[
  {
    "name": "render_data_viz",
    "description": "Render data visualization resources. Use the `uri` field to specify the visualization type, and pass all parameters in the `data` object. All charts use ECharts library.\n\nSupported URIs:\n- `ui://data-dashboard/metrics` — Metric card dashboard. data: {title, metrics: [{label, value, change?, change_type?}]}\n- `ui://data-dashboard/chart` — Single chart. data: {title, chart_type, data: {categories?, series}, width?, height?, stacked?, smooth?, show_label?, theme?}\n- `ui://data-dashboard/multi-chart` — Multiple charts in grid. data: {title, charts: [{title, chart_type, data, height?, stacked?, smooth?, show_label?}], columns?, theme?}",
    "inputSchema": {
      "type": "object",
      "properties": {
        "uri": {
          "type": "string",
          "enum": ["ui://data-dashboard/metrics", "ui://data-dashboard/chart", "ui://data-dashboard/multi-chart"],
          "description": "Resource URI that determines the visualization type"
        },
        "data": {
          "type": "object",
          "description": "Parameters for the specified URI. Structure depends on uri:\n- metrics: {title, metrics: [{label, value, change?, change_type?}]}\n- chart: {title, chart_type, data: {categories?, series}, width?, height?, stacked?, smooth?, show_label?, theme?}\n- multi-chart: {title, charts: [{title, chart_type, data, height?, stacked?, smooth?, show_label?}], columns?, theme?}",
          "properties": {
            "title": {
              "type": "string",
              "description": "Title displayed at the top of the visualization"
            },
            "metrics": {
              "type": "array",
              "description": "[uri=metrics] Array of metric objects to display as cards",
              "items": {
                "type": "object",
                "properties": {
                  "label": { "type": "string", "description": "Metric name" },
                  "value": { "type": "string", "description": "Metric value" },
                  "change": { "type": "string", "description": "Change indicator, e.g. '+12.5%'" },
                  "change_type": { "type": "string", "enum": ["up", "down", "neutral"], "description": "Direction of change" }
                },
                "required": ["label", "value"]
              }
            },
            "chart_type": {
              "type": "string",
              "enum": ["line", "bar", "pie", "radar", "scatter", "gauge"],
              "description": "[uri=chart] Type of chart to render"
            },
            "data": {
              "type": "object",
              "description": "[uri=chart] Chart data object",
              "properties": {
                "categories": {
                  "type": "array",
                  "items": { "type": "string" },
                  "description": "X-axis labels (for line, bar, radar)"
                },
                "series": {
                  "type": "array",
                  "description": "Array of data series",
                  "items": {
                    "type": "object",
                    "properties": {
                      "name": { "type": "string", "description": "Series name" },
                      "data": { "type": "array", "description": "Data values" }
                    },
                    "required": ["name", "data"]
                  }
                }
              },
              "required": ["series"]
            },
            "width": {
              "type": "string",
              "description": "[uri=chart] CSS width. Default: '100%'",
              "default": "100%"
            },
            "height": {
              "type": "string",
              "description": "[uri=chart] CSS height. Default: '400px'",
              "default": "400px"
            },
            "stacked": {
              "type": "boolean",
              "description": "[uri=chart] Stack series (line/bar). Default: false",
              "default": false
            },
            "smooth": {
              "type": "boolean",
              "description": "[uri=chart] Smooth curves (line). Default: false",
              "default": false
            },
            "show_label": {
              "type": "boolean",
              "description": "[uri=chart] Show data labels. Default: false",
              "default": false
            },
            "theme": {
              "type": "string",
              "enum": ["light", "dark"],
              "description": "Color theme. Default: 'light'",
              "default": "light"
            },
            "columns": {
              "type": "integer",
              "description": "[uri=multi-chart] Grid columns (1-4). Default: 2",
              "default": 2,
              "minimum": 1,
              "maximum": 4
            },
            "charts": {
              "type": "array",
              "description": "[uri=multi-chart] Array of chart objects",
              "items": {
                "type": "object",
                "properties": {
                  "title": { "type": "string", "description": "Chart title" },
                  "chart_type": { "type": "string", "enum": ["line", "bar", "pie", "radar", "scatter", "gauge"], "description": "Type of chart" },
                  "data": {
                    "type": "object",
                    "description": "Chart data",
                    "properties": {
                      "categories": { "type": "array", "items": { "type": "string" } },
                      "series": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "properties": {
                            "name": { "type": "string" },
                            "data": { "type": "array" }
                          },
                          "required": ["name", "data"]
                        }
                      }
                    },
                    "required": ["series"]
                  },
                  "height": { "type": "string", "default": "350px" },
                  "stacked": { "type": "boolean", "default": false },
                  "smooth": { "type": "boolean", "default": false },
                  "show_label": { "type": "boolean", "default": false }
                },
                "required": ["title", "chart_type", "data"]
              }
            }
          }
        }
      },
      "required": ["uri", "data"]
    }
  }
]