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Minecraft Mob Builder — Custom /summon with Attributes & Gear

Build a custom Minecraft mob visually: set health, movement speed, attack damage, armor, hand items, helmet, and behavior flags, then copy the full /summon NBT command.

Entity data: Java Edition 26.2 · 157 entities

Build Your Custom Mob

Generated command /summon minecraft:zombie ~ ~ ~

How the Mob Builder Works

Only the fields you set end up in the NBT — leave anything blank and the mob spawns with vanilla defaults. Health, movement speed, attack damage, and armor go into Attributes with the matching Health value; equipment goes into HandItems and ArmorItems; the checkboxes add their behavior tags.

Example

/summon minecraft:zombie ~ ~ ~ {CustomName:'"Boss Bob"',Health:100,Attributes:[{Name:"minecraft:generic.max_health",Base:100},{Name:"minecraft:generic.attack_damage",Base:8}],HandItems:[{id:"minecraft:diamond_sword",Count:1},{}],PersistenceRequired:1b}

A 100-HP named zombie boss holding a diamond sword that never despawns.

Minecraft Mob Builder — Custom /summon with Attributes & Gear FAQ

Why does my mob have default stats?

Attributes only apply when you fill the field. Health must be set both as the Health tag and the max_health attribute — this tool writes both automatically when you enter a value.

Can I give the mob enchanted gear?

Not in this version. Give it a plain item here, or use the Enchanted Gear Generator to hand a finished item to a player instead.

How do I stop the mob from despawning?

Enable PersistenceRequired, or give it a custom name — either one keeps it in the world forever.

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