Quilted Fabric API (QFAPI) / Quilt Standard Libraries (QSL)

Mod Quilted Fabric API (QFAPI) / Quilt Standard Libraries (QSL)

Explore mod details and available versions

Modrinth 54 versions 1,740,734 Daily updates
Quilted Fabric API (QFAPI) / Quilt Standard Libraries (QSL) Official Website Create my server Back to mods list

Quilted Fabric API (QFAPI) / Quilt Standard Libraries (QSL)

Modrinth Quilt-Holdings 54 versions 1,740,734 downloads
Developer’s note: The standard libraries of the Quilt ecosystem. Essential for your modding experience on Quilt!

Quilted Fabric API and Quilt Standard Libraries

QSL and QFAPI are foundational libraries for Minecraft Java Edition modding with Quilt on supported versions. QSL supplies core tools and APIs for events, registries, resources, networking, commands, entities, blocks, items, and world generation. These libraries do not add content by themselves. Instead, they give developers reliable building blocks for creating compatible, feature rich mods while helping reduce conflicts between projects.

QFAPI also provides a compatibility layer for many Fabric mods, using QSL where possible and covering APIs Quilt does not yet offer. For a Quilt Minecraft server, this shared foundation supports a smoother experience across client and server environments. BoxToPlay is a practical choice for enjoying Quilt modpacks and customized gameplay.

Available Versions

Version Minecraft Loaders Actions
[1.20.1] QFAPI 7.7.0 and QSL 6.3.0 1.20.1 quilt
[1.21] QFAPI 11.0.0-alpha.3 and QSL 10.0.0-alpha.1 1.21 quilt
[1.21] QFAPI 11.0.0-alpha.3 and QSL 10.0.0-alpha.1 1.21 quilt
[1.20.1] QFAPI 7.6.0 and QSL 6.2.0 1.20.1 quilt
[1.21] QFAPI 11.0.0-alpha.2 and QSL 10.0.0-alpha.1 1.21 quilt
[1.20.6] QFAPI 10.0.0-alpha.3 and QSL 9.0.0-alpha.1 1.20.6 quilt
[1.21] QFAPI 11.0.0-alpha.1 and QSL 10.0.0-alpha.1 1.21 quilt
[1.20.6] QFAPI 10.0.0-alpha.2 and QSL 9.0.0-alpha.1 1.20.6 quilt
[1.20.1] QFAPI 7.5.0 and QSL 6.1.2 1.20.1 quilt
[1.20.4] QFAPI 9.0.0-alpha.8 and QSL 8.0.0-alpha.13 1.20.4 quilt

How to add Quilted Fabric API (QFAPI) / Quilt Standard Libraries (QSL) to your Minecraft server

1

Select your version

Select the version of Quilted Fabric API (QFAPI) / Quilt Standard Libraries (QSL) you want installed on your Minecraft server.

2

Check your cart

You go directly to your cart with the Minecraft plan and selected version of Quilted Fabric API (QFAPI) / Quilt Standard Libraries (QSL) already included. Check that everything is correct before continuing.

3

Receive your server

Wait while your Minecraft server is built and delivered. Installation of your selected Quilted Fabric API (QFAPI) / Quilt Standard Libraries (QSL) version starts during setup. Once it is ready, connect and have fun.

Ready to use Quilted Fabric API (QFAPI) / Quilt Standard Libraries (QSL)?

Create your Minecraft server and install the Quilted Fabric API (QFAPI) / Quilt Standard Libraries (QSL) mod with one click!

Back to mods list Create my server
🍪