Offhander
by Smartin-b
Offhander lets players bind a dedicated key that makes an interaction use the offhand slot, so block and item actions can be split between the two hands.
What it does
Offhander adds a keybind named Offhand bindable Mainhand. While the key is held, interactions with blocks and with the selected slot are routed through the offhand, and the mainhand is left alone. Interaction checks for block buttons, the selected hotbar slot and the offhand are covered, so each case behaves on its own.
Installation needs Fabric API on Fabric and Quilt. The mod is client-side only, so only the client needs it and servers run without it. Builds are published for Fabric, Forge, NeoForge and Quilt across 19 release versions, 1.20 – 1.21.11, and the code is open source under the MIT License.
Key features
Offhand bindable Mainhand key
A dedicated keybind lets a player switch an interaction to the offhand without changing the held item.
Block interaction buttons
Interactions with block buttons follow the offhand routing, so pressing them does not use the mainhand.
Selected slot interaction
Use actions on the selected hotbar slot can be sent through the offhand instead of the mainhand.
Offhand interaction checks
The offhand gets its own interaction check, so each hand's use is tested separately.
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
1.20.x7 of 7 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 1
Use cases
Placing blocks while holding a tool
A player who keeps a tool in the mainhand can bind the key and place blocks from the offhand.
Using buttons without losing the held item
Pressing a block button through the offhand keeps the mainhand item in place.
Who it’s for: Players who use the offhand slot for block and item actions in single-player or on a server they join.
How it compares
Farmer's Delight Offhand Cutting Board Interaction is a Forge and NeoForge mod for 1.20.1 – 1.21.1, with a client and server environment and the MIT License, and it is not open source. Interaction Editor works on Fabric, Forge, NeoForge and Quilt for 1.21.6 – 26.3, is server required with the client optional, and is under All rights reserved. Antisocial runs on Fabric and Quilt for 1.19 – 1.21.1 as a client-side only mod under the MIT License, and is open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Offhander | Fabric, Forge, NeoForge and Quilt | 1.20 – 1.21.11 | Client-side only | 2026-09-04 |
| Farmer's Delight Offhand Cutting Board Interaction | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-06-08 |
| Interaction Editor | Fabric, Forge, NeoForge and Quilt | 1.21.6 – 26.3 | Server required, client optional | 2026-08-16 |
| Antisocial | Fabric and Quilt | 1.19 – 1.21.1 | Client-side only | 2024-07-23 |
Questions
Does Offhander need Fabric API?
Does the server need Offhander?
Which game versions does Offhander support?
In the catalog
Offhander is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from Smartin-b
Similar mods
Official listing
- Modrinth page
- modrinth.com/mod/offhander
- Owner
- Smartin-b
- Published
- 2024-07-13
- Updated on Modrinth
- 2026-09-04
- Facts verified
- 2026-10-15