[
  {
    "name": "render_dashboard",
    "description": "Render an interactive data dashboard with metric cards. Pass an array of metrics, each with label, value, and optional change/change_type fields. The dashboard is rendered as an HTML card UI.",
    "inputSchema": {
      "type": "object",
      "properties": {
        "title": {
          "type": "string",
          "description": "Dashboard title, e.g. 'Sales Overview'"
        },
        "metrics": {
          "type": "array",
          "description": "Array of metric objects to display as cards",
          "items": {
            "type": "object",
            "properties": {
              "label": {
                "type": "string",
                "description": "Metric name, e.g. 'Revenue'"
              },
              "value": {
                "type": "string",
                "description": "Metric value, e.g. '$12,345'"
              },
              "change": {
                "type": "string",
                "description": "Change indicator, e.g. '+12.5%' or '-3.2%'"
              },
              "change_type": {
                "type": "string",
                "enum": ["up", "down", "neutral"],
                "description": "Direction of change"
              }
            },
            "required": ["label", "value"]
          }
        }
      },
      "required": ["title", "metrics"]
    }
  }
]