{
  "name": "validators.url",
  "description": "Validates that a value or resolved expression result is a URL, throwing if validation fails",
  "signature": {
    "input": {
      "kind": "url",
      "description": "URL value or expression selecting the node or nodes to validate",
      "required": true,
      "mode": "ValueOrExpression"
    }
  }
}