Rate Limit Generator

Rate limiting is essential but the config is fiddly. Describe your limits in plain English and get working configuration.

One command. Zero config. Just works.

Quick Start

npx ai-rate-limit "100 requests per minute per IP"

What It Does

• Generates rate limit configuration
• Supports IP, user, and API key based limiting
• Includes sliding window and fixed window options
• Works with Express, Fastify, and more

Usage Examples

# Basic IP rate limiting
npx ai-rate-limit "100 requests per minute per IP"

# Login protection
npx ai-rate-limit "10 login attempts per hour, block for 30 min"

# API tier limits
npx ai-rate-limit "free tier 100/day, pro 10000/day"

Best Practices

• Return headers - let clients know their quota
• Use sliding windows - smoother than fixed
• Have escape hatches - allow bursts for legitimate use
• Log rate limit hits - detect abuse patterns

When to Use This

• Protecting API from abuse
• Implementing usage tiers
• Preventing brute force attacks
• Adding fair use policies

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://lxgicstudios.com

Requirements

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

npx ai-rate-limit --help

How It Works

Takes your plain English rate limit rules and generates configuration for rate limiting middleware. Includes Redis setup for distributed rate limiting when needed.

License

MIT. Free forever. Use it however you want.

Built by LXGIC Studios

• GitHub: github.com/lxgicstudios/rate-limit-gen
• Twitter: @lxgicstudios