# Rate Limit Gen

> Generate rate limiting configuration. Use when protecting APIs from abuse.

- Skill: `lxgic-studios/rate-limit-gen` (Agent Skill, multi-file: 6 files)
- Install (CLI): `npx skillmds@latest add lxgic-studios/rate-limit-gen`
- Raw SKILL.md: https://api.skillmd.com/api/skills/lxgic-studios/rate-limit-gen/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: LXGIC-Studios (https://skillmd.com/u/lxgic-studios)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/lxgic-studios/rate-limit-gen

---


# 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

```bash
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

```bash
# 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.

```bash
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.