Locked In Slots
by Fuzs
Locked In Slots lets players lock inventory and hotbar slots so that the items inside stay where they are until the lock is released.
What it does
Hovering a slot and pressing a configurable key toggles its locked state. Locked slots block item pickup, moving items out, swapping in other items and dropping through the Q key, while stackable items still receive matching additions. Tooltips can show the key needed to release a protected slot, and the set of restricted slot types and lock timing can be adjusted in the configuration.
The mod helps protect tools, weapons and important hotbar slots during busy play, when a pickaxe or sword could be dropped or replaced by accident. It is a client-side only mod, so it changes nothing on the server, works in single-player and on multiplayer servers, and needs no install on the server side.
Installation needs Fabric API, Forge Config API Port and Puzzles Lib, with Forge Config Screens optional for its settings screen. The mod is published for Fabric, Forge and NeoForge with files for 1.20.4 – 26.3, and the code is released under the Mozilla Public License 2.0, so it is open source.
Key features
Slot locking by key
Hovering over any inventory slot and pressing a set key toggles its lock, and the same works on the hotbar.
Pickup and swap protection
Locked items cannot be picked up, moved out of their slot or replaced with other items.
Drop prevention
Holding Q over a locked slot no longer drops its contents, which guards against accidental drops.
Stack growth and hints
Locked stacks still accept matching items, and optional tooltips show the key needed to release a protected slot.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x7 of 7 versions with builds
1.20.x1 of 1 version 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 3
Use cases
Who it’s for: Players who often move items quickly or fear losing important tools to an accidental click, drop or swap in the inventory.
How it compares
DropGuard is a client-side only Fabric mod under All rights reserved, not open source, published for 1.21 – 26.2. Pick Block Lock is open source under the MIT License, runs on Fabric, NeoForge and Quilt in the client and server environment, and covers 1.21.11 – 26.2. Locked In Slots is client-side only, open source under the Mozilla Public License 2.0, and spans 1.20.4 – 26.3 on Fabric, Forge and NeoForge.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Locked In Slots | Fabric, Forge and NeoForge | 1.20.4 – 26.3 | Client-side only | 2026-09-23 |
| DropGuard | Fabric | 1.21 – 26.2 | Client-side only | 2026-10-05 |
| Pick Block Lock | Fabric, NeoForge and Quilt | 1.21.11 – 26.2 | Client and server | 2026-07-13 |
Questions
Does Locked In Slots need Fabric API on Forge?
Must the mod be installed on the server?
Can a locked slot still receive items?
In the catalog
Locked In Slots is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 8,071 mods support Minecraft 26.3.
More from Fuzs
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What the author says
Locked In Slots helps protect your most important items from accidental inventory mistakes. 🔒 Simply hover a slot and press the lock key to toggle its locked state. Locked slots keep valuable tools, weapons, and other items safely in place until you decide otherwise. No more accidentally dropping your pickaxe…
Official listing
- Modrinth page
- modrinth.com/mod/locked-in-slots
- Owner
- Fuzs
- Published
- 2026-06-03
- Updated on Modrinth
- 2026-09-23
- Facts verified
- 2026-10-15