QtCraft API

QtCraft Widget API -- A UI framework for Minecraft based on Qt.

3 Downloads

neoforgedecorationutility

Rent Server with this Mod

Screenshots

About this Mod

A Qt UI framework

Enables mod developers to build rich, flexible GUIs using familiar Qt paradigms — signals & slots, layouts, stylesheets, model/view, and a full widget hierarchy.

We have QtCraft Demo to display:

GUI Widget

Block Widget

Moreover you can display these UI in the block easily just like:

Block Widget

More Features

More features are in the GitHub

Documents

Documents are in the GitHub

Available Versions

QtCraft 1.0release

MC 1.21.1neoforge

June 4, 2026

How to Install QtCraft API on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).

Install Mod

Open the mod browser in the dashboard and search for "QtCraft API". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.1

Server-side

~ Optional

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

QtCraft API server crashes on startup – what to do?

Most common cause: wrong neoforge 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 (1.21.1). You can switch loaders with one click in the panel.

Is QtCraft API compatible with neoforge?

QtCraft API officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with QtCraft API – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if QtCraft API 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.