Developer's Guide

The reference SMART Genomics API server can be found here. Instructions for installation and use are described in the GitHub repository.
There exists a demo app here which demonstrates the functionality of the SMART Genomics API as well as how to perform API requests.
This page contains a tutorial to how to authenticate and make API calls with SMART genomics in your apps.

For more information on FHIR, please see their website
For more information on SMART on FHIR, please see their documentation