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

By QuiltMC , OroArmorCore maintainer
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1 rating (100%) · 4.0★
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The standard libraries of the Quilt ecosystem. Essential for your modding experience on Quilt!

No Theme
No Genre
QoL & Tweaks
API/Library
Mod Loaders
Quilt
Minecraft
1.21
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4.0

Fabric API but...

smeagle-0

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Explorer 0 pts
Contributor 100 pts
Guide 500 pts ←
Veteran 1,500 pts
Luminary 4,000 pts

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About reputation ranks
MC 1.19, 1.1… MC 1.19, 1.18
The version(s) the reviewer played

This is a compatibility layer for Fabric mods that use Fabric API so they can run on Quilt that generally works 'fine'. You thankfully don't need to also install QSL as this has it packaged.

1
0
Posted July 25, 2026 at 4:05:14 PM UTC
Quilted Fabric API (QFAPI) / Quilt Standard Libraries (QSL)
4.0

Fabric API but...

smeagle-0

Reputation ranks

Explorer 0 pts
Contributor 100 pts
Guide 500 pts ←
Veteran 1,500 pts
Luminary 4,000 pts

Ranks only ever go up; points can drop but your rank stays.

About reputation ranks
MC 1.19, 1.1… MC 1.19, 1.18
The version(s) the reviewer played

This is a compatibility layer for Fabric mods that use Fabric API so they can run on Quilt that generally works 'fine'. You thankfully don't need to also install QSL as this has it packaged.

1
0
Posted July 25, 2026 at 4:05:14 PM UTC
4.0
smeagle-0

Reputation ranks

Explorer 0 pts
Contributor 100 pts
Guide 500 pts ←
Veteran 1,500 pts
Luminary 4,000 pts

Ranks only ever go up; points can drop but your rank stays.

About reputation ranks
Posted July 25, 2026 at 4:05:14 PM UTC
MC 1.19, 1.1… MC 1.19, 1.18
The version(s) the reviewer played
1
0

Get it on

Available Platforms

CurseForge logo CurseForge Modrinth logo Modrinth

Compatibility

Supported Environments

Where It Runs
Either Side, Better on Both

Works on the client or the server alone, but does more when on both.

About

Project Details

Type
Mod
License
Apache License 2.0
Latest Version
[1.20.1] QFAPI 7.7.0 and QSL 6.3.0

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CurseForge ID
Modrinth ID

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External Links

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About

Description

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.

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.

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2.4m
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1.7m
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