Mending

Mending is an enchantment that restores an item's durability when a player collects experience orbs.

Mending is a treasure enchantment; it can be obtained from a trial chamber, desert pyramid, mineshaft, jungle pyramid, bastion remnant, stronghold, End city, ancient city chest loot, vaults, fishing, raid drops,‌[BE only] or by trading with a librarian of any level (or if the "Villager Trade Rebalance" experimental datapack is enabled, a master level swamp librarian).

Mending is incompatible with Infinity. If commands are used to have two or more of these enchantments on the same item, their effects stack.