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OPAC-Fixes project artwork

Modrinth · Minecraft mod

OPAC-Fixes

A Fabric Minecraft mod that provides claim protection compatibility fixes for Open Parties and Claims (OPAC) when used alongside other popular mods.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which OPAC-Fixes release should I use?

Updated last month
Latest stable file 1.1.5
Game version 1.20.1
Loader Fabric

OPAC-Fixes 1.1.5 targets 1.20.1 with Fabric. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.

Where it goes

Is OPAC-Fixes required on the client, server, or both?

Installation on the client is optional. Installation on the dedicated server is optional.

Client Optional
Dedicated server Optional
Loader for this release Fabric
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source marks this as usable on both the client and server.

Understand client and server requirements Read the Minecraft installation guide

What else does OPAC-Fixes 1.1.5 need?

1.1.5. Change the file and its required mods may change too.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add OPAC-Fixes without breaking your instance.

Built for OPAC-Fixes 1.1.5. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use 1.1.5. It targets 1.20.1 with Fabric; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    This file does not list any required mods. Do not add a library just because a different file uses it.

  3. 03

    Put it on the correct side

    Installation on the client is optional. Installation on the dedicated server is optional.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside 1.1.5. It opens that exact file at the source.

About this project

What does OPAC-Fixes add?

OPAC Fixes

A Fabric Minecraft mod that provides claim protection compatibility fixes for Open Parties and Claims (OPAC) when used alongside other popular mods.

Overview

Some mods implement custom explosion or block placement/breaking mechanics that bypass standard Fabric event listeners, allowing players or mobs to bypass OPAC claims protection. This mod surgically intercepts these behaviors to ensure that claims remain protected.

Features

  • Mutant Monsters: Prevents mutated explosions (e.g. Mutant Creepers) from destroying blocks and harming entities inside protected claims.
  • Supplementaries: Prevents Red Merchants' bombs from bypass griefing blocks and entities in protected claims.
  • Botania: Prevents the Ring of Loki from bypass-placing or bypass-breaking blocks inside protected claims using blueprints.
  • Conditional Loading: Compatibility mixins for Mutant Monsters, Supplementaries, and Botania only load if the respective mods are detected at runtime.

Installation

  1. Ensure you have Fabric Loader and Fabric API installed for Minecraft 1.20.1.
  2. Requires Open Parties and Claims (OPAC) to be present.
  3. Drop this mod into your mods folder.

Project description from Modrinth.

Pick your setup

OPAC-Fixes by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

6 available setups

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files

OPAC-Fixes versions and loaders

5 of 5 releases match

Looking for an older file? The official Modrinth project page is in Resources.

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