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DebugUtils

Enables various debugging features of minecraft

FabricNeoForgeForge
Loaders
FabricNeoForgeForge
Downloads on Modrinth
21.9K
Followers on Modrinth
21
versions
49
Updated
August 21, 2026Aug 21
Published
in 2023

At a glance

Runs on Fabric, NeoForge and Forge
For Minecraft 1.21.11, 26.1.2–26.3 …
Needed in the game and on the server
Latest version — 26.2-1.0.9-fabric from August 21, 2026
Requires Fabric API
License LGPL-3.0-only — free
Where it's needed
In gamerequiredOn serverrequired

Needed both in the game and on the server

Game versions1.21.8–1.21.9, 1.21.11, 26.1.2–26.3 …

forge neoforge fabric

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🔎 Debug Utils

Mojang has various debugging tools implemented in minecraft that are removed for the release jar. This mod adds them back which might be useful for various cases. You will need this mod on both the client and the server.

Debugging features include for example:

Entity Pathing: Showing a mobs pathfinding

Entity Brains: Showing the brain states of mobs

Entity Goals: Showing a mobs goal tasks

> 1.21.9

As of 1.21.9 the debugging features are no longer stripped for the release jar and can be accessed by the user. The process to do so though involves the use of jvm arguments meaning you cannot change it in game. To accomodate that now this mod allows you to toggle the features in game without restarting it.

How to use

Use the command `/debugutils ` to turn a debugging feature on/off.

To turn all currently active features off use /debugutils off.

If you are on 1.21.9 the command has now been split between debugutils and debugutils_client.
debugutils_client toggles all features that do not require data from the server.

FAQ

How to install DebugUtils?

Install Fabric for your Minecraft version, download DebugUtils for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does DebugUtils support?

DebugUtils has builds for Minecraft 1.21.4–1.21.5, 1.21.8–1.21.9, 1.21.11, 26.1.2–26.3 ….

Is DebugUtils needed on the server?

Needed in the game and on the server

License and source
GNU Lesser General Public License v3.0 onlyfree to use and share; changes to the mod itself must be published under the same license
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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