The document discusses the BlueButton vision of enabling beneficiaries to connect their healthcare data to trusted applications and services through standards-based APIs. It proposes using the POET (Pre-Oauth Entity Trust) API to leverage existing Direct Trust networks to validate the trustworthiness of third-party applications requesting access to healthcare data APIs like FHIR. The document also outlines plans to develop and prototype a BlueButtonOnFHIR API to include patient profiles and ExplanationOfBenefit resources at an upcoming FHIR code-a-thon event.