Mousie Builder Toolkit

Mousie Builder Toolkit

Mousie Builder Toolkit adds a set of powerful yet easy-to-use tools that make building easier and give you the freedom to create without the usual limitations.

by
1 Downloads
fabricgame-mechanicsutility
Rent Server with this Mod

Screenshots

in-game menu

About this Mod

Mousie Builder Toolkit is a Fabric mod designed for builders who enjoy precise, flexible, and slightly impossible construction.

Hold Left Alt (default keybind: Open Toolkit) to open Mousie’s menu, then hover over each button for a short description. The mod introduces tools that extend vanilla Minecraft building rules, allowing block placement and editing beyond normal limitations.

The mod works in both single-player and multiplayer. On servers, it must be installed on both client and server, and players require operator permissions to access the full toolkit. Without OP, the menu can still be opened, but tools remain locked.

Current Tools Mouse tools

  • Still Paws – Prevents block updates, physics, fluid ticks, growth ticks, and scheduled block reactions.
  • Cheese Logic – Allows block placement without normal support or placement restrictions.
  • Extend Tail – Extends block interaction range with selectable distances.
  • Ruffled Fur – Adjusts flight speed in Creative and Spectator modes.
  • Moon Sight – Toggles Night Vision and detects existing effects from potions or commands.
  • Gamemode Buttons – Quickly switch between Survival, Creative, Spectator, and Adventure.
Spoiler

More tools and buttons will be added in future updates. Mousie is still conducting experiments that may or may not be safe for block physics.

⚙ Controls:
The menu key can be changed in Minecraft controls:
Options → Controls → Key Binds → Mousie Builder Toolkit → Open Toolkit.
If Mod Menu is installed, keybinds can also be configured through the mod’s settings screen.

License Mousie reading the description

This mod is provided for free. It may be used in single-player and multiplayer servers, including modpacks, as long as it is not sold or redistributed as a standalone file.

📬 Feedback

Found a bug or have an idea for a new tool? I'd love to hear your feedback! Please send bug reports and feature suggestions to [email protected]

Available Versions

Mousie Builder Toolkit 0.1.1beta
MC 1.21.11fabric
July 1, 2026

How to Install Mousie Builder Toolkit on Your Server

1

Order Server

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

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

3

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Mousie Builder Toolkit 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 (1.21.11). You can switch loaders with one click in the panel.

Is Mousie Builder Toolkit compatible with fabric?

Mousie Builder Toolkit officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Mousie Builder Toolkit – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Mousie Builder Toolkit 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.

Rent Modded Server

Install Mousie Builder Toolkit with just one click on your server.

Recommended RAM
4 GBfrom €8/mo
Minimum 3 GB | per 8 players
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
LicenseRef-All-Rights-Reserved
Server-side
Required

Supported Versions

1.21.11