Iron Golem Spawn Checker
by MossShade
Iron Golem Spawn Checker is a Fabric client-side overlay that marks the area where Iron Golems can spawn around the player.
What it does
The overlay draws the 17×13×17 box centered on the player, which is the area the game itself checks for Iron Golem spawns. Players building iron farms or villager farms can see exactly where spawns are checked, so they can place spawning platforms and walls with the box in view.
Calculation can be tuned in the settings. An option turns mob hitbox collision on or off during the calculation, and another changes the calculation area. Fabric API is required, and Mod Menu is optional, adding a settings screen when present. The mod is licensed under the GNU Affero General Public License v3.0 only and is open source, with public source code and an issue tracker. Files target 1.21.4 – 1.21.5, and the latest build is 2.0.0 for 1.21.5, released 2025-04-21.
Key features
Spawn area overlay
Shows the area where Iron Golems spawn villagers, drawn around the player as a box.
Game-accurate box
Uses the game's own check for Iron Golem spawns, so the 17×13×17 box matches real spawn conditions.
Hitbox collision option
A setting turns mob hitbox collision on or off during the calculation.
Adjustable calculation area
An option lets players change the area used for the calculation.
Mod Menu support
When Mod Menu is installed, the settings are reachable from its configuration screen.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Optional 1
Use cases
Iron farm layout
Builders place the platform and walls of an iron farm while watching the spawn box.
Villager farm planning
Players check whether a villager farm sits inside the spawn area before building around it.
Who it’s for: Players building iron farms or villager farms in single-player or on a server where the client mod is installed.
How it compares
Area Assistor is also client-side only and open source under the MIT License, for 1.19.4 – 1.21.5, so it covers the same versions. Modpack Update Checker is a different kind of tool, for Fabric, Forge, NeoForge and Quilt across 1.16.5 – 1.21.6, with a client or server environment and a Creative Commons non-commercial license that is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Iron Golem Spawn Checker | Fabric | 1.21.4 – 1.21.5 | Client-side only | 2025-04-21 |
| Area Assistor | Fabric | 1.19.4 – 1.21.5 | Client-side only | 2025-04-30 |
| Modpack Update Checker | Fabric, Forge, NeoForge and Quilt | 1.16.5 – 1.21.6 | Client or server, optional | 2025-06-22 |
Questions
Does Iron Golem Spawn Checker need Fabric API?
Does the server need the mod?
Is the Mod Menu integration required?
In the catalog
Iron Golem Spawn Checker is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 15,307 mods support Minecraft 1.21.5.
More from MossShade
Similar mods
What the author says
A client-side Minecraft Fabric mod to show an overlay where Iron Golems can spawn. This is helpful when building iron farms or villager farms in order to see exactly where the game checks for Iron Golem spawns. Uses the in-game code to check if Iron Golems can spawn in a 17×13×17 box centered around the player.
Official listing
- Modrinth page
- modrinth.com/mod/iron-golem-spawn-checker
- Owner
- MossShade
- Published
- 2025-02-08
- Updated on Modrinth
- 2025-04-21
- Facts verified
- 2026-10-15