MCP Boilerplate

import { randomUUID } from "node:crypto"; import { NextFunction, Request, Response } from "express"; // Generate a unique ID export function useId() { return `mcp-${randomUUID().replace(/-/g, "")}`; } // Add the ID to the request export function useRequestId(req: Request, res: Response, next: NextFunction) { const id = useId(); req.id = id; res.setHeader("X-Request-Id", id); next(); } // Extend Express Request declare global { namespace Express { interface Request { id: string; } } }