Introduction to the REST API
A REST (REpresentational State Transfer) API is an architectural style for an application program interface (API) that uses HTTP requests (GET, PUT, POST, DELETE) and a URI (resource identifier) to access and use data. There is no official standard for REST API however, the OpenAPI specification has become a common standard.
If you are new to REST APIs, here are a few tutorials that could help:
Refer to the EFT REST API Reference PDF for details about the specific nodes.
Download the ZIP file for examples.