In PayPal we decided to move away from two of our enterprise schedulers, Control-M and UC4, to Airflow. As we started the journey, the first most important step that we wanted to take was to build all the mandatory API’s on the top of Airflow so that we could integrate with our Self-Service Tools. In this talk we share the challenges that we ran into while building APIs on top of Airflow and how we overcame them.