ModCheck

A simple mod that makes sure clients have only the mods they're supposed to have

by
1.4K Downloads
fabricmanagement
Rent Server with this Mod

About this Mod

A simple mod that makes sure your players have only the mods they're supposed to have.

Update 0.2.0 - No More ModCheckUtil

Commands have been added that should make generating the modlist much simpler.

/modcheck_off - temporarily disables modcheck so you can join with the desired client pack

/modcheck_upload - uploads the client pack list to the server and stores it

You can still use ModCheckUtil to generate the modlist if you want.

How it works

The client-side works by going through the mods folder, generating a checksum of each file and sending it all to the server when it connects.

The server then checks the modlist against it's modlist.txt file and let's player connect.

The modlist.txt is generated by ModCheckUtil.

How to use

  • put ModCheckUtil jar into your client mods folder (ModCheck mod should be included in the folder at this point)

  • run java -jar [ModCheckUtil-version].jar

  • modlist.txt file should appear in the same folder

  • all is done, if you start your server everything should work


At this point there's no config files and other fancy stuff, and I don't plan to build other versions as I don't need it.
If you want a different version, you can comment or make an Issue on the projects GitHub. Same with any ideas or errors you get.

Available Versions

ModCheck 0.2.0 - No More ModCheckUtilrelease
MC 1.20.1fabric
August 8, 2024

How to Install ModCheck on Your Server

1

Order Server

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

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.1).

3

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.20.1

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

ModCheck 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 (1.20.1). You can switch loaders with one click in the panel.

Is ModCheck compatible with fabric?

ModCheck officially supports fabric for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with ModCheck – how to optimize performance?

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

Rent Modded Server

Install ModCheck with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Required

Supported Versions

1.20.1