minecraft-bedrock-json-schemas/source/behavior/items/format/components/custom_components.json

{
    "$id": "blockception.minecraft.behavior.items.minecraft.custom_components",
    "title": "Custom Components",
    "description": "Used to register custom components.",
    "additionalProperties": false,
    "type": "array",
    "items": {
        "type": "string"
    }
}