{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "required": ["meta", "prompt_text"],
  "additionalProperties": false,
  "properties": {
    "meta": {
      "type": "object",
      "required": [
        "world_id",
        "world_version",
        "style_id",
        "scene_id",
        "task_type"
      ],
      "additionalProperties": false,
      "properties": {
        "world_id": { "type": "string" },
        "world_version": {
          "type": "string",
          "pattern": "^[0-9]+\\.[0-9]+$"
        },
        "style_id": { "type": "string" },
        "scene_id": { "type": "string" },
        "task_type": {
          "type": "string",
          "enum": [
            "character_full_body",
            "scene_composition",
            "item_design",
            "prop_design"
          ]
        }
      }
    },
    "prompt_text": {
      "type": "string",
      "minLength": 20
    }
  }
}