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LibJF

A library for my mods

FabricNeoForge
Loaders
FabricNeoForge
Downloads on Modrinth
17.6M
Followers on Modrinth
680
versions
148
Updated
September 21, 2026Sep 21
Published
in 2021
This is a library — other mods need it, and it adds nothing to the game by itselfRequired by 15 mods. Download it if another mod needs it.

At a glance

A library: other mods need it — required by 15 mods
Runs on Fabric and NeoForge
For Minecraft 1.16.5–26.3
Works on either side — install it in the game, on the server, or both
Latest version — 26.3.1+forge from September 21, 2026
License LGPL-3.0-or-later — free
Where it's needed
In gameoptionalOn serveroptional

Works both in the game and on the server — install where you need it

Game versions1.16.5–26.3

LibJF is a library for my smaller mods which contains several common components. Namely it provides:

  • a complete config system with UIs, commands, compile-time codegen, presets, verifiers, etc
  • a framework for manipulating loaded data and resources
  • two new tags (which you can also use in data packs):

    • libjf:overpowered: if an entity only wears armor items with this tag, it will become invulnerable
    • libjf:shulker_boxes_illegal: items with this tag cannot be placed inside shulker boxes. Intended to be used for backpacks or similar items
  • utility code for serialization, script loading, co-processes, IO, etc.
  • network utilities including a HTTP client and server
  • a configurable and extensible translation system supporting various providers
  • utilities for early initialization and ASM patching

If a mod is made by me, it is generally safe to assume it requires LibJF (or ships with parts of it)

If you want to use LibJF yourself, you can find documentation here

FAQ

How to install LibJF?

Install Fabric for your Minecraft version, download LibJF for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does LibJF support?

LibJF has builds for Minecraft 1.16.5–26.3.

Is LibJF needed on the server?

Works on either side — install it in the game, on the server, or both

License and source
GNU Lesser General Public License v3.0 or laterfree to use and share; changes to the mod itself must be published under the same license
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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