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Only One Item project artwork

CurseForge · Minecraft mod

Only One Item

A Fabric mod that unifies duplicate items in modpacks by replacing them at the data loading stage, ensuring consistent recipes, loot tables, and faster world loading.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Only One Item release should I use?

Updated 9 months ago
Latest stable file oneitem-1.0.2.jar
Game version 1.20.1
Loader Fabric

Only One Item oneitem-1.0.2.jar targets 1.20.1 with Fabric. 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 Only One Item required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release Fabric
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does Only One Item oneitem-1.0.2.jar need?

oneitem-1.0.2.jar. Change the file and its required mods may change too.

No extra mods listed for this file

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 Only One Item without breaking your instance.

Built for Only One Item oneitem-1.0.2.jar. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use oneitem-1.0.2.jar. It targets 1.20.1 with Fabric; another release may have different loader, side or dependency requirements.

  2. 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.

  3. 03

    Put it on the correct side

    The project page does not say whether this file belongs on the client, dedicated server, or both.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside oneitem-1.0.2.jar. It opens that exact file at the source.

About this project

What does Only One Item add?

This mod is designed to unify duplicate item types that appear in large modpacks (for example, multiple kinds of tomatoes or silver ore).
Commissioned by @Limit小火柴, it is mainly created for the Utopia modpack to standardize various items, but it can also be used in other modpacks or on servers.
Unlike One Enough Item, this mod starts replacing items during the data loading stage (including recipes, loot tables, etc.).
In other words, anything loaded in JSON format, such as recipes, can be replaced—meaning world loading speed will not be affected.
If you are using an item manager, this mod currently only supports JEI (since that’s what the Utopia modpack uses).

You can modify related settings in config/oneitem.json.
Example format (this will replace farm_and_charm:wild_onions and farm_and_charm:onion with farmersdelight:onion):

"farmersdelight:onion": [ "farm_and_charm:onion", "farm_and_charm:wild_onions" ]

Project description from CurseForge.

Pick your setup

Only One Item by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

1 available setups

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files

Only One Item versions and loaders

2 of 2 releases match

Looking for an older file? The official CurseForge project page is in Resources.

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