
ModsJava
LightAC
This project adds sub-tick combat validation to prevent 0-tick shield breaking and aura exploits on 1.21.11 servers.
⬇ Download on ModrinthLightAC - The Lightweight Combat Guardian
LightAC is a modern anticheat built for performance and accuracy. Designed specifically for competitive PvP servers on version 1.21.11, it focuses on detecting complex combat exploits without ruining the player experience.
Key Features:
- 0-Tick Detection: Advanced checks for instant weapon/attribute swapping (Shield-breaking exploits).
- Zero Hit-Delay: Optimized packet processing to ensure combat feels smooth.
- Smart Combat Checks: Robust detection for Reach and KillAura with sub-tick accuracy.
- Fast Fly Detection: Responsive movement checks that catch cheaters much faster than vanilla.
- Low Server Impact: Lightweight code designed for high-player counts.
Note: Optimized for standard gameplay; extreme ping (1000ms+) may trigger safety setbacks.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as LightAC-1.0.0.jar — drop this file into the mods folder
- Download size: 29 KB
- Download link checked 24 Aug 2026 — working
These come from our own check of the pack file, not from the source page.