ModsFinder

Slot Lock

by UDPSendToFailed

Slot Lock lets a player lock inventory slots so that a locked item cannot be dropped, moved or swapped by accident.

FabricClient-side onlyMIT LicenseOpen source1.21.11 – 26.1

What it does

Slot Lock marks chosen inventory slots as locked, which protects items such as a sword from being dropped, moved, or swapped into the wrong place, including armor pieces that could be equipped by mistake. A player hovers the mouse over a slot and presses the lock hotkey, and a second press releases it. The hotkey can be changed in the Options menu under Key Binds, and it works with selected hotbar slots.

The mod is client-side only, so it needs to be installed by the player and not on a server. It requires Fabric API and is published for Fabric on 1.21.11 and 26.1, under the MIT License, and the source code is public.

Key features

  1. Locking inventory slots

    Hovering over a slot and pressing the hotkey keeps that item from being dropped or moved.

  2. Toggle lock hotkey

    A single key toggles the lock on the hovered slot, so the same key both locks and releases it.

  3. Configurable key binding

    The lock key can be reassigned in the Options menu under Key Binds.

Compatibility

Latest build for each game version and loader.

26.11.0.1
1.21.111.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

Questions

Does Slot Lock need Fabric API?

Yes. Fabric API is a required dependency and must be installed alongside Slot Lock on Fabric.

Does Slot Lock need to be installed on a server?

No. Players add it to their own game, and a server needs no copy.

In the catalog

Slot Lock is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 11,959 mods support Minecraft 26.1.

Utility mods36,990Fabric modsMods for 26.111,959

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What the author says

This simple mod allows you to lock any inventory slot by pressing a key to avoid accidentally dropping your sword, moving specific items into containers, equipping the wrong piece of armor, etc. Simply hover your mouse over a slot you want to lock and press the hotkey. Also works with selected hotbar slots. The…
UDPSendToFailed, on the Modrinth page

Official listing

Owner
UDPSendToFailed
Published
2026-03-14
Updated on Modrinth
2026-03-31
Facts verified
2026-10-15

Tags

Utility
Open on ModrinthCompare