Composite

Brings Jetpack Compose and Material 3 to Minecraft.

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Rent Server with this Mod

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About this Mod

Composite

Composite is a Minecraft Fabric library that brings Jetpack Compose and Material 3 to Minecraft modding. It allows developers to build modern, reactive user interfaces for Minecraft Screens and HUDs using the declarative power of Kotlin and Compose.

Features

Jetpack Compose UI: Build Minecraft GUIs using standard Compose code.

Material 3: Full support for Material Design 3 components.
Minecraft Integration:
Screens: Create full-screen UIs with ComposeScreen.

HUD: Render overlays with ComposeHud.

Items: Render Minecraft ItemStacks inside Compose layouts.

Textures: Render Minecraft textures (ResourceLocations) inside Compose layouts.

Input Handling: Automatic mapping of Minecraft mouse and keyboard events to Compose.

Available Versions

Composite 0.5.0release

MC 1.21.1fabric

February 15, 2026

Composite 0.3.0release

MC 1.21.1fabric

February 8, 2026

Composite 0.2.1release

MC 1.21.1fabric

January 27, 2026

How to Install Composite on Your Server

Order Server

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

Set fabric Loader

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

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.1

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Composite server crashes on startup – what to do?

Most common cause: wrong fabric 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 Composite compatible with fabric?

Composite officially supports fabric for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Composite – how to optimize performance?

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