CurseForge · Minecraft mod
XP Synthesiser
XP Synthesiser is a mod that lets you synthesise XP from power. The main goal of this mod is to provide those on multiplayer and singleplayer with a simple, lag-less alternative to mobfarms that provides solely experience.
Quick answer
Which XP Synthesiser release should I use?
XP Synthesiser xp_synthesiser-1.0.3.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is XP Synthesiser required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does XP Synthesiser xp_synthesiser-1.0.3.jar need?
xp_synthesiser-1.0.3.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add XP Synthesiser without breaking your instance.
Built for XP Synthesiser xp_synthesiser-1.0.3.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use xp_synthesiser-1.0.3.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside xp_synthesiser-1.0.3.jar. It opens that exact file at the source.
About this project
What does XP Synthesiser add?
Overview
XP Synthesiser is a mod that lets you synthesise XP from power. The main goal of this mod is to provide those on multiplayer and singleplayer with a simple, lag-less alternative to mobfarms that provides solely experience. It also has added utility of being able to store experience, but the mod itself does not provide a way to generate power.
How to use
The mod contains a block (the XP Synthesiser) and an item (the Kill Recorder).
After crafting the Kill Recorder, you can toggle (shift + right click) it to let it start recording any mobs you kill. It will tally the gained experience from the kills, and then you can toggle it again to store that recording. Any future recordings on the same Kill Recorder will overwrite any previous ones. It will only register XP gain from kills, and no other sources.
A Kill Recorder with a saved recording can be placed inside the XP Synthesiser. The Synthesiser, with a valid recording, will start to generate XP. It will generate the amount of XP that you stored in the recording in the amount of time it took you to record that amount of XP gain. However, a power cost is applied per experience point generated, scaled harshly depending on how long it took you to record (much shorter recordings have a much higher per-tick and total power cost). XP generation is paused while there is not sufficient power.
Any XP generated can be extracted with the buttons in the XP Synthesiser's UI. XP can also be stored in the block that way - but be careful! Breaking the block will lose any retained XP.
Project description from CurseForge.
Pick your setup
XP Synthesiser by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.3
1 loader build1.21.2
1 loader build1.21.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
XP Synthesiser versions and loaders
xp_synthesiser-1.0.3.jar
31 Jul 2025
xp_synthesiser-1.0.2.jar
5 Mar 2025
xp_synthesiser-1.0.1.jar
18 Dec 2024
xp_synthesiser-1.0.0.jar
13 Dec 2024
Looking for an older file? The official CurseForge project page is in Resources.