Express.js

Build Node.js APIs and web apps with Express.js. Generates routes, middleware chains, error handlers, authentication, and production configs with the most widely adopted Node.js web framework.

This skill helps you build robust Node.js applications with Express.js. It generates RESTful routes, middleware stacks for auth/validation/logging, centralized error handling, rate limiting, security headers with Helmet, and production configurations with clustering and graceful shutdown.

When to use

Use when building Node.js REST APIs, middleware-heavy web apps, or when extending existing Express applications with new routes, authentication, or production hardening.

Examples

Production API setup

Configure Express for production

Set up an Express.js API with Helmet security headers, CORS, rate limiting, request logging with Morgan, and centralized error handling middleware

Auth middleware

Build JWT authentication flow

Create Express middleware for JWT authentication with refresh tokens, role-based route guards, and secure cookie configuration

REST API with validation

Build validated CRUD endpoints

Create Express REST endpoints for a product API with Zod request validation, pagination, filtering, and proper HTTP status codes