More information on the github link

📖 Durability Multiplier

A Minecraft data pack library for handling custom durability on every damageable item (vanilla, custom, and modded items).

• This custom durability is done by simulating a kind of unbreaking enchantment on the item.
• For example, if you have an item with a durability of 100, and you apply a durability multiplier of 2.0, the item will have 50% chance to really lose durability. So you will use this item 2x as if it had 200 durability.
• This library provide you a totally configurable multiplier for every specific item depending on its id and its nbt tag.
• This system is compatible with unbreaking and mending enchantments.

This is an embedded library, so you package it inside your datapack as opposed to having a separate download.
Requires LanternLoad to operate.

Differences between this library and most other Custom Durability Libraries

- You can directly repair items in an anvil.
- You don't have to add special nbt to your items.
- You can use this library with any item that can lose durability, including items from mods.
- We do not use a custom lore for the item to show the custom durability.
- If you item lose multiple durability at once, the value is divided by the multiplier.