Mob Filter Mod Wiki › FAQ
Mob Filter Mod FAQ
10 questions players actually ask, answered.
How do I get started with Mob Filter Mod after installing it?
Launch the game once so the mod generates its config file (mobfilter.yml or mobfilter.json5) in your config folder, then open it to add your first rule. Rules take effect on world load or after running the reload command.
Where is the Mob Filter config file and what format does it use?
It lives in your Minecraft config directory and can be written as either mobfilter.yml or mobfilter.json5. Pick one format and keep all your rules in that single file.
How do I write a rule that stops one mob from spawning?
Add a rule that names the mob and sets its action to deny, optionally scoped to a biome, dimension, or coordinate range. Without extra conditions, the deny applies everywhere that mob could spawn.
What's the difference between the config file rules and the /mobfilter command?
The config file holds persistent, condition-based rules that load with the world, while the /mobfilter command lets you quickly deny or allow a mob on the fly. Use the command for quick tests and the config for permanent setups.
Can I combine multiple conditions in one rule, like biome plus time of day?
Yes, a single rule can stack conditions such as mob type, biome or dimension, coordinates, time of day, light level, and moon phase. The rule only applies when all its conditions match.
Why isn't my rule working after I edited the config?
Most often the config wasn't reloaded, the mob ID is misspelled, or the conditions are too narrow to match where the mob actually spawns. Run the reload command or restart the world, then double-check the mob identifier and each condition.
How do I stop creepers from spawning around my base without banning them everywhere?
Write a deny rule for creepers scoped to a coordinate range or radius covering your base area. Creepers will still spawn normally outside that zone.
How do I make a safe zone where no hostile mobs spawn?
Create a rule that denies the hostile mobs you care about within a coordinate range, or deny them by light level so lit areas stay safe. Combine both if you want the zone protected regardless of lighting.
Can I stop squids in rivers but keep them in oceans?
Yes, add a deny rule for squids with the river biome as a condition, and leave oceans untouched. Since the rule is biome-scoped, ocean spawning is unaffected.
Does Mob Filter Mod affect performance or work with other mob mods?
It only filters spawn attempts, so the performance impact is minimal even with many rules. It generally works alongside other mob and spawn mods, but if two mods control the same spawn you may need to disable one rule to avoid conflicts.