tweakable-xp-loss

The share of a player's total accumulated experience points that survives death is set by the server owner in the config file. The vanilla small orb drop at the death point is suppressed, and the retained portion is returned either instantly on respawn or in the form of orbs awarded immediately upon respawn.

The mod is server-side only, so players join without installing anything and only the server runs it. It never touches item drops, which makes it compatible out of the box with corpse and gravestone mods. Setting keepPercentage to 0 or enabling the mod to false leaves vanilla behavior unchanged, and the keepInventory gamerule is a no-op with it because vanilla already preserves XP in that case. The code is open source under the MIT License.

The published files cover the 1.21.1 build and several 1.21.x and 26.x builds, with the 26.2 jar published only as a beta release because NeoForge 26.2 has not yet shipped a stable build. The mod ships three jars compiled against each era's Minecraft and NeoForge APIs, and the 26.x jar uses the same GameRules API and mod code as the 1.21.11 jar, differing only in its compile target and the Java toolchain. Changes to the config take effect once the server is reloaded or restarted.