ModsFinder

Liby

by Nico_44

Liby is a Fabric library mod that other developers can use as a required dependency when building their own content for Minecraft Java Edition.

FabricClient and serverGNU General Public License v3.0 or laterOpen source1.19.2 – 1.21.1

What it does

Liby is a utility library rather than a gameplay mod. Its code is meant for mod authors who want to build content on top of it, and players do not interact with it directly. Two catalog mods, Tree Bark+ and Titanomachy, list it as a required dependency, so anyone installing them also needs Liby.

The library is published for Fabric only, with files for 1.19.2, 1.20.1 and 1.21.1. The most recent file is 3.0.0.0-1.20.1 for 1.20.1, released 2025-10-18 on the alpha channel. The code is released under the GNU General Public License v3.0 or later, and the source code, issue tracker and wiki are all public. The wiki has a full breakdown of the library's features and setup steps.

Liby runs on client and server, so both the server and every player need it when a dependent mod is installed. Files for 1.19.2 – 1.21.1 are listed under the 3 release versions shown on the page, and major version changes can break dependent mods that target an older release.

Key features

  1. Registration MultiBlock library

    The library provides a registration system for multiblock structures, so developers can declare them in code instead of wiring each one by hand.

  2. Shared base for other mods

    Liby is built for utility developers who add their own content, and it supplies common code they can reuse across projects.

  3. Version-specific builds

    Separate files are kept for each supported Minecraft release, so a dependent mod can pin the build that matches its target game version.

  4. Public source and wiki

    Source code, the issue tracker and a wiki are all public, and the wiki walks through the library in detail.

Compatibility

Latest build for each game version and loader.

1.21.11.21.1-build-2.1.1
1.20.13.0.0.0-1.20.1
1.19.21.19.2-build-2.1
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Required by 2 mods

Tree Bark+1.16 – 1.21.1Titanomachy1.19.2

Use cases

Who it’s for: Mod developers who want a shared library for registering multiblock content in their own Fabric mods. Players who install Tree Bark+ or Titanomachy also need this library.

Questions

Does Liby need to be installed on the server?

Yes. Servers that run it need every player to install it too.

Which loader does Liby support?

Liby is published for Fabric only. Files exist for 1.19.2, 1.20.1 and 1.21.1, and the latest is 3.0.0.0-1.20.1 for 1.20.1.

Why do dependent mods break after an update?

Major version changes can break mods that use an older release, so dependent mods may need to wait for their authors to update.

In the catalog

Liby is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 32,366 mods support Minecraft 1.21.1.

Library mods3,514Fabric modsMods for 1.21.132,366

More from Nico_44

All projects
Tree Bark+1.16 – 1.21.1Biomes O' Bark1.19.2 – 1.21.1Nicos Backslots1.19 – 1.21.1Enchantment Glint Toggler1.15 – 1.21.11World Bridge1.20.1 – 1.20.4Grimoire1.19.2

Similar mods

Fabric API1.14 – 26.3Cloth Config API1.14 – 26.3YetAnotherConfigLib (YACL)1.19 – 26.3Architectury API1.16.5 – 26.3Just Enough Items (JEI)1.8 – 26.3Geckolib1.12.2 – 26.3

What the author says

This mod serves as a utility for developers and does not add any content on its own. It is a required dependency for other mods. Major version changes like 1.0 to 2.0 will break most mods using the older version, wait for an update from their mod author.
Nico_44, on the Modrinth page

Official listing

Owner
Nico_44
Published
2024-10-04
Updated on Modrinth
2025-10-18
Facts verified
2026-10-15

Tags

Library
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