AntiCheat for Minecraft 1.21.1

Built for modern PvP. Designed around server-side evidence.

Cheats have moved beyond obvious flight and speed. Today’s clients manipulate packet timing, hide combat rotations, extend attacks, and exploit legitimate movement mechanics to blend in. AntiCheat is built to catch those behaviors while giving staff the context behind every flag.

Comprehensive detection

AntiCheat includes checks for flight, speed, reach, knockback, NoPush, critical hits, scaffold, inventory movement and attacks, timer manipulation, FakeLag, boat flight, Elytra abuse, and more. Integrity checks also watch for impossible positions and inconsistent player actions.

Its Simulation Engine combines movement and combat evidence across multiple models, including physics prediction, hitbox geometry, aim patterns, attack sequences, boats, and packet replay. It accounts for legitimate mechanics such as wind charges, water, slime, honey, and knockback.

Control without the guesswork

• In-game settings GUI with clear switches for checks, simulation modules, network controls, and warnings
• Configurable responses including alerts, rubberbanding, kicks, and temporary or permanent bans
• Live evidence inspection, violation history, staff alerts, and Discord notifications
• VPN and proxy blocking plus review-only alerts for possible links to banned accounts
• Optional Paper client probe for additional client-side indicators

Modern cheat detection needs more than one threshold. AntiCheat gives server owners layered checks, useful evidence, and the control to tune protection to their community.