Result Processors

Result processors are a feature that allows adding additional effects to recipe results during crafting. With result processors, you can copy, add, or remove item components.

Supported Recipe Types

Recipe Type	type Value	Support Status
Anvil Recipe	anvil	✅ Supported
Smithing Transform	vanilla_smithing_transform	✅ Supported
Smelting	vanilla_smelting_*	✅ Supported
Brewing	vanilla_brewing	✅ Supported
Shaped Recipe	vanilla_shaped	✅ Supported
Shapeless Recipe	vanilla_shapeless	✅ Supported
Stonecutting	vanilla_stonecutting	✅ Supported (Paper and its forks only)

Basic Syntax

type: <recipe_type>
result: '<item_id>'
# ... other recipe fields

result_processors:
  <component_name>:
    type: <processing_strategy>
    data:  # optional, depends on strategy
      <configuration>

List Format

The same component supports list format, executing multiple processing actions in order:

result_processors:
  enchantments:
    - type: copy_from_source
    - type: remove
      data:
        value:
          - "minecraft:sharpness"
    - type: add
      data:
        minecraft:unbreaking: 3

Source Item Meaning

The meaning of the source item varies by recipe type:

Recipe Type	Source Item
Anvil/Smithing	base item (left slot)
Smelting/Stonecutting/Brewing	input item
Crafting table	null (no source item)

Processing Strategies

Result processors support four processing strategies:

copy_from_source

Copy components from the source item to the result.

result_processors:
  enchantments:
    type: copy_from_source

add

Directly add specified values to the result item.

result_processors:
  enchantments:
    type: add
    data:
      minecraft:sharpness: 5
      minecraft:mending: 1

merge_source

Intelligently merge source item components with result item components. For enchantments, the higher level is used; for attributes, modifiers are merged.

result_processors:
  attributes:
    type: merge_source

remove

Remove components from the result item. Without data, all components are removed; with data, specific items are removed.

# Remove all enchantments
result_processors:
  enchantments:
    type: remove

# Remove specific enchantments
result_processors:
  enchantments:
    type: remove
    data:
      value:
        - "minecraft:sharpness"
        - "minecraft:mending"

Source Item Meaning

The meaning of the source item varies by recipe type:

Recipe Type	Source Item
Anvil/Smithing	base item (left slot)
Smelting/Stonecutting/Brewing	input item
Crafting table	null (no source item)

Supported Component Types

Basic Components

Component	Description	Supported Strategies
all	Copy all components	copy_from_source only
display_name	Display name	All
lore	Lore text	All
enchantments	Enchantments	All
attributes	Attribute modifiers	All
item_flag	Item flags	All
trim	Armor trim	copy_from_source, remove
unbreakable	Unbreakable	All
custom_model_data	Custom model data	All

1.20.5+ Components

Component	Description	Supported Strategies
food	Food properties	All
hide_tooltip	Hide tooltip	All
item_name	Item name	All
max_stack_size	Max stack size	All
rarity	Rarity	All
fire_resistance	Fire resistance	All

1.21+ Components

Component	Description	Supported Strategies
tool	Tool properties	All

1.21.4+ Components

Component	Description	Supported Strategies
custom_model_data_component	Custom model data component	All
item_model	Item model	All

Special Components

Component	Description	Supported Strategies
custom_persistent_data	Custom persistent data (PDC)	All

Complete Examples

Anvil Recipe Example

type: anvil
result: 'minecraft:diamond_sword'
base: 'minecraft:netherite_sword'
addition: 'minecraft:nether_star'
cost_level: 10

result_processors:
  # Copy enchantments from source
  enchantments:
    type: copy_from_source

  # List format example: copy source enchantments, remove sharpness, then add mending
  # enchantments:
  #   - type: copy_from_source
  #   - type: remove
  #     data:
  #       value:
  #         - "minecraft:sharpness"
  #   - type: add
  #     data:
  #       minecraft:mending: 1

  # Copy display name
  display_name:
    type: copy_from_source

  # Add custom lore (single action)
  lore:
    type: add
    data:
      value:
        - "&7Legendary Weapon"
        - "&aForged with Nether Star"

  # List format example: copy lore from source, then append custom lines
  # lore:
  #   - type: copy_from_source
  #   - type: add
  #     data:
  #       value:
  #         - "&7Crafted via anvil"

  # Merge attributes
  attributes:
    type: merge_source

  # Add item flags
  item_flag:
    type: add
    data:
      value:
        - "HIDE_ENCHANTS"
        - "HIDE_ATTRIBUTES"

  # Set as unbreakable
  unbreakable:
    type: add
    data:
      value: true

  # Copy armor trim
  trim:
    type: copy_from_source

Smithing Recipe Example

type: 'vanilla_smithing_transform'
result: 'minecraft:netherite_sword'
base: 'minecraft:diamond_sword'
addition: 'minecraft:netherite_ingot'
template: 'minecraft:netherite_upgrade_smithing_template'

result_processors:
  # Copy all components
  all:
    type: copy_from_source

  # Add custom enchantments
  enchantments:
    type: add
    data:
      minecraft:sharpness: 5

Smelting Recipe Example

type: 'vanilla_smelting_furnace'
result: 'minecraft:diamond'
source: 'minecraft:coal_ore'
experience: 1.0
cooking_time: 200

result_processors:
  # Add custom lore
  lore:
    type: add
    data:
      value:
        - "&7Obtained through smelting"

Custom Persistent Data (PDC) Example

type: anvil
result: 'minecraft:diamond_sword'
base: 'minecraft:iron_sword'
addition: 'minecraft:diamond'

result_processors:
  custom_persistent_data:
    # Single action: copy all PDC
    type: copy_from_source

    # List format example: copy then add custom key
    # - type: copy_from_source
    # - type: add
    #   data:
    #     myns:custom_key: "value"

    # Copy only specific key
    # type: copy_from_source
    # data:
    #   key: "myns:mykey"
    #   type: STRING

    # Set PDC key-value pairs directly
    # type: add
    # data:
    #   myns:key1: "string_value"
    #   myns:key2: 42
    #   myns:key3: true

    # Merge source PDC (only copies keys not in result)
    # type: merge_source

    # Clear all PDC
    # type: remove

    # Remove specific keys
    # type: remove
    # data:
    #   keys:
    #     - "myns:key1"
    #     - "myns:key2"

Legacy Syntax Compatibility

The old copy_components_rules syntax is still supported and will be automatically converted to the copy_from_source strategy:

# Old syntax
copy_components_rules:
  - 'enchantments'
  - 'display_name'
  - 'lore'

# Equivalent to new syntax
result_processors:
  enchantments:
    type: copy_from_source
  display_name:
    type: copy_from_source
  lore:
    type: copy_from_source

AdvancedEnchantments Support

If AdvancedEnchantments plugin is installed, you can also use the ae_enchantments component:

result_processors:
  ae_enchantments:
    type: copy_from_source
    # type: merge_source
    # type: remove