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[Skript] AntiDupe / InvGuard

Java mod listed for Minecraft 1.20–1.21. Download on the author's site.

InvGuard — Ultimate Anti-Exploit & InvWalk System ​ The most advanced, lightweight, and zero-overhead inventory protection and anti-dupe system for…

⬇ Download on Spigot
InvGuard — Ultimate Anti-Exploit & InvWalk System​

The most advanced, lightweight, and zero-overhead inventory protection and anti-dupe system for Minecraft 1.21+.​

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Core Protections & Checks
InvGuard continuously monitors player states and packets to ensure absolute server integrity with zero disk-write overhead (volatile RAM tracking). Key protections include:

* Type A & B (InvWalk Protection): Detects and flags excessive movement while a personal inventory or a container (chest, shulker box, etc.) is open.
* Type C & D (Chat & Command Blocking): Cancels commands and chat messages sent while interacting with inventories or containers.
* Type E (Combat Mitigation): Prevents players from attacking entities or targets while having an active inventory open.
* Type F (Container Reach / TP Dupe): Blocks inventory manipulation if a player teleports away or gets further than 6.5 blocks from the opened container.
* Type G (Portal & Death Dupe): Prevents opening inventories or interacting with containers while inside Nether/End portals or upon death.
* Type H & I (Desync & Packet Exploits): Advanced protection against client-side desync utilities (like UI-Utils Desync and Close without Packet), automatically cleaning up ghost items.
* Type M (Packet Burst / Macro Check): Intelligent click-rate limiter that blocks autoclickers and packet spam without interfering with legitimate double-clicks or fast shift-clicks.
* Type Y & Z (PRO Only - World & Entity Interaction Blocks): Instantly cancels and flags attempts to break blocks or click entities while an inventory is open.
* Dynamic Ping Compensation: Automatically applies grace periods and buffer thresholds for high-ping players or spoofers to completely eliminate false positives.

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Requirements & Dependencies
To run InvGuard successfully on your Minecraft server, make sure you have:
1. Minecraft Server: Paper / Purpur 1.21+ (recommended).
2. Skript: The core Skript plugin.
3. No heavy addons required! (InvGuard is 100% native Vanilla Skript compatible).

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Free vs. PRO Version
Choose the right protection level for your server community:

Feature / Check
Free Version​
PRO Version (€2.00 EUR)​
Core Checks (A to G, H, I, M)
Included​
Included​
In-Game Control Center GUI (/ig)
Included​
Included​
Custom Prefix & Permission Nodes
Included​
Included​
Block & Entity Checks (Y, Z)
Not Included (PRO Only)​
Included​
Persistent Player Violation Logs (/ig logs)
Not Included​
Included​


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How to Get InvGuard PRO (€2.00)
You can unlock the full PRO version and support future updates through our official community:

Click here to join our Discord Server and get PRO!​
*(Available for just €2.00 EUR)*

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Installation Instructions
1. Download the `.sk` file from the GitHub Releases page.
2. Place the file inside your plugins/Skript/scripts/ folder.
3. Run /sk reload <filename> or restart your server.
4. Enjoy a secure, dupe-free server environment!
Quick facts

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

[Skript] AntiDupe / InvGuard is a free Minecraft Java mod. Compatible with Minecraft 1.20, 1.20.6, 1.21. Downloaded 37 times (via Spigot). Download it and open it directly in the game.

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