
USeArKey - Keybinding
Bind any command to any key or mouse button. Simple and lightweight macro control for Minecraft. Keybinder
Screenshots

About this Mod
USeArKey — Keybinding
Bind any command to any key or mouse button.
USeArKey is a lightweight Minecraft mod that makes hotkey customization simple. Create Keybinds, assign them to keys, and streamline your gameplay with fast access to commands.
Features
- Flexible keybinding: assign chat commands or actions to any key or mouse button.
- History support: recently used commands are saved for quick reuse.
- Mouse binds: supports side buttons for extra control.
- Parallax background: adds a subtle visual effect to the macro screen.
How to use
- Go to Options → Controls and set a key for Open Keybinder Screen (default:
K). - Open the Keybinder Screen, type a command, press Assign Key, and choose a button.
- Save and use your new hotkey directly in‑game.
Installation
- Download the latest version from Modrinth.
- Place the
.jarfile into yourmodsfolder. - Launch Minecraft with Fabric or Quilt.
Why you’ll like it
USeArKey keeps things simple: no bloated features, just reliable keybinding. Perfect for players who want quick access to commands without typing them every time.
Available Versions
How to Install USeArKey - Keybinding 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 (1.21.8).
Install Mod
Open the mod browser in the dashboard and search for "USeArKey - Keybinding". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.8
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
USeArKey - Keybinding 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 (1.21.8). You can switch loaders with one click in the panel.
Is USeArKey - Keybinding compatible with fabric?
USeArKey - Keybinding officially supports fabric for Minecraft 1.21.8. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with USeArKey - Keybinding – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if USeArKey - Keybinding 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.
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Rent Modded Server
Install USeArKey - Keybinding with just one click on your server.