Partial-Keep-Inventory

Where the vanilla keepInventory rule keeps everything, this mod protects a selected set of items on death and lets the rest drop normally. Gear that cannot stack, including tools, weapons, armour and elytra, survives death, and so do shulker boxes with their colour intact, plus container-type items such as ender chests and bundles. Stackable blocks, food and other stackables drop as usual. Kept items return to their original inventory slots, including the hotbar and the off-hand.

Worn armour is re-equipped automatically on respawn, but each death applies extra durability damage to every worn piece, 3% of its maximum by default. Items are never destroyed by this penalty, and at least 1 durability always remains. The player also loses a configurable number of experience levels, 1 to 5 by default, and never drops below level 0; the lost experience is not left behind as orbs.

The mod runs on the server only, so players join without installing anything. It requires Fabric Loader 0.18 or newer, Fabric API and Java 21 or newer, and it is published for 1.21.11 – 26.1.2. The code is under the MIT License, and the project is not open source in the sense that matters here: it is a released build with no separate source listing on this card.