This repository contains a simple, open, and scalable API used for separate UAS Service Suppliers (USS) to communicate during UAS operations as a Discovery and Synchronization Service (DSS) in accordance with ASTM WK65041. This flexible and distributed system is used to connect multiple USSs operating in the same general area to share safety information while protecting operator and consumer privacy. The system is focused on facilitating communication amongst actively operating USSs with no details about UAS operations stored or processed on the DSS.