KoHs Offhand Whitelist
by zymery_dria
KoHs Offhand Whitelist controls which items can be placed in the offhand slot, blocking anything not on a configured whitelist.
What it does
A client-side Fabric mod that governs the offhand slot. Rather than letting every item through, it checks each item against a whitelist: anything not on the list is refused when a player tries to place or swap it into the offhand. Only the client needs the mod, so a player can run it on a server that does not have it.
The whitelist is edited in an in-game screen. Minecraft items, including potion variants, can be searched, and a + control adds or removes an item in a single step. Built-in presets are available alongside custom presets, which can be created and edited from the selected items. Changes save automatically, while a manual save is also possible.
Fabric API and Mod Menu are required dependencies. The mod is released under All rights reserved and is not open source. Files exist for 1.21 – 1.21.11 across 12 release versions, and the latest Fabric file, 1.0.2, targets 1.21.11 and was published on 2026-03-17.
Key features
Whitelist of offhand items
Only items on the configured whitelist can be moved into the offhand slot, and everything else is refused.
Searchable item list
The in-game editor lists Minecraft items with search, including potion variants, so entries are simple to locate.
Quick add and remove
A + control toggles an item on or off the whitelist without opening a separate menu.
Built-in and custom presets
Ready-made presets are included, and players can build their own preset from the selected items.
Automatic saving
Changes to the whitelist are stored as soon as they are made, with a manual save also available.
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
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 who want to restrict what can be placed in the offhand slot, on any server that accepts the mod on the client side.
How it compares
Offhand place toggle is a client-side Fabric mod for 1.21.8 with All rights reserved, so it covers one version rather than a range. Totem Offhand Warning is a client-side Fabric mod for 1.21.11 under the MIT License, and Hot Experience is client-side for 1.21 and open source under the MIT License. Shift2offhand is server-side only and is for 1.21.11, so it differs in where it runs.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| KoHs Offhand Whitelist | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-03-17 |
| Offhand place toggle | Fabric | 1.21.8 | Client-side only | 2026-04-22 |
| Totem Offhand Warning | Fabric | 1.21.11 | Client-side only | 2026-05-27 |
| Shift2offhand | Fabric | 1.21.11 | Server-side only | 2026-03-14 |
| Hot Experience | Fabric | 1.21 | Client-side only | 2024-08-03 |
Questions
Does KoHs Offhand Whitelist need Fabric API?
Does the server need KoHs Offhand Whitelist?
Which game versions does KoHs Offhand Whitelist support?
In the catalog
KoHs Offhand Whitelist is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from zymery_dria
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What the author says
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.
Official listing
- Modrinth page
- modrinth.com/mod/kohs-offhand-whitelist
- Owner
- zymery_dria
- Published
- 2026-03-02
- Updated on Modrinth
- 2026-03-17
- Facts verified
- 2026-10-15