LY's Mapmakers Toolkit
by Lifeely
LY's Mapmakers Toolkit is a Fabric utility that lets players create, preview and manage command-style areas in the world without placing blocks.
What it does
Selecting an area starts with a Toolkit Area Select wand: a left click on a block sets the first corner and a right click sets the second. Once two points are chosen, the mod generates a 3D preview box with optional outlines, a fill, corner and origin markers, and a floating name label that always faces the player. Pressing K opens the editor for the area under the player, and pressing J toggles previews off, with a small HUD indicator showing the current state.
Areas can be saved to a local library stored in a per-player config file, then renamed, copied, deleted or teleported to later, so previously saved areas do not have to be recreated. Border colors blink when an entity enters an area, which helps with checking coordinates and detecting players inside a region. The mod is client-side only, so the world stays vanilla-compatible, and players without it see the overlays only if they have the mod installed themselves.
The mod is released under the MIT License and is not open source. Its files target 1.20.1 – 1.21.11 for Fabric, and the latest file, 0.1.0+mc1.21, covers 1.21.11 and was published on 2026-03-06.
Key features
Area selection wand
A wand selects two corners in the world and turns them into a preview area without manual coordinate entry.
Live 3D previews
Areas appear as preview boxes with outlines, optional fill, corner markers and an origin marker.
Local area library
Several areas can be saved, renamed, copied, deleted or teleported to, with the data kept in a per-player config file.
Entity detection
Border colors blink when an entity enters an area, making it easier to check who is inside a region.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
1.20.x6 of 6 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Map makers, adventure creators and command writers who work with coordinate-based regions in Minecraft.
How it compares
CB Toolkit is a Fabric client-side mod for 1.21.4 – 1.21.11 under All rights reserved, and is not open source. Area Selector V1 is a Fabric client-side mod for 1.21.11 under All rights reserved, and is not open source. Basically Util Commands is a Fabric and Quilt server-side mod for 1.20 – 26.3 under the MIT License, and is open source, so it does not add client-side previews.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| LY's Mapmakers Toolkit | Fabric | 1.20.1 – 1.21.11 | Client-side only | 2026-03-06 |
| CB Toolkit | Fabric | 1.21.4 – 1.21.11 | Client-side only | 2026-09-14 |
| Area Selector V1 | Fabric | 1.21.11 | Client-side only | 2026-04-28 |
| Basically Util Commands | Fabric and Quilt | 1.20 – 26.3 | Server-side only | 2026-10-13 |
Questions
Does LY's Mapmakers Toolkit need to be installed on the server?
Which loader does LY's Mapmakers Toolkit support?
Are the areas saved in the world or on the player's computer?
In the catalog
LY's Mapmakers Toolkit is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
Mapmaker Toolkit is a client-side utility mod for Minecraft mapmakers and command creators. It helps you create, visualize, edit, and manage command-style areas directly in the world without placing blocks or constantly checking coordinates. Have you ever had problems setting up coordinates for detecting players…
Official listing
- Modrinth page
- modrinth.com/mod/lys-mapmakers-toolkit
- Owner
- Lifeely
- Published
- 2026-03-06
- Updated on Modrinth
- 2026-03-06
- Facts verified
- 2026-10-15