About Matthiesen Lib
From Modrinth⚠️ This mod has been deprecated and is no longer going to receive updates. This library has been replaced by Matthiesen Core which provides a more robust and feature-rich foundation for mod developers to build upon.
Matthiesen Lib
> ⚠️ This mod has been deprecated and is no longer going to receive updates. This library has been replaced by Matthiesen Core which provides a more robust and feature-rich foundation for mod developers to build upon.
Matthiesen Lib is a lightweight Architectury-style library that enables mod developers to write shared code that works seamlessly across both Fabric and NeoForge mod loaders for Minecraft 1.21.1. Instead of maintaining separate implementations for each platform, you can write your mod logic once in common code and let Matthiesen Lib handle the platform-specific details.
> Note: For regular users, This library does nothing on its own - it's a developer tool. If a mod requires Matthiesen Lib, simply drop it in your mods folder alongside the mod that needs it.
Docs
Documentation for the library can be found at mods.matthiesen.dev
Dependencies
- Matthiesen Lib API - The core API mod that provides the shared code and functionality for mod developers to use in their mods.
Optional Dependencies
- Ember's Text API - Use fancy text effects anywhere, including custom fonts!
Version Compatibility
| Minecraft Version | Library Version | |-------------------|-----------------| | 1.21.1 | 1.x.x |
Highlights
From source dataGame versions
Built for Minecraft 1.21.1.
Loaders
Runs on Fabric and NeoForge.
Footprint
Rated a light load on a server.
What kind of mod it is
From the catalogLibraries & compatibility
Foundations and fixes other mods build on. Usually installed because something else needs it.
Runs on your server
From source side supportModrinth lists Matthiesen Lib as required on the server. Check its Modrinth page to see whether players need it too.
Compatibility
- Game
- Minecraft
- Loaders
- FabricNeoForge
- Runs on
- Serverrequired on the server
- Game versions
- 1.21.1
Verified at the source
- ✓ModrinthOfficial listing, checked 2026-10-01Open ↗
- ✓AuthorAdammatthiesen, as published on Modrinth
- ✓LicenseMITFree









