CurseForge · Minecraft mod

OPAC-UI

This project adds a client-side companion for Open Parties and Claims that turns its command-only party management into a full in-game GUI for members, invites, and allies.

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

Quick answer

Which OPAC-UI release should I use?

Updated today

Latest stable file opacui-neoforge-1.21.1-1.0.0.jar

Game version 1.21.1

Loader NeoForge

OPAC-UI opacui-neoforge-1.21.1-1.0.0.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.

Where it goes

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

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say

Dedicated server Source doesn’t say

Loader for this release NeoForge

Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does OPAC-UI opacui-neoforge-1.21.1-1.0.0.jar need?

opacui-neoforge-1.21.1-1.0.0.jar. Change the file and its required mods may change too.

All 1 required mods have matching files

Install Open Parties and Claims first. We found matching files for this game-version and loader setup.

Open Parties and Claims Needed by OPAC-UI opacui-neoforge-1.21.1-1.0.0.jar

required

Matching file found Matched file: open-parties-and-claims-neoforge-1.21.1-0.29.3.jar

We only count dependency files that match this setup. A file for another loader does not fill the gap.

Before you install it

Add OPAC-UI without breaking your instance.

Built for OPAC-UI opacui-neoforge-1.21.1-1.0.0.jar. Pick another file and the loader, install side or required mods may change.

01
Stick to this file

Use opacui-neoforge-1.21.1-1.0.0.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
02
Bring the mods it needs

Install Open Parties and Claims first. We found matching files for this game-version and loader setup.
03
Put it on the correct side

The project page does not say whether this file belongs on the client, dedicated server, or both.
04
Pick the file you checked

Use the “Get this file” button beside opacui-neoforge-1.21.1-1.0.0.jar. It opens that exact file at the source.

About this project

What does OPAC-UI add?

opac-ui

A client-side mod that adds an in-game party management GUI for Open Parties and Claims. Press P in-game to open the party manager: create or join a party, manage members (promote, demote, kick, transfer ownership), send and revoke invites, and manage allied parties, all from one screen instead of chat commands.

Branches

This project is maintained across multiple Minecraft versions as separate branches, since each version needs its own dependency versions and sometimes its own UI approach entirely.

Branch	Minecraft	Loaders	UI built on	Status
`1.20.1/main`	1.20.1	Fabric	Cloth Config	Stable
`1.21.1/main`	1.21.1	Fabric, Forge, NeoForge	Cloth Config	Known issue: black background when Menu Background Blurriness is enabled (workaround: turn it off)
`26.1.2/main`	26.1.2	Fabric, Forge, NeoForge	Vanilla widgets (no Cloth Config)	Unreleased (Stable)

Cloth Config was dropped starting with the 26.1.2 branch since it no longer ships a Forge build at all past a certain version, so the party screen there is built entirely with Minecraft's own UI components instead.

Check the README and CHANGELOG on each branch for exact requirements and version-specific notes.