item IDs ("minecraft:tnt") and/or tags with # ("#c:ingots/lead"). Multiple IDs in one entry share the same matter definition.
- mat: list of matter type → amount, e.g. [{"replication:earth": 10}].
When: Scripts are loaded on server start and on /reload; values are injected once Replication has finished its matter calculation.

When the scripts folder is created (or when the mod runs), it auto-generates a README in that folder with the full format description and examples. Create the folder, run the game once, and use the generated README.md there as reference.