SlotLock
by nicomods
With SlotLock, a player can mark inventory slots as locked so that items in them cannot be dropped, moved or shift-clicked by accident.
What it does
SlotLock is a lightweight Fabric utility that lets a player lock individual inventory slots. A locked slot blocks dropping, quick-moving and shift-clicking, so valuable gear stays where it was placed. Locking and releasing a slot is done with Ctrl and a left click on it, and a padlock icon overlay marks each locked slot so the state is visible at a glance.
Dropping a locked item takes a deliberate step: the player must press Q three times, and each press shows a warning message and plays a sound. The locked slots are saved with the player data, so they remain locked after a death or a world reload. The mod is built to protect valuable gear without needing complex configuration, and it only affects the player's own inventory.
SlotLock is published for Fabric only, with a single build for 26.1.2, and it runs on the client alone. Servers and other players do not need it. The mod is released under All rights reserved and is not open source.
Key features
Inventory slot locking
Any inventory slot can be locked with Ctrl and a left click, which blocks dropping and moving the item it holds.
Triple-press drop confirmation
Dropping a locked item requires pressing Q three times, with a warning message and sound on each press.
Blocked quick-moving
Shift-clicking or quick-moving a locked item is stopped, so an accidental click does not send gear into a chest.
Padlock icon overlay
A padlock drawn over each locked slot shows which slots are protected without opening any menu.
Persistent locks
Locked slots are kept across player deaths and world reloads, so protection does not have to be set again.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Safe Offhand is also a Fabric client-side mod, open source under the MIT License, and it covers 1.21.8 – 26.3, so it reaches more game versions than SlotLock. LockSlot is a Fabric client-side mod under the MIT License for 1.21.4 – 1.21.11, and it is not open source. Reserved Slots is open source under the Apache License 2.0 and can run on a client or a server, for 1.21.11 – 26.1.2.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| SlotLock | Fabric | 26.1.2 | Client-side only | 2026-06-13 |
| Safe Offhand | Fabric | 1.21.8 – 26.3 | Client-side only | 2026-10-06 |
| LockSlot | Fabric | 1.21.4 – 1.21.11 | Client-side only | 2026-08-10 |
| Reserved Slots | Fabric | 1.21.11 – 26.1.2 | Client or server, optional | 2026-05-26 |
Questions
Does SlotLock need Fabric API?
Does the server need SlotLock installed?
How many presses does dropping a locked item take?
Are locked slots kept after dying?
In the catalog
SlotLock is one of 17,631 Equipment mods on ModsFinder, and one of 8,894 Equipment mods for Fabric. 15,189 mods support Minecraft 26.1.2.
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What the author says
This is a simple mod to lock inventory slots and stop you from losing items by accident! I built this to easily protect your valuable gear and items without needing complex configurations. It features clean visual cues, a padlock icon overlay, and a solid safety confirmation to keep your items safe! Built by…
Official listing
- Modrinth page
- modrinth.com/mod/slot_lock
- Owner
- nicomods
- Published
- 2026-06-13
- Updated on Modrinth
- 2026-06-13
- Facts verified
- 2026-10-15