ModsFinder

Class Gem: Core

by HER0XP

Class Gem: Core is a shared library for a collection of RPG mods built around class gems, and it does not add gameplay on its own.

ForgeClient and serverAll rights reserved1.20.1

What it does

The mod provides interfaces, events, utilities and logic common to class gem mods, covering passive activations, cooldowns and ally detection. Players who install only Class Gem: Core will not see new items or mechanics, because the content comes from the mods that build on it. Curios API is required as a dependency.

Two catalog mods require Class Gem: Core: Class Gem: Berserker and Class Gem: Paladin. Paladin Gem is named as a complementary mod that must be present for its effect to work in game. The library runs on client and server, so both the server and every player need it. Files are published for Forge 1.20.1, with 1.0.5 as the latest file from 2025-10-05, and the first file was published on 2025-10-04. The code is licensed as All rights reserved.

Key features

  1. Shared passive activations

    Passive abilities from class gem mods use common activation logic, so each dependent mod does not implement it separately.

  2. Cooldown handling

    Timers for ability cooldowns are provided by the core, giving dependent mods one consistent system.

  3. Ally detection

    Helpers identify allied entities for effects that target friends rather than enemies.

  4. Shared events and interfaces

    Events and interfaces are exposed for other class gem mods to hook into.

Compatibility

Latest build for each game version and loader.

1.20.11.0.5
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

Curios APIA flexible and expandable accessory/equipment API for users and developers.
Required

Required by 2 mods

Class Gem: Berserker1.20.1Class Gem: Paladin1.20.1

How it compares

Full comparison

Battlebound: Core and Required: Core are also Forge libraries for 1.20.1 that run on client and server and are published under All rights reserved, so they cover the same version and environment. F-Tech: Core supports both Fabric and Forge for 1.20.1 under the GNU Lesser General Public License v3.0 only, and CreateFirmaCraft - Core is a Forge library for 1.20.1 under the MIT License, which is a permissive license. Class Gem: Core is licensed as All rights reserved, while OK Core is open source but targets 1.7.10 instead.

ModLoadersGame versionsEnvironmentUpdated
Class Gem: CoreForge1.20.1Client and server2025-10-05
Battlebound: CoreForge1.20.1Client and server2026-10-06
Required: CoreForge1.20.1Client and server2025-12-29
F-Tech: CoreFabric and Forge1.20.1Client and server2026-02-21
CreateFirmaCraft - CoreForge1.20.1Client and server2025-12-01
OK CoreForge1.7.10Client and server2026-10-10

Questions

Does Class Gem: Core need Curios API?

Yes. Curios API is a required dependency and must be installed alongside Class Gem: Core on Forge 1.20.1.

Does Class Gem: Core have to be installed on both sides?

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

Why install Class Gem: Core without other class gem mods?

It adds no items or abilities by itself. Mods such as Class Gem: Berserker and Class Gem: Paladin require it, and Paladin Gem must be present for its effect to work in game.

In the catalog

Class Gem: Core is one of 3,514 Library mods on ModsFinder, and one of 1,576 Library mods for Forge. 34,764 mods support Minecraft 1.20.1.

Library mods3,514Forge modsMods for 1.20.134,764

More from HER0XP

All projects
Epic RPG: Party Hud1.20.1 – 26.1.2Epic RPG: Loot Sentinel1.20.1 – 1.21.11Epic RPG: Average DPS1.20.1 – 26.1.2XP: Attribute Core1.20.1 – 1.21.1Epic RPG: Legendary Titles1.20.1 – 1.21.1Epic RPG: Class Artifacts1.20.1 – 1.20.6

Similar mods

Cloth Config API1.14 – 26.3YetAnotherConfigLib (YACL)1.19 – 26.3Architectury API1.16.5 – 26.3Just Enough Items (JEI)1.8 – 26.3Geckolib1.12.2 – 26.3Forge Config API Port1.16 – 26.3

What the author says

This mod serves as a shared core for a collection of RPG mods based on class gems. It provides interfaces, events, helpers, and common logic for passive activations, cooldowns, ally detection, and more.
HER0XP, on the Modrinth page

Official listing

Owner
HER0XP
Published
2025-10-04
Updated on Modrinth
2025-10-05
Facts verified
2026-10-15

Tags

Library
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