Express MCP Server

import * as z from "zod"; import type { ToolConfig } from "../server/mcp"; export const tools: ToolConfig[] = [ { name: "add", description: "Add two numbers", inputSchema: { a: z.number().describe("First number"), b: z.number().describe("Second number"), }, handler: async (args) => { const a = args.a as number; const b = args.b as number; return `${a} + ${b} = ${a + b}`; }, }, { name: "multiply", description: "Multiply two numbers", inputSchema: { x: z.number().describe("First number"), y: z.number().describe("Second number"), }, handler: async (args) => { const x = args.x as number; const y = args.y as number; return `${x} * ${y} = ${x * y}`; }, }, { name: "echo", description: "Echo a message", inputSchema: { message: z.string().describe("Message to echo"), }, handler: async (args) => { const message = args.message as string; return `Echo: ${message}`; }, }, ];