Armor trim definition
This feature is exclusive to Java Edition.
Trim materials and trim patterns define the tooltip and appearance of trimmed armor items.
Definition
Trim materials and patterns can be defined in data packs, as part of the directory structure below, or inline in the trim and provides_trim_material data components.
data pack name.zip or 
data pack name
pack.mcmeta- data
- namespace
- trim_material
- <name>.json
- trim_pattern
- <name>.json
- More directories…
JSON format
Trim material
Trim materials have the following format:
- [NBT Compound / JSON Object] The root object.
- [String] asset_name: Suffix to be used in sprite names and translation keys.
- [NBT Compound / JSON Object] override_armor_assets: Asset name overrides for specific armor materials. Used in vanilla to select darker variants when the trim and armor have the same material.
- [String] <equipment asset id>: Suffix to be used in sprite names and translation keys for armor items with the corresponding
asset_idspecified in theequippabledata component.
- [String] <equipment asset id>: Suffix to be used in sprite names and translation keys for armor items with the corresponding
- [String][NBT List / JSON Array][NBT Compound / JSON Object] description: Text component to use as the trim material's name. See Text component format.
Trim pattern
Trim patterns have the following format:
- [NBT Compound / JSON Object] The root object.
- [String] asset_id: A resource location used as a prefix in sprite names and translation keys.
- [Boolean] decal: False for all vanilla trim patterns.
- [String][NBT List / JSON Array][NBT Compound / JSON Object] description: Text component to use as the trim pattern's name. See Text component format.
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