Middleware Generator

Writing middleware means handling edge cases, async errors, and weird Express patterns. Describe what you need and get production-ready middleware.

One command. Zero config. Just works.

Quick Start

npx ai-middleware "rate limit 100 req/min per IP"

What It Does

• Generates Express middleware from descriptions
• Handles rate limiting, auth, logging, and more
• Includes proper error handling
• TypeScript support built in

Usage Examples

# Rate limiting
npx ai-middleware "rate limit 100 req/min per IP"

# JWT auth
npx ai-middleware "JWT auth with role-based access" -t

# Request logging
npx ai-middleware "request logging with response time" -o logger.ts -t

# API key validation
npx ai-middleware "validate API key from header"

Best Practices

• Order matters - put auth before route handlers
• Handle errors - don't let middleware crash the server
• Keep it focused - one middleware, one job
• Test thoroughly - middleware affects every request

When to Use This

• Adding new middleware to an API
• Need common patterns like rate limiting
• Learning middleware best practices
• Prototyping API features quickly

Part of the LXGIC Dev Toolkit

This is one of 110+ free developer tools built by LXGIC Studios. No paywalls, no sign-ups, no API keys on free tiers. Just tools that work.

Find more:

• GitHub: https://github.com/LXGIC-Studios
• Twitter: https://x.com/lxgicstudios
• Substack: https://lxgicstudios.substack.com
• Website: https://lxgic.dev

Requirements

No install needed. Just run with npx. Node.js 18+ recommended. Needs OPENAI_API_KEY environment variable.

npx ai-middleware --help

How It Works

Takes your plain English description and generates Express-compatible middleware code. The AI knows common patterns and includes proper async handling, error handling, and TypeScript types.

License

MIT. Free forever. Use it however you want.