The Open New York Transit Subway Entrance And Exit Data API is a service part of the State of New York's data.ny.gov open data initiative. This API provides access to a dataset including varying information fields pertaining to subway station entrances and exits. Accessible information includes the corresponding station name, division, line, and exact longitude and latitude coordinates for these subway terminals. The dataset is also filterable using any of these variables. The API can be accessed through HTTP communication, and available response types include JSON, XML, and CSV. The documentation features a live testing interface to run example requests. All requests must posses an app token in order to be authenticated.