Show HN: UsageFlow – API usage metering, rate-limits and usage reporting

I’m launching UsageFlow, a simple tool for API owners who want automatic API usage metering and full control over their endpoints — all without any hassle.

With just a few lines of code, the UsageFlow SDK gives you:

Automatic discovery of API endpoints

User identification

Usage metering

Rate-limits and automatic blocking

Reporting usage events to your existing billing or metering system

Supports: Go (Gin), Python (FastAPI, Flask), Node.js (Express, Fastify, NestJS)

Perfect for AI APIs or SaaS platforms that want to scale fast — focus on building your product while UsageFlow handles usage tracking automatically.

No developer skills required to:

Update usage rules

Apply limits

Report usage

Everything works with a few clicks — your entire usage platform is in your hands, instantly.

I’m opening this for first testers. If you run an API and want to try UsageFlow, comment below or DM me — I will create your account and get you started in minutes.

Learn more at: https://usageflow.io