{
  "name": "format",
  "description": "Formats a value using a .NET format string and optional culture; useful for currencies, dates, and number rendering",
  "signature": {
    "input": {
      "kind": "scalar",
      "description": "Value to format",
      "required": true,
      "mode": "ValueOrExpression"
    },
    "children": {
      "pattern": {
        "type": "string",
        "kind": "format-pattern",
        "description": "Composite format string",
        "required": true,
        "mode": "ValueOrExpression",
        "cardinality": "ExactlyOne",
        "role": "Option",
        "projection": "Value"
      },
      "culture": {
        "type": "string",
        "kind": "culture-name",
        "description": "Optional culture name used when formatting",
        "required": false,
        "mode": "ValueOrExpression",
        "cardinality": "ZeroOrOne",
        "role": "Option",
        "projection": "Value"
      }
    },
    "output": {
      "mode": "Value",
      "kind": "text",
      "description": "Resolves to the formatted string"
    }
  }
}