{
  "type": "object",
  "properties": {
    "chartId": {
      "type": "string",
      "description": "ID of the chart to update (works for master charts like 'chart_123' or action step charts like 'chart_456')"
    },
    "newDesiredOutcome": {
      "type": "string",
      "description": "New desired outcome text"
    }
  },
  "required": [
    "chartId",
    "newDesiredOutcome"
  ]
}