MobsFilter
by Gabrieli2806
MobsFilter lets a server owner block specific vanilla and modded entity types from spawning at all, for a Fabric server running 1.21.11.
What it does
A server operator lists the entity types that should never appear, using vanilla identifiers such as minecraft:creeper or entries from other mods such as anothermod:some_entity. When a spawn is attempted, the mod looks each entity up in that list and discards blacklisted ones before they enter the world. Matching is a fast table lookup, so the check adds little work during spawning.
Once an entity is on the blacklist, it is discarded right away, and the cleanup happens safely during the following server tick, so no stray copies remain in the world. The mod is aimed at server owners who want to control which mobs their world uses, for example to strip out creatures from a modpack or from a disliked vanilla type.
MobsFilter is server-side only: players join without installing it, and only the server needs the mod. It requires Fabric API, is published for Fabric alone, and the code is open source under the MIT License, with the single game version 1.21.11.
Key features
Entity blacklisting
Any entity type can be added to a blacklist, so that it cannot spawn anywhere on the server.
Vanilla and modded identifiers
Blacklist entries work with standard vanilla names as well as entity types added by other mods.
Fast spawn check
Each spawn attempt is matched against a lookup table, so blocked entities are caught without a slow search.
Safe cleanup
Blacklisted entities are discarded at once and removed on the next server tick, leaving no stray copies behind.
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
Modpack server control
A server owner running a large modpack can remove entity types that do not fit the pack's design.
Trimming vanilla mobs
Operators who want a world without a particular vanilla mob can keep it from spawning with a single list entry.
Who it’s for: Server owners and administrators who manage which mobs spawn on their Fabric server. Players need nothing installed, since the mod runs only on the server.
How it compares
MobsBeGone is a Fabric server-side mod for 1.21.1, open source under the MIT License. Nocreepers is a Fabric server-side mod for 1.21.11 under All rights reserved, so its code is not open source. Mob Blacklist is also a Fabric server-side mod under the MIT License, open source, with files covering 1.21.1 – 26.1.2, a wider range than MobsFilter's single version.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| MobsFilter | Fabric | 1.21.11 | Server-side only | 2026-03-21 |
| MobsBeGone | Fabric | 1.21.1 | Server-side only | 2026-08-03 |
| Nocreepers | Fabric | 1.21.11 | Server-side only | 2026-04-24 |
| Mob Blacklist | Fabric | 1.21.1 – 26.1.2 | Server-side only | 2026-06-02 |
Questions
Does MobsFilter need Fabric API?
Does a player need MobsFilter installed?
Which game version does MobsFilter support?
In the catalog
MobsFilter is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from Gabrieli2806
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What the author says
Entity Blacklisting Total Control - Blacklist specific vanilla or modded entities from spawning entirely. Fast & Safe Cleanup - Entities are checked against a fast lookup table during spawn. Blacklisted entities are discarded immediately and cleaned up safely on the next server tick. * Wide Compatibility - Works with…
Official listing
- Modrinth page
- modrinth.com/mod/mobsfilter
- Owner
- Gabrieli2806
- Published
- 2026-03-21
- Updated on Modrinth
- 2026-03-21
- Facts verified
- 2026-10-15