{
  "parameters": {
    "type": "object",
    "properties": {
      "rules": {
        "type": "array",
        "description": "Field cast rules.",
        "items": {
          "type": "object",
          "properties": {
            "field": {
              "type": "string",
              "description": "Field name to cast."
            },
            "as": {
              "type": "string",
              "description": "Target scalar type.",
              "enum": [
                "string",
                "integer",
                "number",
                "boolean"
              ],
              "default": "string"
            }
          }
        }
      }
    }
  },
  "inputs": [
    {
      "key": "in",
      "label": "Input",
      "required": true
    }
  ],
  "outputs": [
    {
      "key": "out",
      "label": "Output",
      "required": true
    }
  ],
  "lineage": {
    "mode": "row_preserving"
  },
  "deterministic": true,
  "runtimeSupported": true
}