Effects, Enchantments & Item Data

Effects and potions

No poison, from anything

Covers potions, cave spiders, /effect, and every other source:

{
  "action": "remove_effect",
  "effects": ["minecraft:poison"]
}

Poison becomes slowness

Same duration and level. Potion tooltips show Slowness too:

{
  "action": "remove_effect",
  "effects": ["minecraft:poison"],
  "replace_with": "minecraft:slowness"
}

Hide night vision potions

Removes drinkable, splash and lingering Night Vision potions, plus tipped arrows, from creative tabs, recipe viewers and loot. The effect itself still works (e.g. from commands):

{
  "action": "remove_potion",
  "effects": ["minecraft:night_vision"]
}

Enchantments

No Mending or curses anywhere

{
  "action": "remove_enchantment",
  "enchantments": ["minecraft:mending", "#minecraft:curse"]
}

Fortune only on golden pickaxes

{
  "action": "remove_enchantment",
  "enchantments": ["minecraft:fortune"],
  "not": {
    "items": ["minecraft:golden_pickaxe"]
  }
}

No Sharpness gear in loot

Removes any loot item that comes enchanted with Sharpness:

{
  "action": "remove_loot",
  "enchantments": ["minecraft:sharpness"]
}

Item data

See Item data for the full syntax.

Remove Mending books only

Other enchanted books are left alone.

1.21+:

{
  "action": "remove",
  "items": ["minecraft:enchanted_book"],
  "components": ["[stored_enchantments~[{enchantments:\"minecraft:mending\"}]]"]
}

1.20.1:

{
  "action": "remove",
  "items": ["minecraft:enchanted_book"],
  "nbt": ["{StoredEnchantments:[{id:\"minecraft:mending\"}]}"]
}

Remove items your datapack marked as banned (1.21+)

Any item given with /give @s stick[custom_data={my_pack:{banned:true}}] gets removed:

{
  "action": "remove",
  "components": ["[custom_data~{my_pack:{banned:true}}]"]
}

Remove items by custom model data (1.20.1)

{
  "action": "remove",
  "nbt": ["{CustomModelData:1}", "{CustomModelData:2}"]
}