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Minecraft Functions

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Diogo B.Beloni edited this page Sep 24, 2026 · 1 revision

Minecraft Functions

Functions for creating recipes and modifying data using Minecraft's native recipe systems through KubeJS.

Smelting

Creates a Minecraft smelting recipe.

  • Machine: furnace.

  • Output: a single item.

  • Input: a single ingredient.

  • Experience: amount of experience granted when the recipe is completed.

  • Time: cooking time defined in ticks.

  • Typical use: raw iron → iron ingot.

  • Code:

smelting(
    e,
    itemOutput("minecraft:iron_ingot"),
    itemInput("minecraft:raw_iron"),
    0.7,
    200
);

Blasting

Creates a Minecraft blasting recipe.

  • Machine: blast furnace.

  • Output: a single item.

  • Input: a single ingredient.

  • Experience: amount of experience granted when the recipe is completed.

  • Time: cooking time defined in ticks.

  • Typical use: raw iron → iron ingot.

  • Code:

blasting(
    e,
    itemOutput("minecraft:iron_ingot"),
    itemInput("minecraft:raw_iron"),
    0.7,
    100
);

Smoking

Creates a Minecraft smoking recipe.

  • Machine: smoker.

  • Output: a single item.

  • Input: a single ingredient.

  • Experience: amount of experience granted when the recipe is completed.

  • Time: cooking time defined in ticks.

  • Typical use: beef → cooked beef.

  • Code:

smoking(
    e,
    itemOutput("minecraft:cooked_beef"),
    itemInput("minecraft:beef"),
    0.35,
    100
);

Shaped Crafting

Creates a Minecraft shaped crafting recipe.

  • Machine: crafting table.

  • Output: a single item or stack.

  • Inputs: ingredients assigned to pattern keys.

  • Pattern: grid of strings representing the crafting pattern.

  • Typical use: recipes where the position of the ingredients matters.

  • Code:

shaped(
    e,
    itemOutput("minecraft:iron_pickaxe"),
    Object.assign(
        {},
        itemInputKey("A", "minecraft:iron_ingot"),
        itemInputTagKey("B", "c:rods/wooden")
    ),
    [
        "AAA",
        " B ",
        " B "
    ]
);

Shapeless Crafting

Creates a Minecraft shapeless crafting recipe.

  • Machine: crafting table.

  • Output: a single item or stack.

  • Inputs: multiple ingredients.

  • Order: the position of the ingredients does not matter.

  • Typical use: recipes where ingredients can be placed in any position.

  • Code:

shapeless(
    e,
    itemOutput("minecraft:stick"),
    [
        itemInput("minecraft:planks"),
        itemInput("minecraft:planks")
    ]
);

Stonecutting

Creates a Minecraft stonecutting recipe.

  • Machine: stonecutter.

  • Output: a single item.

  • Input: a single ingredient.

  • Typical use: stone → stone slab.

  • Code:

stonecutting(
    e,
    itemInput("minecraft:stone"),
    itemOutput("minecraft:stone_slab")
);

Smithing

Creates a Minecraft smithing transformation recipe.

  • Machine: smithing table.

  • Output: a single item.

  • Template: smithing template ingredient.

  • Base: item being upgraded or transformed.

  • Addition: additional ingredient used in the transformation.

  • Typical use: diamond sword + netherite upgrade + netherite ingot → netherite sword.

  • Code:

smithing(
    e,
    itemOutput("minecraft:netherite_sword"),
    itemInput("minecraft:netherite_upgrade_smithing_template"),
    itemInput("minecraft:diamond_sword"),
    itemInput("minecraft:netherite_ingot")
);

Add Tag

Adds items to a Minecraft item tag.

  • Type: item tag modification.

  • Tag: identifier of the item tag to modify.

  • Items: list of item identifiers to add to the tag.

  • Typical use: adding custom or modded items to existing item tags.

  • Code:

addTag(
    e,
    "c:ingots/iron",
    [
        "minecraft:iron_ingot",
        "examplemod:iron_ingot"
    ]
);

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