CurseForge · Minecraft mod
S-Lib
An easy to use config and utility library.
Quick answer
Which S-Lib release should I use?
S-Lib 3.0.1 - Fabric 1.21.1 targets 1.21.1 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is S-Lib required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does S-Lib 3.0.1 - Fabric 1.21.1 need?
S-Lib 3.0.1 - Fabric 1.21.1. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add S-Lib without breaking your instance.
Built for S-Lib 3.0.1 - Fabric 1.21.1. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use S-Lib 3.0.1 - Fabric 1.21.1. It targets 1.21.1 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside S-Lib 3.0.1 - Fabric 1.21.1. It opens that exact file at the source.
About this project
What does S-Lib add?
S-Lib
S-Lib is a lightweight utility and config library for Minecraft modding.
Example mod: Check out the S-Lib Test Mod repository for complete config usage examples and GUI generation using YACL.
Features
Annotation-Driven Configs
- Register synced or local configs in a single line of code using
SLibConfig.syncedBuilder()orSLibConfig.localBuilder(). - Network
@SyncOptions:OVERRIDE_CLIENT: server authoritative config, syncs to the client. Config broadcasts on login and updates in real time. Supports configurable permission checks (e.g., OP-only).INFORM_SERVER: local config, informs server of changesNONE: local config, no network sync
- Newly added fields are automatically populated with defaults, obsolete keys are removed, and values are clamped to specified ranges when using the annotations
@RangeInt,@RangeFloat, and@RangeDouble. - Insert comments using the
@Commentannotation on top of fields, directly in your config class. - Backups are automatically created if file corruption or invalid syntax is detected, preserving the broken config if you accidentally make a mistake.
- Use the
@Nestannotation to allow usage of nested classes for more complex config structures. - Use the
@Ignoreannotation to ignore a field entirely. - Built-in type adapters compatible with serialization for AWT's
Color, Minecraft'sTextColor,Identifier,Pattern, andUUIDclasses.
Custom YACL Controllers
Custom controllers for YACL:
- Advanced Color Controller: Supports hex codes (
#RRGGBBAA), Minecraft color names, and legacy formatting codes (&a,&3). - Item or Tag Controller: Autocomplete dropdown for matching exact items, tags (
#c:swords), namespaces (minecraft:*), and regex patterns. - Simple Dropdowns: Dropdown selectors for Enums and Strings.
General Utilities
- Target Matcher Engine: Item matching via exact IDs, tags, namespaces, wildcards (
*), and regex (regex:.*_sword). - Platform Helpers: Abstractions for loader-specific methods, both as a general utility (
PlatformHelper) and for network-related features (NetworkHelper). - Math and Color Utils: Easing functions (lerp, ease-out, clamp), text gradient generators, color utilities, and more.
Project description from CurseForge.
Pick your setup
S-Lib by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
S-Lib versions and loaders
S-Lib 3.0.1 - Fabric 1.21.1
s-lib-fabric-3.0.1+1.21.1.jar
30 Sept 2026
S-Lib 3.0.1 - Fabric 1.20.1
s-lib-fabric-3.0.1+1.20.1.jar
30 Sept 2026
S-Lib 3.0.1 - NeoForge 1.21.1
s-lib-neoforge-3.0.1+1.21.1.jar
30 Sept 2026
S-Lib 3.0.1 - Forge 1.20.1
s-lib-forge-3.0.1+1.20.1.jar
30 Sept 2026
S-Lib 3.0.0 - Fabric 1.21.1
s-lib-fabric-3.0.0+1.21.1.jar
25 Sept 2026
S-Lib 3.0.0 - NeoForge 1.21.1
s-lib-neoforge-3.0.0+1.21.1.jar
25 Sept 2026
S-Lib 3.0.0 - Fabric 1.20.1
s-lib-fabric-3.0.0+1.20.1.jar
25 Sept 2026
S-Lib 3.0.0 - Forge 1.20.1
s-lib-forge-3.0.0+1.20.1.jar
25 Sept 2026
S-Lib 2.1.1 - Forge 1.20.1
s-lib-forge-2.1.1+1.20.1.jar
9 Sept 2026
S-Lib 2.1.1 - Fabric 1.20.1
s-lib-fabric-2.1.1+1.20.1.jar
9 Sept 2026
S-Lib 2.1.1 - Fabric 1.21.1
s-lib-fabric-2.1.1+1.21.1.jar
9 Sept 2026
S-Lib 2.1.1 - NeoForge 1.21.1
s-lib-neoforge-2.1.1+1.21.1.jar
9 Sept 2026
Looking for an older file? The official CurseForge project page is in Resources.