Only One Item

This mod addresses the issue of duplicate items that frequently appear in large Minecraft modpacks. Originally commissioned by @Limit小火柴 for the Utopia modpack to standardize various items, it can also be effectively used in other modpacks and on servers.

Unlike similar solutions, Only One Item begins replacing items during the data loading stage, including recipes, loot tables, and other elements. Since all operations are performed with JSON files, world loading speed remains unchanged—this is one of the mod's key advantages.

For inventory management, the mod supports JEI—the tool used in the Utopia modpack. Settings can be modified in the config/oneitem.json file.

Configuration example (replacing farm_and_charm:wild_onions and farm_and_charm:onion with farmersdelight:onion):

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