Vibe-Coder MCP Server

Implementation Reference

• src/tool-handlers.ts:54-81 (handler)

  The primary handler function that executes the logic for the 'start_feature_clarification' tool. It validates input, creates a new feature object, persists it, generates the first clarification question, and returns a response with the feature ID and question.

  /**
   * Start feature clarification handler
   */
  const startFeatureClarificationHandler: ToolHandler<z.infer<typeof StartFeatureClarificationSchema>> = async (params) => {
    try {
      const { featureName, initialDescription } = StartFeatureClarificationSchema.parse(params);
      
      // Create a new feature
      const feature = createFeatureObject(featureName, initialDescription);
      updateFeature(feature.id, feature);
      
      // Get the first clarification question
      const firstQuestion = getNextClarificationQuestion(feature);
      
      return {
        content: [{
          type: "text",
          text: `Feature ID: ${feature.id}\n\nLet's clarify your feature request. ${firstQuestion}`
        }]
      };
    } catch (error) {
      if (error instanceof z.ZodError) {
        const errorMessage = error.errors.map(e => `${e.path.join('.')}: ${e.message}`).join(', ');
        return createToolErrorResponse(`Validation error: ${errorMessage}`);
      }
      return createToolErrorResponse(error instanceof Error ? error.message : "Unknown error");
    }
  };

• src/tool-handlers.ts:48-52 (schema)

  Zod schema defining the input parameters for the 'start_feature_clarification' tool: featureName (required string) and optional initialDescription.

  // Schema for start_feature_clarification
  const StartFeatureClarificationSchema = z.object({
    featureName: z.string().min(2).max(100),
    initialDescription: z.string().optional().default("")
  });

• src/tool-handlers.ts:510-538 (registration)

  Registration of the 'start_feature_clarification' tool in the tool registry, specifying the handler, description, JSON schema for inputs, and example arguments.

  toolRegistry.register(
    'start_feature_clarification', 
    startFeatureClarificationHandler,
    'Start the clarification process for a new feature',
    {
      type: "object",
      properties: {
        featureName: {
          type: "string",
          description: "Name of the feature"
        },
        initialDescription: {
          type: "string",
          description: "Initial description of the feature"
        }
      },
      required: ["featureName"]
    },
    [
      {
        featureName: "User Authentication",
        initialDescription: "Add login and registration functionality to the application"
      },
      {
        featureName: "Data Export",
        initialDescription: "Allow users to export their data in CSV and JSON formats"
      }
    ]
  );

• src/mcp-server.ts:297-318 (registration)

  Direct registration of the 'start_feature_clarification' tool using the MCP server SDK, with inline Zod schema and simplified handler logic (appears to be a duplicate or alternative implementation).

  server.tool(
    "start_feature_clarification",
    { 
      featureName: z.string().min(2).max(100),
      initialDescription: z.string().optional().default("")
    },
    async ({ featureName, initialDescription }) => {
      // Create a new feature
      const feature = createFeatureObject(featureName, initialDescription);
      updateFeature(feature.id, feature);
      
      // Get the first clarification question
      const firstQuestion = getNextClarificationQuestion(feature);
      
      return {
        content: [{
          type: "text",
          text: `Feature ID: ${feature.id}\n\nLet's clarify your feature request. ${firstQuestion}`
        }]
      };
    }
  );