generate_radar_chart
Create radar charts to visualize multidimensional data, enabling comparison across four or more attributes like design, functionality, and performance for Huawei and Apple phones.
Instructions
Generate a radar chart to display multidimensional data (four dimensions or more), such as, evaluate Huawei and Apple phones in terms of five dimensions: ease of use, functionality, camera, benchmark scores, and battery life.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| data | Yes | Data for radar chart, it should be an array of objects, each object contains a `name` field and a `value` field, such as, [{ name: 'Design', value: 70 }]. | |
| height | No | Set the height of chart, default is 400. | |
| style | No | Custom style configuration for the chart. | |
| theme | No | Set the theme for the chart, optional, default is 'default'. | default |
| title | No | Set the title of chart. | |
| width | No | Set the width of chart, default is 600. |
Implementation Reference
- src/utils/callTool.ts:43-110 (handler)Handler function that executes generate_radar_chart by mapping to 'radar' chart type, validating input, and generating the chart URL via external API.export async function callTool(tool: string, args: object = {}) { logger.info(`Calling tool: ${tool}`); const chartType = CHART_TYPE_MAP[tool as keyof typeof CHART_TYPE_MAP]; if (!chartType) { logger.error(`Unknown tool: ${tool}`); throw new McpError(ErrorCode.MethodNotFound, `Unknown tool: ${tool}.`); } try { // Validate input using Zod before sending to API. // Select the appropriate schema based on the chart type. const schema = Charts[chartType].schema; if (schema) { // Use safeParse instead of parse and try-catch. const result = z.object(schema).safeParse(args); if (!result.success) { logger.error(`Invalid parameters: ${result.error.message}`); throw new McpError( ErrorCode.InvalidParams, `Invalid parameters: ${result.error.message}`, ); } } const isMapChartTool = [ "generate_district_map", "generate_path_map", "generate_pin_map", ].includes(tool); if (isMapChartTool) { // For map charts, we use the generateMap function, and return the mcp result. const { metadata, ...result } = await generateMap(tool, args); return result; } const url = await generateChartUrl(chartType, args); logger.info(`Generated chart URL: ${url}`); return { content: [ { type: "text", text: url, }, ], _meta: { description: "This is the chart's spec and configuration, which can be renderred to corresponding chart by AntV GPT-Vis chart components.", spec: { type: chartType, ...args }, }, }; // biome-ignore lint/suspicious/noExplicitAny: <explanation> } catch (error: any) { logger.error( `Failed to generate chart: ${error.message || "Unknown error"}.`, ); if (error instanceof McpError) throw error; if (error instanceof ValidateError) throw new McpError(ErrorCode.InvalidParams, error.message); throw new McpError( ErrorCode.InternalError, `Failed to generate chart: ${error?.message || "Unknown error."}`, ); } }
- src/charts/radar.ts:21-46 (schema)Zod schema defining the input parameters for the generate_radar_chart tool, including data, style, theme, dimensions, and title.const schema = { data: z .array(data) .describe( "Data for radar chart, it should be an array of objects, each object contains a `name` field and a `value` field, such as, [{ name: 'Design', value: 70 }], when the data is grouped by `group`, the `group` field is required, such as, [{ name: 'Design', value: 70, group: 'Huawei' }].", ) .nonempty({ message: "Radar chart data cannot be empty." }), style: z .object({ backgroundColor: BackgroundColorSchema, palette: PaletteSchema, texture: TextureSchema, lineWidth: z .number() .optional() .describe("Line width for the lines of chart, such as 4."), }) .optional() .describe( "Style configuration for the chart with a JSON object, optional.", ), theme: ThemeSchema, width: WidthSchema, height: HeightSchema, title: TitleSchema, };
- src/server.ts:64-77 (registration)Registers the MCP tool handlers: listTools returns descriptors for all enabled charts including generate_radar_chart, callTool dispatches to the handler function.function setupToolHandlers(server: Server): void { logger.info("setting up tool handlers..."); server.setRequestHandler(ListToolsRequestSchema, async () => ({ tools: getEnabledTools().map((chart) => chart.tool), })); // biome-ignore lint/suspicious/noExplicitAny: <explanation> server.setRequestHandler(CallToolRequestSchema, async (request: any) => { logger.info("calling tool", request.params.name, request.params.arguments); return await callTool(request.params.name, request.params.arguments); }); logger.info("tool handlers set up"); }
- src/charts/radar.ts:49-54 (registration)Tool descriptor with name, description, and inputSchema for generate_radar_chart, used in listTools response.const tool = { name: "generate_radar_chart", description: "Generate a radar chart to display multidimensional data (four dimensions or more), such as, evaluate Huawei and Apple phones in terms of five dimensions: ease of use, functionality, camera, benchmark scores, and battery life.", inputSchema: zodToJsonSchema(schema), };
- src/utils/generate.ts:12-39 (helper)Helper function that generates the actual chart URL by sending the chart type ('radar') and options to the visualization server API.export async function generateChartUrl( type: string, // biome-ignore lint/suspicious/noExplicitAny: <explanation> options: Record<string, any>, ): Promise<string> { const url = getVisRequestServer(); const response = await axios.post( url, { type, ...options, source: "mcp-server-chart", }, { headers: { "Content-Type": "application/json", }, }, ); const { success, errorMessage, resultObj } = response.data; if (!success) { throw new Error(errorMessage); } return resultObj; }