Arbitrary Effect Killer
by bluffcon
Arbitrary Effect Killer is a Fabric server mod that stops the server from sending status-effect packets the client does not need to know about.
What it does
The mod cancels the packets that tell a client which status effects are active on a player. Because the client never receives them, effects such as infinite saturation, resistance or regeneration stay hidden from players on the server. It is meant for creative servers that run in survival mode and do not want players to see those effects.
The mod is server-side only, so only the server needs it and players join without installing anything. It is released under the MIT License, and it is not open source. Files are published for 1.21.10 and 1.21.11 as version 1.0.0 for 1.21.11.
Key features
Hidden effect packets
Status effect packets are cancelled before they reach the client, so players do not receive the effect list.
Cosmetic effect control
Effects that would look untidy on screen, such as infinite saturation, are kept out of the player's view.
Server-only operation
Players connect without the mod, because only the server side runs the packet changes.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does a player need Arbitrary Effect Killer to join the server?
Which versions does Arbitrary Effect Killer support?
In the catalog
Arbitrary Effect Killer is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 19,862 mods support Minecraft 1.21.11.
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What the author says
cancels sending effect packets to the client, so the client doesnt know what effects they currently have. works perfectly for creative servers that still use survival mode and dont want people to see the ugly infinite saturation, resistance, regeneration, etc. use this mod if you know what youre doing and youre sure…
Official listing
- Modrinth page
- modrinth.com/mod/arbitrary-effect-killer
- Owner
- bluffcon
- Published
- 2026-03-21
- Updated on Modrinth
- 2026-03-21
- Facts verified
- 2026-10-15