Panda Anti-Dupe

Panda Anti-Dupe

A simple drop-in mod to prevent all forms of duping. TNT-Duping, Gravity block duping, and much more will not work with this mod enabled.

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6.5K Downloads
fabricgame-mechanicsmanagementutility
Rent Server with this Mod

About this Mod

PandaAntiDupe

Description

A simple drop-in plugin to prevent all forms of duping. This will prevent TNT Duping, Trident Dupe, Gravity block duping, and various other forms of duplicating items.
(Some dupes patched by this mod may already be fixed by Mojang, feel free to open an issue)

Configuring

config/PandaAntiDupe.json generated at runtime, a true/false entry for each dupe patch exists

{
  "BookDupe": true,
  "ShulkerBoxDupe": true,
  "RailDupe": true,
  "HorseQuickMoveDupe": true,
  "StackSplitDupe": true,
  "HopperDupe": true,
  "PistonDupe": true,  //this is the TNTDuping one
  "EntityDimensionDupe": true,
  "TridentDupe": true,
  "BeeDupe": true,
  "TripwireDupe": true,
  "LecternDupe": true,
  "TripwireHookDupe": true,
  "GravityBlockDupe": true,
  "NBTListDupe": true
}

Simply set to false to disable

Try it out

hardcoreanarchy.gay (Deathban Anarchy)
sky.hardcoreanarchy.gay (Skyblock Anarchy)

Support

Support discord here!

License

CC0

Available Versions

Panda Anti-Dupe 1.1.1_26.1.1release
MC 26.1.1, 26.1.2fabric
June 7, 2026
Panda Anti-Dupe 1.1.0_1.21.11release
MC 1.21.11fabric
December 12, 2025
Panda Anti-Dupe 1.1.0_1.21.9+1.21.10release
MC 1.21.9, 1.21.10fabric
October 9, 2025
Panda Anti-Dupe 1.1.0_1.21.1release
MC 1.21.1fabric
July 21, 2025
PandaAntiDupe 1.1.0_1.21.6+1.21.7release
MC 1.21.6, 1.21.7, 1.21.8fabric
July 2, 2025

How to Install Panda Anti-Dupe on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.1.2).

3

Install Mod

Open the mod browser in the dashboard and search for "Panda Anti-Dupe". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

26.1.2, 26.1.1, 1.21.11 (+8 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Panda Anti-Dupe server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1.2). You can switch loaders with one click in the panel.

Is Panda Anti-Dupe compatible with fabric?

Panda Anti-Dupe officially supports fabric for Minecraft 26.1.2, 26.1.1, 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Panda Anti-Dupe – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Panda Anti-Dupe consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Panda Anti-Dupe with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
Creative Commons Zero v1.0 Universal
Server-side
Required

Supported Versions

26.1.226.1.11.21.111.21.101.21.91.21.81.21.71.21.61.21.51.21.4+1 more