Geodesy
by Kosmolot
Geodesy is a Fabric utility that plans amethyst farm layouts for a given geode, run from a command block or a player command on a test or disposable world.
What it does
The mod calculates the layout of a flying-machine amethyst farm around one geode. A player marks two corners of the area, and the mod highlights the detected geode so the coordinates can be checked before any machine is built. Small and medium geodes suit it well, since large ones produce many collisions in the farm design.
The farm design tool uses marker blocks to describe the build: a pumpkin marks where amethyst clusters are pushed and destroyed, crying obsidian marks budding amethyst, and moss outlines the outer frame. The mod can restrict the layout to one or two directions and changes its shape according to the order in which directions are given. It also runs an analysis that tries combinations of projections and axes to compare their efficiency. Geodesy is open source under the MIT License and is server-side only, so players join without installing it, though it requires Fabric API and the server must allow command blocks.
Key features
Geode area calculation
Two corner coordinates define the area, which is cleared of surrounding junk before the geode is measured.
Farm design markers
Blocks such as pumpkins, crying obsidian and moss tell the tool where clusters, budding amethyst and the outer frame belong.
Direction control
Directions can be limited to one or two instead of the usual three, and their order changes the resulting formation.
Efficiency analysis
Combinations of projections and axes are tested to calculate the efficiency of each candidate layout.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x12 of 12 versions with builds
1.20.x5 of 5 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
1.17.x2 of 2 versions 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 1
Use cases
Who it’s for: Players building flying-machine amethyst farms in survival or creative worlds, and server operators who want to test farm layouts before committing resources.
How it compares
Direction HUD is a Fabric client mod for 1.21.8 – 26.3 that a player needs on the client, with the server optional, and it is released under All rights reserved. Barricade is open source under the Mozilla Public License 2.0 and is a client-required mod for Fabric and NeoForge across 1.21.1 – 26.1.2. Amethyst Cutting runs on the server, with the client optional, and is licensed under the GNU General Public License v3.0 only for 1.17 – 26.2.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Geodesy | Fabric | 1.17 – 26.3 | Server-side only | 2026-06-24 |
| Direction HUD | Fabric | 1.21.8 – 26.3 | Client required, server optional | 2026-10-09 |
| Barricade | Fabric and NeoForge | 1.21.1 – 26.1.2 | Client required, server optional | 2026-05-11 |
| Amethyst Cutting | Fabric, Forge, NeoForge and Quilt | 1.17 – 26.2 | Server required, client optional | 2026-05-30 |
Questions
Does Geodesy need Fabric API?
Which versions does Geodesy support?
Does a player need the mod to join a server that runs it?
In the catalog
Geodesy 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 Kosmolot
Similar mods
What the author says
Small Fabric mod for calculating amethyst farm flying machine layout. Inspired by the original ilmango's video and the flying machine based farm made by neffty87. You should only run this in disposable worlds, either in single player or on servers where you have op. Command blocks must also be enabled.
Official listing
- Modrinth page
- modrinth.com/mod/geodesy
- Owner
- Kosmolot
- Published
- 2023-04-16
- Updated on Modrinth
- 2026-06-24
- Facts verified
- 2026-10-15