ShaderAPI

Let servers send you shader packs.

3.6K Downloads

fabricutility

Rent Server with this Mod

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About this Mod

The Minecraft Fabric ShaderAPI Mod streamlines the process of delivering shaderpacks to players by enabling servers to automatically download and apply shaders via a simple plugin or mod. Whether you're running a server on Fabric or looking to integrate shader functionality into your PaperMC setup, our API offers a seamless solution. Additionally, we provide an example plugin, which can be used as a standalone PaperMC plugin or serve as inspiration for custom implementations.

Available Versions

ShaderAPI 2025.3.8-1.21.4release

MC 1.21.4fabric

March 8, 2025

ShaderAPI 2024.9.5-1.21.1release

MC 1.21.1fabric

September 5, 2024

ShaderAPI 2024.9.5-1.21release

MC 1.21fabric

September 5, 2024

ShaderAPI 1.21.1release

MC 1.21.1fabric

September 2, 2024

ShaderAPI 1.21release

MC 1.21fabric

September 2, 2024

How to Install ShaderAPI 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 (1.21.4).

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.4, 1.21.1, 1.21

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

ShaderAPI 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 (1.21.4). You can switch loaders with one click in the panel.

Is ShaderAPI compatible with fabric?

ShaderAPI officially supports fabric for Minecraft 1.21.4, 1.21.1, 1.21. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with ShaderAPI – how to optimize performance?

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