🛡️ Kappa's AntiCheat

Kappa's AntiCheat is a lightweight, modular anti-cheat mod for Fabric servers, built to perform at scale without sacrificing reliability.
It provides essential cheat detection with configurable thresholds, actions, and full server-side control.

Features

Fly Check – Detects players hovering or staying airborne illegally

Speed Check – Flags abnormal movement speeds

Fully Configurable – Enable/disable checks, customize thresholds, and define commands to execute on violation

Config stored in config/kappasac/config.json

Server-only – Works with vanilla clients

Default Actions

When a player triggers too many violations:

Warn them in chat at a configurable threshold

Execute any command (e.g., /kick %player%, /ban %player%, etc.)

Config

{
  "checks": {
    "FlyCheck": {
      "enabled": true,
      "maxViolations": 10
    },
    "SpeedCheck": {
      "enabled": true,
      "maxViolations": 8
    }
  },
  "warningThreshold": 5,
  "commandOnMax": "kick %player% Detected cheating (%check%)"
}

Future Plans

KillAura, NoFall, Reach, and AutoClicker checks

Logging to file and violation dashboards

Commands like /ac violations

Requirements

Minecraft 1.21.5+

Fabric Loader 0.16.4+

Java 21

Need Help? Feature Requests?

Join our Discord or open an issue on GitHub