ModsFinder

Katton

by Alumopper

Katton is a Kotlin scripting framework for Minecraft, letting modders change game behavior through scripts that reload while the game runs.

FabricNeoForgeClient and serverMIT LicenseOpen source26.1 – 26.1.2

What it does

Katton runs Kotlin Scripts that interact directly with Java objects at runtime. Script packs are managed from a built-in screen opened with the K key, where each pack can be toggled on or off and monitored. Diagnostic commands inspect registries without leaving the game.

Scripts are hot-reloadable, so changes show up in the game without a restart. The framework is meant for modders at different skill levels, from first scripts to complex mods that work with Minecraft in unusual ways. Katton requires Fabric API and supports both Fabric and NeoForge, with the two loaders sharing most of the same interface and differing only in some events. It runs on client and server and is open source under the MIT License, with builds for 26.1 – 26.1.2 released 2026-08-06.

Key features

  1. Kotlin scripting

    Mods are written in Kotlin scripts that can call Java classes and objects while the game runs.

  2. Hot reload

    Edited scripts reload in place, so modders can test changes without restarting the game.

  3. In-game pack manager

    A GUI opened with the K key lists script packs and switches each one on or off.

  4. Registry diagnostics

    Commands report registry contents from inside the game, helping modders check their work.

Compatibility

Latest build for each game version and loader.

26.1.20.3.00.3.0
26.1.10.2.00.2.0
26.10.2.00.2.0
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

Questions

Does Katton need Fabric API?

Yes. Fabric API is listed as a required dependency, and it must be installed alongside Katton on Fabric.

Is Katton needed on a server?

Installation covers the server and each player's game.

Which game versions does Katton support?

Files exist for 26.1, 26.1.1 and 26.1.2, with 0.3.0 for 26.1.2 as the latest file on both Fabric and NeoForge.

In the catalog

Katton is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 15,189 mods support Minecraft 26.1.2.

Library mods3,514Fabric modsMods for 26.1.215,189

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Datapack Debugger1.21

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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

Katton is a powerful modding framework for Minecraft that allows you to use Kotlin scripts to create and modify game content. With hot-reloadable scripts, you can see your changes in real-time without needing to restart the game. Katton supports both Fabric and NeoForge. We are trying to keep the API as consistent as…
Alumopper, on the Modrinth page

Official listing

Owner
Alumopper
Published
2026-05-10
Updated on Modrinth
2026-08-06
Facts verified
2026-10-15

Tags

LibraryUtility
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