ModsFinder

AntiDupe

by Wesley1808

AntiDupe is a server-side mod that targets item duplication exploits, so players cannot multiply items through known glitches.

FabricNeoForgeServer-side onlyMIT LicenseOpen source1.20.5 – 1.21.1

What it does

AntiDupe works only on the server, so players who join need nothing installed. Its stated aim is to fix duplication exploits, and the author notes a book duplication case from the 1.20.5 – 1.21.1 range that is handled by the patch. Builds are published for Fabric and NeoForge, released under the MIT License and open source, with the latest file 1.0+1.21.1 for 1.21.1 dated 2024-08-31.

Key features

  1. Duplication fix

    Targets item duplication exploits that let players multiply items beyond normal play.

  2. Book duplication handling

    Covers a book duplication method that used a client-side book quill to copy items.

  3. Server-side operation

    The server runs the fix alone, and clients join without any extra installation.

Compatibility

Latest build for each game version and loader.

1.21.11.0+1.21.11.0+1.21.1
1.211.0+1.21.11.0+1.21.1
1.20.61.0+1.21.11.0+1.21.1
1.20.51.0+1.21.11.0+1.21.1
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

Adventures in Time: Anti-Duplication is a Fabric mod for 1.20.1, server required and client optional, under All rights reserved. Aeronautics: Dupe fix is a NeoForge mod for 1.21.1, server-side only, open source under the MIT License. Effectification is client and server, open source under the MIT License, and covers Fabric, Forge and NeoForge for 1.20.1 – 1.21.1.

ModLoadersGame versionsEnvironmentUpdated
AntiDupeFabric and NeoForge1.20.5 – 1.21.1Server-side only2024-08-31
Adventures in Time: Anti-DuplicationFabric1.20.1Server required, client optional2026-07-19
Aeronautics: Dupe fixNeoForge1.21.1Server-side only2026-07-28
Effectification [Effect Unification]Fabric, Forge and NeoForge1.20.1 – 1.21.1Client and server2026-04-09

Questions

Does AntiDupe need to be installed on the client?

No. It runs on the server alone, so players need nothing extra to join.

Which loaders does AntiDupe support?

Fabric and NeoForge. Files exist for 1.20.5, 1.20.6, 1.21 and 1.21.1.

In the catalog

AntiDupe is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 32,366 mods support Minecraft 1.21.1.

Management mods8,016Fabric modsMods for 1.21.132,366

More from Wesley1808

All projects
ServerCore1.17.1 – 26.3FastRTP | Random Teleport1.19.2 – 26.3Advanced Chat1.19.3 – 26.3Nylon1.20.2 – 26.2

Similar mods

Cherished Worlds1.12.2 – 26.3Default Options1.18 – 26.3Axiom1.20 – 26.3Resourcify1.8.9 – 26.3Rebind Narrator1.16.1 – 26.1.2Paxi1.19.2 – 26.1.2

What the author says

A mod that aims to fix duplication exploits.
Wesley1808, on the Modrinth page

Official listing

Owner
Wesley1808
Published
2024-08-31
Updated on Modrinth
2024-08-31
Facts verified
2026-10-15

Tags

ManagementUtility
Open on ModrinthCompare