middleware-gen

name	middleware-gen
description	Generate Express middleware from plain English. Use when building API middleware.

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.