https://github.com/18f/api-standards

https://github.com/GSA/api-standards

https://github.com/WhiteHouse/api-standards

http://docs.smarthealthit.org/

Domain Hierarchy Access Regulation for Microservice Architecture CA-Technologies-OReilly-Securing-Microservice-APIs.pdf

https://www.ics.uci.edu/~fielding/pubs/dissertation/top.htm