ModGuard
a basic server‑side anti‑cheat and mod‑protection system
- Loaders
- Fabric
- Downloads on Modrinth
- 81
- Followers on Modrinth
- 0
- version
- 1
- Updated
- March 6, 2026Mar 6
- Published
- in 2026
At a glance
Needed both in the game and on the server

Is a security and anti-cheat mod for Minecraft servers, featuring a strict mod whitelist system and real-time X-Ray detection to ensure fair gameplay. Guard your server from unauthorized client modifications and track suspicious mining activity effortlessly.
Features
Mod Whitelist System
- Client Validation - Actively validates client mods against a secure whitelist.
- Strict Enforcement - Automatically kicks players with unauthorized or missing mods and actively blocks mod-bypass attempts.
X-Ray Detection System
- Real-Time Tracking - Tracks ore-mining patterns in real-time across 9 supported ore types.
- Admin Alerts & Tools - Features persistent violation tracking and immediate admin alerts, complete with quick teleport and spectate options.
Configuration & Installation
- Easy Setup - Place
modguard-1.0.0.jarin yourmods/folder. Config files auto-generate inconfig/(modguard_config.jsonandmodguard_violations.json). - Custom Whitelist - Add your server's allowed mod names directly to
"allowedMods"in the config file. - Ore Detection Limits - Configure each ore with specific
threshold,timeWindowSeconds, andenabledtoggles. (Default examples: Diamond triggers at 10 in 300s; Ancient Debris triggers at 5 in 300s. Others are disabled by default).
Commands (OP Level 2)
- General Administration - Use
/modguard listmodsto list loaded mods or `/modguard spectate ` to stealthily observe suspects. - X-Ray Management - Control detection via
/modguard xraylist(show all settings), `/modguard xrayvalues(adjust limits), and/modguard xray enable|disable` (toggle tracking). - Violation Logs - View records with
/modguard xraylogor wipe the slate clean using/modguard xraylog clear all.
Dependencies:
- Fabric API
Server-Side & Client-Side - Required on both the server and the client. All players must install the same mod in their mods/ folder to connect; missing the mod results in an automatic kick from the server.
FAQ
How to install ModGuard?
Install Fabric for your Minecraft version, download ModGuard for the same version and loader, put the file into the mods folder and launch the game with the loader profile.
Which Minecraft versions does ModGuard support?
ModGuard has builds for Minecraft 1.20.4.
Is ModGuard needed on the server?
Needed in the game and on the server