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Open Parties and Claims - EssentialsMinecraft mod for 1.21.1

Configurable commands, party chat and fine-grained claim permissions for Open Parties and Claims. Formerly OPAC - Better Commands.

server onlynewest supported 1.21.1UtilityGame MechanicsOptimization
Latest version
1.5
Minecraft
1.21.1
Loader
NeoForge
Licence
Apache-2.0
Downloads
8.0k
Updated
1 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Open Parties and Claims - Essentials servers

One click and Open Parties and Claims - Essentials is installed with the right loader, on hardware built for it.

  • 1.21.1
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version Open Parties and Claims - Essentials declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge21+declared8 Aug 2024

Download

From Open Parties and Claims - Essentials’s own host. Nothing is re-hosted here.

1.5release3 Dec 2025

opac_better_commands-1.5.jar · 14 KB · for 1.21.1

Download latest
374b14593933…
Older versions5
  • 1.429 Nov 20251.21.114 KB38 downloads604239d168ae…Get
  • 1.321 Nov 20251.21.114 KB2.2k downloads632309dbecf7…Get
  • 1.212 Nov 20251.21.114 KB37 downloads1033d0c99b89…Get
  • 1.110 Nov 20251.21.114 KB25 downloadsff393163d6ac…Get
  • 1.07 Nov 20251.21.115 KB32 downloadsc9be57362ce2…Get

Frequently asked

Does Open Parties and Claims - Essentials work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Open Parties and Claims - Essentials declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Do I need to install Open Parties and Claims - Essentials on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

Which platform or loader does Open Parties and Claims - Essentials support?

NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Open Parties and Claims - Essentials?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Open Parties and Claims - Essentials under?

Apache-2.0, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Open Parties and Claims - Essentials?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Open Parties and Claims - Essentials safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Details from Modrinth, where the author last updated it on 23 Aug 2026. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .