Math Calculator MCP Server

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { z } from "zod"; export function createMcpServer() { const server = new McpServer({ name: "math-server", version: "1.0.0", }); server.tool( "calculate", { operation: z.enum(["add", "subtract", "multiply", "divide"]), a: z.number(), b: z.number(), }, async ({ operation, a, b }) => { switch (operation) { case "add": return { content: [{ type: "text", text: String(a + b) }] }; case "subtract": return { content: [{ type: "text", text: String(a - b) }] }; case "multiply": return { content: [{ type: "text", text: String(a * b) }] }; case "divide": if (b === 0) { return { isError: true, content: [{ type: "text", text: "Division by zero" }] }; } return { content: [{ type: "text", text: String(a / b) }] }; } } ); return server; }