MCP Server AntV

Instructions

Implementation Reference

• src/tools/query_antv_document.ts:217-290 (handler)

  The main tool definition including name, description, schema reference, and the async run handler function that fetches AntV documentation based on query parameters, handles simple and complex (sub)tasks, generates responses with guidance.
  export const QueryAntVDocumentTool = { name: 'query_antv_document', description: `AntV Context Retrieval Assistant - Fetches relevant documentation, code examples, and best practices from official AntV resources. Supports ${Object.keys(ANTV_LIBRARY_META).join(', ')} libraries, and handles subtasks iterative queries. **MANDATORY: Must be called for ANY AntV-related query (${Object.keys(ANTV_LIBRARY_META).join(', ')}), regardless of task complexity. No exceptions for simple tasks.** When to use this tool: - **Implementation & Optimization**: To implement new features, modify styles, refactor code, or optimize performance in AntV solutions. - **Debugging & Problem Solving**: For troubleshooting errors, unexpected behaviors, or technical challenges in AntV projects. - **Learning & Best Practices**: To explore official documentation, code examples, design patterns, or advanced features. - **Complex Task Handling**: For multi-step tasks requiring subtask decomposition (e.g., "Build a dashboard with interactive charts"). - **Simple modifications**: Even basic changes like "Change the chart's color" or "Update legend position" in AntV context.`, inputSchema: QueryAntVDocumentInputSchema, async run(args: QueryAntVDocumentArgs) { const startTime = Date.now(); try { const libraryId = getLibraryId(args.library); let response: string; let hasDocumentation = false; if (args.subTasks && args.subTasks.length > 0) { // Handle complex task with subtasks const result = await handleComplexTask(args, libraryId, args.subTasks); response = result.response; hasDocumentation = result.hasDocumentation; } else { // Handle simple query const { documentation, error } = await fetchLibraryDocumentation( libraryId, args.topic, args.tokens, ); hasDocumentation = documentation !== null && documentation.trim() !== ''; response = generateSimpleResponse(args, documentation, error); } const processingTime = Date.now() - startTime; return { content: [{ type: 'text', text: response }], _meta: { topic: args.topic.split(',').map((t: string) => t.trim()), intent: args.intent, library: args.library, hasDocumentation, processingTime, }, }; } catch (error) { logger.error('Failed to execute query tool:', error); const processingTime = Date.now() - startTime; return { content: [ { type: 'text', text: `❌ Processing failed: ${ error instanceof Error ? error.message : 'Unknown error' }`, }, ], isError: true, _meta: { topic: args.topic ? args.topic.split(',').map((t) => t.trim()) : [], intent: args.intent, library: args.library, hasDocumentation: false, processingTime, error: error instanceof Error ? error.message : 'Unknown error', }, }; } }, };
• src/tools/query_antv_document.ts:13-53 (schema)

  Zod input schema defining parameters: library, query, topic, intent, tokens, optional subTasks.
  const QueryAntVDocumentInputSchema = z.object({ library: z .enum(Object.keys(ANTV_LIBRARY_META) as [AntVLibrary, ...AntVLibrary[]]) .describe( 'Specified AntV library type, intelligently identified based on user query', ), query: z .string() .min(1) .describe('User specific question or requirement description'), topic: z .string() .min(1) .describe( 'Technical topic keywords (comma-separated). Provided by `extract_antv_topic` or directly extracted from simple questions.', ), intent: z .string() .min(1) .describe( 'Extracted user intent, provided by extract_antv_topic tool or directly extracted from simple questions.', ), tokens: z .number() .int() .min(CONTEXT7_TOKENS.min) .max(CONTEXT7_TOKENS.max) .default(CONTEXT7_TOKENS.default) .describe('tokens for returned content'), subTasks: z .array( z.object({ query: z.string().min(1).describe('Subtask query'), topic: z.string().min(1).describe('Subtask topic'), }), ) .optional() .describe( 'Decomposed subtask list for complex tasks, supports batch processing', ), });
• src/index.ts:17-29 (registration)

  Registration of QueryAntVDocumentTool (and ExtractAntVTopicTool) in the MCP server using server.tool() with schema validation wrapper.
  [ExtractAntVTopicTool, QueryAntVDocumentTool].forEach((tool) => { const { name, description, inputSchema, run } = tool; this.server.tool(name, description, inputSchema.shape, (async ( args: any, ) => { const { success, errorMessage } = validateSchema(inputSchema, args); if (success) { return await run(args); } else { throw new Error(errorMessage); } }) as any); });
• src/tools/query_antv_document.ts:58-136 (helper)

  Helper function for handling complex queries by processing multiple subtasks in parallel and compiling results into a comprehensive response.
  args: QueryAntVDocumentArgs, libraryId: string, subTasks: Array<{ query: string; topic: string }>, ): Promise<{ response: string; hasDocumentation: boolean }> { const libraryConfig = getLibraryConfig(args.library); const tokenPerSubTask = Math.min( Math.floor(args.tokens / subTasks.length), 1000, ); let response = `# ${libraryConfig.name} Complex Task Solution\n\n`; response += `**Question**: ${args.query}\n`; response += `**Complexity**: Decomposed into ${subTasks.length} subtasks\n\n---\n\n`; const subTaskPromises = subTasks.map(async (subTask, index) => { try { logger.info( `Processing subtask ${index + 1}/${subTasks.length}: ${subTask.topic}`, ); const { documentation, error } = await fetchLibraryDocumentation( libraryId, subTask.topic, tokenPerSubTask, ); return { task: subTask, documentation, error }; } catch (error) { logger.error(`Failed to process subtask ${index + 1}:`, error); return { task: subTask, documentation: null, error: error instanceof Error ? error.message : String(error), }; } }); const results = await Promise.all(subTaskPromises); const hasDocumentation = results.some( (r) => r.documentation !== null && r.documentation.trim() !== '', ); // Generate subtask responses for (const [index, result] of results.entries()) { response += `## 📋 Subtask ${index + 1}: ${result.task.query}\n\n`; response += `**Subtask Topic**: ${result.task.topic}\n\n`; if (result.documentation) { response += `${result.documentation}\n\n`; } else { response += `⚠️ No relevant documentation found for this subtask.\n`; if (result.error) { response += `Error: ${result.error}\n`; } } response += `---\n\n`; } // Add integration summary const successCount = results.filter((r) => r.documentation).length; response += `## 🎯 Integration Summary\n\n`; if (successCount === results.length) { response += `✅ **Complete Solution**: Found documentation for all ${successCount} subtasks.\n\n`; response += `**Next Steps**: Combine the solutions above into your implementation.\n\n`; } else if (successCount > 0) { response += `⚠️ **Partial Solution**: Found documentation for ${successCount}/${results.length} subtasks.\n\n`; response += `**Recommendations**:\n`; response += `- Implement features with available documentation first\n`; response += `- For missing parts, check official examples or community resources\n\n`; } else { response += `❌ **Limited Results**: No documentation found for the subtasks.\n\n`; response += `**Suggestions**:\n`; response += `- Try refining the query with more specific keywords\n`; response += `- Check the official ${libraryConfig.name} documentation directly\n\n`; } response += generateImplementationGuidance(args.intent, args.library); response += generateFollowUpNotice(); return { response, hasDocumentation }; }
• src/tools/query_antv_document.ts:139-167 (helper)

  Helper function to generate response for simple (non-subtask) queries.
  args: QueryAntVDocumentArgs, documentation: string | null, error?: string, ): string { const libraryConfig = getLibraryConfig(args.library); if (!documentation) { return ( `# ${libraryConfig.name} Query Result\n\n` + `**Question**: ${args.query}\n\n` + `❌ **No Documentation Found**\n\n` + `${error ? `Error: ${error}\n\n` : ''}` + `**Suggestions**:\n` + `- Try refining your search terms\n` + `- Check the official ${libraryConfig.name} documentation\n` + `- Ensure you're using the correct library for your use case\n\n` + generateFollowUpNotice() ); } let response = `# ${libraryConfig.name} Solution\n\n`; response += `**User Question**: ${args.query}\n`; response += `**Search Topic**: ${args.topic}\n`; response += `${documentation}\n\n`; response += generateImplementationGuidance(args.intent, args.library); response += generateFollowUpNotice(); return response; }