a0fefd's ConfigLib
by a0fefd
With a0fefd's ConfigLib, a Fabric mod author describes settings as plain Java objects and the library builds the in-game config screen and its command.
What it does
Option types cover booleans, integers, floats, strings, Java enums, lists, tuples and buttons under one unified API. A BUTTON option runs a callback instead of holding a saved value, which suits actions that should not be stored in the config file. Settings are persisted as JSON.
Options can be grouped in tabs, with sub-categories as headings inside each tab, so a larger config stays organized. The library registers its own command that opens the config screen, and ConfigCommand.registerWithAlternatives can add further command aliases that open the same screen. The mod requires Fabric API and runs on Minecraft 26.1.2 with Fabric Loader 0.19.3 or newer. Players need it installed to open the screen, while a server can run without it. The code is released under the MIT License and is open source.
Key features
In-game config screen
Options registered by a mod appear on a screen that players can open without leaving the game.
Tabs and sub-categories
Categories become tabs, and sub-category headings group related options inside each tab.
Seven option types
Booleans, numbers, strings, enums, lists, tuples and buttons share one API, so each setting uses the same declaration style.
Auto-registered command
A command is registered automatically and opens the screen, and extra aliases can be added with a single call.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Adding settings to a Fabric mod
A mod author declares options as Java objects and gets the screen and JSON saving without building a settings interface.
Who it’s for: Fabric mod developers who want an in-game settings screen without hand-rolling GUI code. Players of mods that use the library see the same screen across them.
Questions
Does ConfigLib need Fabric API?
Does a server need ConfigLib installed?
Which Minecraft version does the current file support?
In the catalog
a0fefd's ConfigLib 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.
More from a0fefd
Similar mods
What the author says
A lightweight config library for Fabric mods. Describe your options as plain Java objects and get a working in-game config screen, a / command to open it, and JSON persistence, all without hand-rolling a GUI. That is enough to get a working /mymod command opening a config screen with one toggle in it. Add more…
Official listing
- Modrinth page
- modrinth.com/mod/a0fefds-configlib
- Owner
- a0fefd
- Published
- 2026-08-04
- Updated on Modrinth
- 2026-08-20
- Facts verified
- 2026-10-15