Quilted Fabric API (QFAPI) and Quilt Standard Libraries (QSL)
Essential standard libraries for the Quilt ecosystem. QSL gives modders Quilt-exclusive tools to add new and exciting features to their mods, while Quilted Fabric API provides compatibility with Fabric mods that use the Fabric API.
This project requires Quilt Loader!
The Quilt Project
The Quilt project is an open-source, community-driven modding toolchain designed primarily for Minecraft. By focusing on speed, ease of use and modularity, Quilt aims to provide a sleek and modern modding toolchain with an open ecosystem.
Learn more about Quilt on our website.
Notes
Quilt is currently still in development, and in beta. This means issues may arise but we will do our best to fix them as fast as we can.
Quilted Fabric API does not support the "implementation details" of most of Fabric API. Mods that use implementation details may work on Fabric, but will not work on Quilt.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as qfapi-7.7.0_qsl-6.3.0_fapi-0.92.2_mc-1.20.1.jar — drop this file into the mods folder
- Download size: 2.6 MB
- Download link checked 26 Aug 2026 — working
These come from our own check of the pack file, not from the source page.