BredExempt

Your breeding and egg farms are quietly starving your natural spawns. BredExempt stops that.

In vanilla Minecraft, every animal you breed — and every chick you hatch from a thrown egg — counts toward the passive mob cap. Pack a pen with cows, sheep, pigs, or chickens and you push the loaded area toward its cap: fewer animals spawn in the wild around you, and your farm slowly chokes natural spawning.

What it does

• When two animals breed, it marks the newborn and both parents as persistent.
• When a chick hatches from a thrown egg, it marks the chick as persistent too.

Persistent mobs are skipped by the natural-spawn cap count — so your breeding and egg farms stop consuming the passive-creature cap, leaving that room for naturally spawning wildlife.

Commands & config

• /bredexempt inspect — look at an animal: marked or not, why, and whether it still counts toward the cap. Click the output to copy it.
• /bredexempt cap — live cap accounting for your dimension: counted vs cap, exempt vs wild.
• Optional config/bredexempt.properties — toggles for offspring / parents / egg-hatched chicks, plus an entity allowlist/denylist. Zero config needed by default.
• Modpacks can use the #bredexempt:allowed / #bredexempt:denied entity tags instead — a plain datapack, no config edits.

Modded animals

Modded animals are marked exactly like vanilla ones when their mod uses Minecraft's standard Animal breeding flow — many vanilla-style farm/wildlife mods do. Modded wildlife gains spawn room when it spawns through the vanilla natural-spawning system in the standard creature category.

Mods with custom breeding systems, custom spawners, custom mob caps, or custom egg/hatching mechanics may not be covered — if you find one, open an issue and dedicated support can be looked at.

Server support

Relies on vanilla's persistent-mob cap exemption.

Quilt runs the Fabric jar, but needs Quilt Loader 0.30.0 or newer. Quilt may offer an older loader for 1.21.11; that one fails to start with a missing-fabricloader error.