Fatfingert
by AlmondsMilk
Fatfingert keeps a chosen hotbar or offhand slot from receiving the wrong item, blocking mistaken clicks, swaps and drops before they happen in the inventory screen.
What it does
The mod lets players reserve specific hotbar slots and the offhand for specific items. When an input would place a different item in a reserved slot, the input is cancelled and nothing else changes. This covers shift-clicks into chests, shulker boxes and other containers, pressing F to swap hands, and clicks that would pull a reserved item back out, so a totem or shield stays where it belongs.
Rules are organized into presets, so different setups can be kept for different situations and switched with a single action. One preset reserves the offhand for a totem, and the default none preset gives stock behavior. A toggle turns the mod off without losing the presets. Presets can be created, renamed and deleted in the in-game menu, and the settings are stored in a plain readable JSON file in the game folder for players who prefer to edit them by hand.
Fatfingert is a Fabric mod for Minecraft 26.1.2 and works with Fabric Loader and Fabric API. It is client-side only, so only the player needs it, and the server does not. Builds cover 1.21.11 – 26.2, with 3.1.0 for 26.2 as the latest file. The code is under the MIT License and is open source.
Key features
Reserved hotbar and offhand slots
Any hotbar slot or the offhand can be reserved for a chosen item, so other items cannot be placed there.
Shift-click protection
Shift-clicks into chests, shulker boxes and the player inventory are checked against reserved slots before they land.
Preset switching
Rule sets are saved as presets and can be switched in one step for different playing situations.
Input cancellation only
The mod only cancels a mistaken input. It does not automate actions, send input for the player or read data.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Protecting a totem in the offhand
A player who keeps a totem of undying in the offhand can stop a stray click or an F swap from replacing it during a fight.
Keeping tools in the hotbar
Reserved hotbar slots keep a weapon or a tool in place while storage is emptied with shift-clicks.
Who it’s for: Players who often misplace items by accident in the inventory screen, including PvP players who keep specific gear in fixed slots.
Questions
Does Fatfingert need to be installed on the server?
What does Fatfingert require?
Where are the settings stored?
What the author says
It catches all of this before it happens, in any inventory screen. Whether it's your own inventory, chests, shulker boxes, anywhere. Rules are organized into presets, so you can keep different setups for different situations and switch between them with one click. A preset for reserving your offhand for a totem of…
Official listing
- Modrinth page
- modrinth.com/mod/fatfingert
- Owner
- AlmondsMilk
- Published
- 2026-08-05
- Updated on Modrinth
- 2026-09-22
- Facts verified
- 2026-10-15