Open Parties and Claims Mod (1.21.11, 1.20.6) – Player Parties

Open Parties and Claims is a utility mod that adds chunk claiming, chunk forceloading, and a full player party system to Minecraft, with built-in integration for Xaero's Minimap and World Map across Fabric, Forge, NeoForge, and Quilt loaders.

Anyone who has played on a public or semi-public Minecraft server knows the frustration: you spend hours building a base, only to log in the next day and find it griefed, looted, or trampled by strangers. Traditional land-claim plugins often lock you into a single server platform, but Open Parties and Claims solves this by delivering chunk claiming and party management as a proper mod — one that works natively across Fabric, Forge, NeoForge, and Quilt. With over 14 million downloads since its initial release in June 2022, this mod by thexaero has become a go-to solution for server owners who want grief protection without abandoning their preferred mod loader. It even ties directly into Xaero's popular map mods, so players can visually manage their claims right from the world map screen.

Key Features of Open Parties and Claims

• Chunk Claiming & Forceloading — Players can claim individual chunks or drag-select entire regions to protect their builds from grief. Forceloading keeps claimed chunks active even when no player is nearby, which is essential for farms, redstone contraptions, and automated systems that need to run around the clock.
• Player Party System — The built-in party system lets players group up so that party members can interact with each other's claimed chunks freely. This removes the headache of manually whitelisting friends one by one, and it includes a dedicated party chat channel accessed with the /opm command for quick coordination.
• Xaero's Minimap & World Map Integration — Instead of relying on chat commands alone, players with Xaero's World Map can view, create, and edit claims directly on the map screen by right-clicking or drag-selecting areas. This visual approach makes managing large claim regions far more intuitive than typing coordinates into a command line.
• Permission System Support — Server owners can integrate with LuckPerms, FTB Ranks, Prometheus, or the native Forge/Fabric permission APIs to set rank-based claim limits. This means you can offer VIP players more claimable chunks without editing config files for each individual — the permission plugin handles it automatically.
• Alternative Party System Compatibility — If your server already uses Argonauts or FTB Teams for party management, Open Parties and Claims can hook into those systems instead of its own. You can even disable the default party system or claims module entirely through the config, keeping only the features you actually need.
• In-Game Configuration UI — Server operators can edit claim settings, wilderness rules, and default player configs directly through an in-game UI bound to the apostrophe key by default. Normal players get their own simplified config panel as well, reducing the need to shut down the server just to tweak a TOML file.
• Powerful API for Developers — The mod exposes a full API that lets other mods and plugins interact with both the party and chunk claim systems on both server and client sides. This makes Open Parties and Claims a strong foundation for modpack developers who want to build additional land-management features on top of an established system.

Screenshots

How to Install Open Parties and Claims

1. Install your preferred mod loader: Fabric, Forge, NeoForge, or Quilt.
2. Download the correct version of Open Parties and Claims for your Minecraft version and loader from the download section below.
3. Place the downloaded .jar file into your .minecraft/mods/ folder (or the server's mods/ folder for multiplayer).
4. For the best experience, also install Xaero's Minimap and Xaero's World Map — make sure all three mods are updated to their latest versions for compatibility.
5. Launch Minecraft, press the apostrophe key (') to open the mod UI, and configure your claim settings as needed.

Requirements & Compatibility

What's New

• Fixed a watchdog crash that occurred when claims took too long to load, improving server stability.
• Added new default exception groups for blocks and a music disc item-use exception that applies to existing configs automatically.
• Resolved an Optifine mixin crash and fixed Create mod deployers not working in unowned protected chunks like server claims.
• Added clipboard edit protection for the Create mod to prevent unauthorized edits in claimed areas.
• Fixed claim replacement checks not running properly when using map-based area claiming, and corrected a UI overlap issue with sub-config deletion labels.

Pros and Cons

Alternatives to Open Parties and Claims

• FTB Chunks — A chunk claiming mod from the FTB team that integrates tightly with the FTB ecosystem, ideal if your modpack already uses FTB Utilities and FTB Teams.
• Flan — A lightweight land-claim mod focused on simplicity, using a golden hoe and visual markers instead of chunk-based claiming for a more vanilla-adjacent experience.
• Cadmus — A newer chunk claiming mod with team support and a clean UI, offering a modern alternative for servers that want claim protection without the complexity of permission integrations.

Download Open Parties and Claims

Always download mods from official sources to stay safe.

Frequently Asked Questions

Is Open Parties and Claims compatible with Xaero's Minimap?

Yes — Open Parties and Claims has built-in integration with both Xaero's Minimap and Xaero's World Map. You can view and edit your chunk claims directly on the world map screen by right-clicking or dragging to select areas. Just make sure all mods are updated to their latest versions for full compatibility.

Can I use Open Parties and Claims on a Fabric server?

Yes — the mod supports Fabric, Forge, NeoForge, and Quilt across Minecraft versions 1.18.2 through 1.21.11. Download the version that matches your specific loader and Minecraft version. No additional API mods are required for basic functionality.

Does Open Parties and Claims work with LuckPerms?

Yes — LuckPerms is one of the natively supported permission plugins. You can use it to set rank-based claim limits, so different player groups get different numbers of claimable chunks. FTB Ranks and Prometheus are also supported out of the box.

Can I disable the party system and only use chunk claims?

Yes — the default party system or claims can each be disabled independently in the main config file. This is useful if your server already uses a separate party mod like FTB Teams or Argonauts, or if you simply do not need the party feature at all.

How do I configure Open Parties and Claims on my server?

Edit the main config file located at [world directory]/serverconfig/openpartiesandclaims-server.toml while the server is stopped. On Fabric or Quilt servers, the file may instead be at [server directory]/config/openpartiesandclaims-server.toml. Server operators can also adjust claim settings, wilderness rules, and default player configs in-game through the mod's UI by pressing the apostrophe key.

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