With the digitalization of the healthcare system the need for standardization of data access has drastically increased. At the same time a push to more strongly include patients in the medical process created demand for them to have more access on their own data. These developments led to the creation of both FHIR and SMART on FHIR and has peaked in the Health Outcomes Observatory (H2O) project’s effort to establish patient-reported outcomes as a standard tool for patient perspective inclusion in healthcare. This paper aims to show that these technologies allow to achieve the goals set out by the H2O project using solely open-source solutions.