ModsFinder

PolyLib

by CreeperHost

PolyLib is a library mod from CreeperHost Ltd. that supplies helper classes other mods call during development.

FabricForgeNeoForgeClient or server, optionalBSD-4-Clause1.18 – 26.3

What it does

PolyLib gathers reusable classes for mod developers, including support for building graphical user interfaces, and other development utilities. A player does not interact with it directly; its value lies in the code other mods draw on. It is built on Architectury, so one codebase targets Fabric, Forge and NeoForge.

Architectury API and Fabric API are both required, and they must be installed alongside PolyLib on Fabric. Either side can run it, and neither needs it, so it works on a client, a server or both. Ten catalog mods depend on PolyLib, including Backup Manager, Shrink, CreeperHost Presents Steve's Carts, MineTogether and Reborn Storage.

Key features

  1. Helper classes for developers

    A collection of utility classes aimed at reducing the amount of boilerplate code in mod projects.

  2. GUI construction tools

    Classes that make it simpler to create graphical user interface screens for a mod.

  3. Shared codebase

    Built with Architectury so the same source can be compiled for each supported mod loader.

Compatibility

Latest build for each game version and loader.

26.x3 of 3 versions with builds
26.32.0.17Not available2.0.17
26.22.0.11Not available2.0.11
26.1.22.0.11Not available2.0.11
1.21.x8 of 8 versions with builds
1.21.82107.1.0.181Not available2107.1.0.181
1.21.72107.1.0.181Not available2107.1.0.181
1.21.62106.1.0.182Not available2106.1.0.182
1.21.52105.0.4.174Not available2105.0.4.174
1.21.42104.0.4-build.163Not available2104.0.4-build.163
1.21.32103.0.4-build.161Not available2103.0.4-build.161
1.21.12100.0.3-build.160Not available2100.0.3-build.160
1.212100.0.3-build.160Not available2100.0.3-build.160
1.20.x4 of 4 versions with builds
1.20.42004.0.3-build.1552004.0.3-build.1552004.0.3-build.155
1.20.22002.0.3-build.1572002.0.3-build.1572002.0.3-build.157
1.20.12000.0.3-build.1432000.0.3-build.1432000.0.3-build.143
1.202000.0.3-build.1432000.0.3-build.1432000.0.3-build.143
1.19.x3 of 3 versions with builds
1.18.x3 of 3 versions with builds
ReleaseBetaAlphaNot available

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

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

Required by 10 mods

Backup Manager1.18.2 – 1.21.5Shrink1.16.4 – 26.3CreeperHost Presents Steve's Carts1.16.5 – 1.21.7MineTogether1.7.10 – 26.3Reborn Storage1.10.2 – 1.20.4CreeperHost Presents Soul Shards1.16.5 – 26.3

Use cases

Mod developers

Developers who build screens or utilities can call the library instead of writing those classes from scratch.

Who it’s for: Mod developers and modpack authors who want the shared classes that CreeperHost's mods depend on.

Questions

Does PolyLib need Architectury API?

Yes. Architectury API is a required dependency and must be installed next to PolyLib.

Does a server need PolyLib?

Not necessarily. Either side can run it, and neither needs it, though mods that require it will need it on that side.

Which loaders does PolyLib support?

Fabric, Forge and NeoForge. Forge's latest file is 2004.0.3-build.155 for 1.20.4, and the Fabric and NeoForge latest files are 2.0.17 for 26.3.

Under what license is PolyLib released?

It is released under the BSD-4-Clause License and is not open source, though its source code is publicly available.

In the catalog

PolyLib is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 8,071 mods support Minecraft 26.3.

Library mods3,514Fabric modsMods for 26.38,071

More from CreeperHost

All projects
Backup Manager1.18.2 – 1.21.5CreeperHost Presents Steve's Carts1.16.5 – 1.21.7MineTogether1.7.10 – 26.3CreeperHost Presents Soul Shards1.16.5 – 26.3LetsEncryptCraft1.7.2 – 1.12.2BlockShot1.12.2 – 26.3

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

"PolyLib," developed by CreeperHost Ltd., is a compact Minecraft library mod focused on providing a collection of helper classes. These classes are designed to simplify various aspects of mod development, offering tools for easier GUI creation and other development enhancements to improve efficiency and user…
CreeperHost, on the Modrinth page

Official listing

Owner
CreeperHost
Published
2024-11-05
Updated on Modrinth
2026-10-13
Facts verified
2026-10-15

Tags

Library
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