CurseForge · Minecraft mod
MCULib
A library mod for MCUpdater mods
Quick answer
Which MCULib release should I use?
mculib-1.5.2.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 MCULib 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 mculib-1.5.2.jar need?
mculib-1.5.2.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 MCULib without breaking your instance.
Built for mculib-1.5.2.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use mculib-1.5.2.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 mculib-1.5.2.jar. It opens that exact file at the source.
About this project
What does MCULib add?
A library mod providing shared code for MCUpdater mods, including GUI widgets and a standard base platform for machines requiring power, inventories, and/or fluids
Features include:
- Abstract classes providing common functionality for machines such as:
- Rotation on placement and setting the name of the inventory on placement if it has been renamed in an anvil.
- Power storage and use
- Sharing power with adjacent blocks
- Tracking progress of the machine
- Storing XP in the machine to be extracted when the output is retrieved manually
- Boilerplate code for the GUI of machines that can be overridden as necessary
- GUI widgets for easily building your machine interfaces:
- Power widget for stored power - Can be oriented horizontally or vertically
- Fluid widget for stored fluids
- Tab widget for switching between configuration panels
- Panel widget for displaying different information
- Standard NeoForge capability handlers for items, fluids, and power
- Built-in configuration screen to control input and output behavior for each side
- Displays the name of the block on each side as well as what capabilities are available
Project description from CurseForge.
Pick your setup
MCULib by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
MCULib versions and loaders
mculib-1.5.2.jar
5 Jun 2026
mculib-1.5.1.jar
30 Mar 2026
mculib-1.5.0.jar
25 May 2025
Looking for an older file? The official CurseForge project page is in Resources.