Inertia Anti Cheat

Inertia Anti Cheat

Stop people from using unwanted mods on your server!

by
94.1K Downloads
fabricquiltmanagementutility
Rent Server with this Mod

Screenshots

Inertia Anti Cheat Screenshot 1
Inertia Anti Cheat Screenshot 2

About this Mod

Inertia Anti Cheat

Stop people from using unwanted mods on your server!

Require players to use your modpack on your server!

This was heavily inspired and named after https://www.curseforge.com/minecraft/mc-mods/kinetic-anti-cheat

How does it work?

When someone joins your server, the server mod will ask for the client's mod list.

If the client does not respond to this request (most likely because the client mod is not installed), the server will kick the player.

If the client mod responds, the server mod will check the mod list against a configurable blacklist/whitelist, or a hash for mod packs! It will kick the player if the mod list is not acceptable.

Is this foolproof?

Probably not. This mod was only designed to combat script kiddies, and does not use any special method to check the verity of the mod list. In short, it would take a bit of effort to bypass this, but it will stop most regular cheaters from joining.

At the moment, resource packs are not checked. This allows people to use advantageous resource packs like Xray resource packs on the server. You will need to install an anti-xray mod yourself.

Installation

Check here for more details.

Permissions

You are free to use this in modpacks or wherever you like!

I would appreciate it if you could give a link back to this page or the project's github.

Available Versions

Inertia Anti Cheat 1.1.1.2release
MC 1.21.11fabric, quilt
December 11, 2025
Inertia Anti Cheat 1.1.1.1release
MC 1.21.10fabric, quilt
October 17, 2025
Inertia Anti Cheat 1.1.1release
MC 1.21.9fabric, quilt
October 17, 2025
Inertia Anti Cheat 1.1.0.4release
MC 1.21.8fabric, quilt
July 27, 2025
Inertia Anti Cheat 1.1.0.3release
MC 1.21.7fabric, quilt
July 2, 2025

How to Install Inertia Anti Cheat 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 (1.21.11).

3

Install Mod

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

Compatibility

Mod Loaders

fabricquilt

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+25 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Inertia Anti Cheat 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 (1.21.11). You can switch loaders with one click in the panel.

Is Inertia Anti Cheat compatible with fabric and quilt?

Inertia Anti Cheat officially supports fabric, quilt for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Inertia Anti Cheat – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Inertia Anti Cheat 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 Inertia Anti Cheat 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
GNU General Public License v3.0 only
Server-side
Required

Supported Versions

1.21.111.21.101.21.91.21.81.21.71.21.61.21.51.21.41.21.31.21.1+18 more