From Open Source to $500K ARR: The API Monetization Playbook That Worked

This story reveals the critical shift from flat-tier pricing to usage-based metering that transformed a 14K-star open-source project into a $504K ARR business. As more developers build infrastructure tools, understanding how to align pricing with actual customer consumption—rather than feature labels—becomes essential to conversion and retention. The 91% margins and detailed revenue breakdown offer practical lessons for any developer monetizing APIs in the post-cloud-native era.