APIs are systems of tools and resources in an operating system that enable developers to create software applications. So-called “open APIs“ – where specifications are available for outside programmers to build upon – are considered important for the growth of interoperable health information technology and new innovations.
APIs are important in health IT because they allow programmers to access key data from other sources and integrate that data into their own applications. Think of an API as a conduit that allows program creators to “grab“ data sources. A good example of consumer API use is a smartphone weather app, which takes data from other sources and organizes it so you know whether you’ll need sunscreen or a snow shovel.
APIs have the potential to improve interoperability and patient access to their own data. APIs can also help create more useful resources on patient care.