
Modrinth · Minecraft mod
Mob Spawn Indicator
Highlights block surfaces where hostile mobs can spawn using color-coded overlays
Quick answer
Which Mob Spawn Indicator release matches 26.1?
Mob Spawn Indicator 1.0.1+26.1-fabric targets 26.1 with Fabric. It must be installed on the client. Do not install it on the dedicated server. All 1 required mods have matching files.
Where it goes
Is Mob Spawn Indicator required on the client, server, or both?
It must be installed on the client. Do not install it on the dedicated server.
This file is marked client-only.
What else does Mob Spawn Indicator 1.0.1+26.1-fabric need?
1.0.1+26.1-fabric on 26.1. Every mod below is checked against that same setup.
Install Fabric API first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Mob Spawn Indicator without breaking your instance.
Built for Mob Spawn Indicator 1.0.1+26.1-fabric on 26.1. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.0.1+26.1-fabric. It targets 26.1 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Fabric API first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
It must be installed on the client. Do not install it on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.0.1+26.1-fabric. It opens that exact file at the source.
About this project
What does Mob Spawn Indicator add?
Mob Spawn Indicator highlights valid mob spawn floors in your vicinity with color-coded overlays. It uses vanilla spawn rules, so it works on any server without needing to be installed server-side.
Available for NeoForge (Minecraft 1.21 - 1.21.11, 26.1) and Fabric (Minecraft 1.21 - 1.21.11, 26.1).
Features
- Color-coded overlays on valid spawn floors: red (danger), yellow (warn), green (safe)
- Configurable render distance, opacity, and which colors to display
- Settings GUI accessible from the mods screen (or Mod Menu on Fabric) and via commands
- Client-side only - works on vanilla servers, SMPs, and modded servers
Commands
/msi settings- open the settings GUI/msi toggle- toggle the overlay on/off/msi on//msi off- enable or disable the overlay/msi reset- reset all settings to defaults
Configuration
Default keybind: J (toggle overlay)
Config file: config/msi-common.toml (same on both loaders)
| Option | Default | Description |
|---|---|---|
renderRadius |
16 | Render distance in blocks (4–64) |
overlayOpacity |
0.5 | Overlay transparency (0.05–1.0) |
showDanger |
true | Show red overlay (valid spawn, no space for mobs) |
showWarning |
true | Show yellow overlay (valid spawn, 1 block space) |
showSafe |
false | Show green overlay (valid spawn, 2+ block space) |
Notes
- Uses vanilla Minecraft spawn rules: slabs, stairs, trapdoors, glass, and leaves are correctly excluded as non-spawnable
- Overlays update every 5 ticks
- Works in singleplayer, LAN, and multiplayer
Project description from Modrinth.
Pick your setup
Mob Spawn Indicator by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1
2 loader builds1.21.11
2 loader builds1.21.10
2 loader builds1.21.9
2 loader builds1.21.8
2 loader builds1.21.7
2 loader builds1.21.6
2 loader builds1.21.5
2 loader builds1.21.4
2 loader builds1.21.3
2 loader builds1.21.2
2 loader builds1.21.1
2 loader buildsShowing the newest 12 of 13 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Mob Spawn Indicator versions and loaders
1.0.1+26.1-fabric
msi-1.0.1+26.1-fabric.jar
14 Nov 2026
1.0.1+26.1-neoforge
msi-1.0.1+26.1-neoforge.jar
14 Nov 2026
Looking for an older file? The official Modrinth project page is in Resources.