OPAC-UI
by ImEden6
With OPAC-UI installed, a player presses P to open a party manager screen for Open Parties and Claims instead of typing commands.
What it does
OPAC-UI is a client-side companion to Open Parties and Claims. Open Parties and Claims handles party management through commands only, and this mod adds an in-game graphical interface for the same party actions. The screen is built with Cloth Config's tabbed-list UI on the earlier branches, and with Minecraft's own UI components from 26.1.2 onward, where Cloth Config no longer ships a Forge build.
When a player is not in a party, the screen shows a Create Party button. When a player is in a party, the screen shows a tabbed view with three tabs. The Members tab lists members in rank order and offers promote, demote, kick and ownership transfer, limited by the player's permissions. The key binding can be changed in the game's key settings. Fabric API is required on Fabric, and Open Parties and Claims is required on every loader.
The mod runs only on the client, so servers do not need it and players can join a server without installing it. It is released under the GNU Lesser General Public License v3.0 only and is open source, with public source code and an issue tracker. Files are published for Fabric, Forge and NeoForge, across the five game versions 1.20.1, 1.21.1, 26.1.2, 26.2 and 26.3, with 1.0.0 for 26.3 as the latest file on each loader.
Key features
Party creation button
A player outside a party sees a button on the screen that creates one without a command.
Three-tab party view
A player inside a party gets a screen with three tabs for managing the party.
Ranked member list
The Members tab shows every member in rank order with the actions their permissions allow.
Member management actions
Promote, demote, kick and ownership transfer are available from the member list, depending on permissions.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Use cases
Who it’s for: Players on Open Parties and Claims servers who want a visual party screen, and modpack authors who include Open Parties and Claims and want a graphical front end for its party features.
How it compares
OPAC Welcome Suppressor is also client-side only and open source under the MIT License, but it covers Fabric, Forge and NeoForge for 1.20 – 1.21.11 and changes welcome messages rather than party management. OPAC Bonus Claims runs on client and server, is licensed under the MIT License, is not open source and supports 1.19.2 – 1.21.1 on Fabric, Forge and NeoForge.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| OPAC-UI | Fabric, Forge and NeoForge | 1.20.1 – 26.3 | Client-side only | 2026-10-07 |
| OPAC Welcome Suppressor | Fabric, Forge and NeoForge | 1.20 – 1.21.11 | Client-side only | 2025-06-30 |
| OPAC Bonus Claims | Fabric, Forge and NeoForge | 1.19.2 – 1.21.1 | Client and server | 2026-04-22 |
Questions
Does OPAC-UI need Open Parties and Claims?
Does Fabric players need Fabric API for OPAC-UI?
Does the server need OPAC-UI installed?
In the catalog
OPAC-UI is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 8,071 mods support Minecraft 26.3.
More from ImEden6
Similar mods
What the author says
A client-side mod that adds an in-game party management GUI for Open Parties and Claims using Cloth Config's tabbed-list UI. Press P (configurable in key bindings) to open the party manager.
Official listing
- Modrinth page
- modrinth.com/mod/opac-ui
- Owner
- ImEden6
- Published
- 2026-07-31
- Updated on Modrinth
- 2026-10-07
- Facts verified
- 2026-10-15