KoHs Offhand Whitelist
Client-side offhand whitelist with searchable items and custom presets.
About this Mod
KoHs Offhand Whitelist
KoHs Offhand Whitelist is a client-side Fabric mod that controls which items you can move into the offhand slot.
Instead of allowing every item, the mod uses a whitelist.
If an item is not allowed, the mod blocks offhand insertion/swap actions for that item.
What this mod does
- Blocks non-whitelisted items from being placed in offhand
- Allows editing the whitelist from an in-game GUI
- Shows all Minecraft items (including potion variants) with search
- Lets you quickly add/remove items with
+and- - Supports presets (built-in + custom)
- Auto-saves changes instantly (no manual save needed)
GUI Tabs
- Whitelist: manage allowed and non-allowed items
- Create Preset: build/edit a preset from selected items
- Custom Presets: use, edit, or delete saved presets
- Report Issues: support/help section with Discord button
Why use it
Useful for PvP and utility clients when you want strict offhand control (for example only totem, shield, crystals, specific potions, etc.).
Support
For support or help creating mods/plugins:
https://discord.gg/TpBbyxhFSF
Available Versions
How to Install KoHs Offhand Whitelist on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "KoHs Offhand Whitelist". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11, 1.21.10, 1.21.9 (+9 more)
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
KoHs Offhand Whitelist server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.
Is KoHs Offhand Whitelist compatible with fabric?
KoHs Offhand Whitelist officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with KoHs Offhand Whitelist – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if KoHs Offhand Whitelist consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install KoHs Offhand Whitelist with just one click on your server.