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

{
  "$id": "blockception.minecraft.behavior.items.minecraft:on_use",
  "title": "On Use",
  "description": "The on_use item component allows you to receive an event when the item is used.",
  "type": "object",
  "additionalProperties": false,
  "required": ["on_use"],
  "properties": {
    "on_use": {
      "title": "On Use",
      "description": "Event trigger for when the item is used.",
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "event": { "type": "string", "title": "Event", "description": "Event trigger for when the item is used."},
        "target": { "type": "string", "title": "Target", "description": "Event Target.", "enum": ["self"] }
      }
    }
  },
  "examples": [
    {
      "on_use": "minecraft:entity_transformed"
    }
  ]
}