About S-Lib
From ModrinthAn easy to use config and utility library.
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.
Highlights
From source dataGame versions
Supports 2 Minecraft versions, the newest being 1.21.1.
Loaders
Runs on Fabric, Forge 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.
Client-side mod
From source side supportModrinth lists S-Lib as not supported on servers. It runs in players’ own games, not on your server.
Compatibility
- Game
- Minecraft
- Loaders
- FabricForgeNeoForge
- Runs on
- Client only
- Game versions
- 1.21.1 and 1 earlier
Verified at the source
- ✓ModrinthOfficial listing, checked 2026-10-01Open ↗
- ✓AuthorStalemated, as published on Modrinth
- ✓LicenseMITFree









