Item Break Prevention

Once a durability item wears down to nothing, the mod keeps its stored stack data and swaps the stack for a broken copy of the same item. That copy keeps the original name and vanilla tooltip, adds a line marking it as Broken, and cannot be used, mined with or equipped until it is repaired. Its tooltip still lists the enchantments, attributes and other details of the original.

Repair happens in an anvil. The right slot must hold another item with the same item id as the broken one, and that match restores the original through the usual anvil flow. Because broken items are matched by item id rather than vanilla repair ingredients, modded tools and armor work without custom repair recipes, but enchantments, custom names and other item data must match before the repair goes through. For example, broken leather boots need another pair of minecraft:leather_boots to be repaired.

The mod is published for NeoForge only, for 1.21.1, and its license is All rights reserved, so it is not open source. A server running it needs every connecting player to have it too. Installing it on a server alone does not cover players who join without it.