AntiUtils
by Hobbylos
AntiUtils, a Fabric client mod for Minecraft 1.21.11, shows players and animals that are hidden by invisibility and adds an in-game settings screen.
What it does
On a Fabric client, the mod reveals invisible players and invisible animals, so they can be seen on screen. An optional blue tint marks entities that are revealed this way, which lets a player tell them apart from normal ones. Its features are aimed at small survival multiplayer servers, where invisibility is often used to hide from others.
Menu commands such as invsee and ecsee gain player-name autocomplete, which helps when typing long names. An in-game toggle screen controls the features, and the right Shift key opens the AntiUtils screen. The mod depends on Fabric API, which must be installed next to it.
AntiUtils is client-side only, so only the client needs it and servers run without it. Its source code and issue tracker are public. The code is not open source: the mod is released under All rights reserved. Files exist for 1.21.4, 1.21.8 and 1.21.11, with 1.0.0 for 1.21.11 as the latest Fabric file.
Key features
Reveal invisible players
Players under the invisibility effect are drawn on screen, so they can be seen while moving.
Reveal invisible animals
Animals affected by invisibility are shown as well, not only player characters.
Optional blue tint
Revealed entities can be given a blue tint, making them stand out from other entities on screen.
Player-name autocomplete
The invsee and ecsee commands complete player names as they are typed.
In-game toggle screen
A settings screen switches each feature on or off without editing files, and the right Shift key opens it.
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
Use cases
Spotting hidden players
Players on a survival server can keep track of others who have drunk invisibility potions.
Who it’s for: Players on Fabric who play on survival multiplayer servers and want to see invisible players and animals. The mod is only useful on the client side of a Fabric setup.
How it compares
AutoComplete is client-side only, released under the MIT License and published for Fabric 1.21 – 26.3, so it covers the name completion feature alone. Invisible Blocks is also client-side only and MIT licensed, but targets only 1.21.11 and handles invisible blocks rather than entities. Visible Invisible is open source under the MIT License and also covers 1.21.11 only, so it suits those who want the source available.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| AntiUtils | Fabric | 1.21.4 – 1.21.11 | Client-side only | 2026-05-20 |
| AutoComplete | Fabric | 1.21 – 26.3 | Client-side only | 2026-10-01 |
| Invisible Blocks | Fabric | 1.21.11 | Client-side only | 2026-07-07 |
| Visible Invisible | Fabric | 1.21.11 | Client-side only | 2026-03-31 |
Questions
Does AntiUtils need Fabric API?
Does the server need AntiUtils?
Which game versions have AntiUtils files?
Can AntiUtils be used on other loaders?
In the catalog
AntiUtils is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
AntiUtils Client-side Fabric utility mod for Minecraft 1.21.11. Features - Reveal invisible players - Reveal invisible animals - Optional blue tint for revealed invisible entities - Player-name autocomplete for /invsee and /ecsee - In-game toggle GUI - Right Shift or /antiutils opens the AntiUtils GUI
Official listing
- Modrinth page
- modrinth.com/mod/antiutils
- Owner
- Hobbylos
- Published
- 2026-05-14
- Updated on Modrinth
- 2026-05-20
- Facts verified
- 2026-10-15