Quilt Kotlin Libraries (QKL)
Quilt's official Kotlin libraries
About this Mod
Quilt Kotlin Libraries
Quilt Kotlin Libraries is Quilt's official Kotlin wrappers for QSL and Minecraft. It also bundles the Kotlin StdLib, and some Kotlinx libraries. You do not need Fabric Language Kotlin with Quilt Kotlin Libraries installed.
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.
Available Versions
How to Install Quilt Kotlin Libraries (QKL) on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set quilt Loader
In the panel under "Egg", select the quilt loader and matching Minecraft version (1.21).
Install Mod
Open the mod browser in the dashboard and search for "Quilt Kotlin Libraries (QKL)". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21, 1.20.4, 1.20.2 (+7 more)
Server-side
~ OptionalRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Quilt Kotlin Libraries (QKL) server crashes on startup – what to do?
Most common cause: wrong quilt version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21). You can switch loaders with one click in the panel.
Is Quilt Kotlin Libraries (QKL) compatible with quilt?
Quilt Kotlin Libraries (QKL) officially supports quilt for Minecraft 1.21, 1.20.4, 1.20.2. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Quilt Kotlin Libraries (QKL) – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Quilt Kotlin Libraries (QKL) consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Quilt Kotlin Libraries (QKL) with just one click on your server.