Slot Lock

Lock inventory slots to prevent accidental drops, moves, and swaps.

572 Downloads

fabricutility

Rent Server with this Mod

Screenshots

About this Mod

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 hotkey is configurable in Options -> Controls -> Key Binds -> Inventory -> Toggle Slot Lock

Available Versions

Slot Lock 1.0.1release

MC 26.1fabric

March 31, 2026

Slot Lock 1.0.0release

MC 1.21.11fabric

March 14, 2026

How to Install Slot Lock on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.1).

Install Mod

Open the mod browser in the dashboard and search for "Slot Lock". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

26.1, 1.21.11

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Slot Lock server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1). You can switch loaders with one click in the panel.

Is Slot Lock compatible with fabric?

Slot Lock officially supports fabric for Minecraft 26.1, 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Slot Lock – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Slot Lock consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.