The Heap Analytics NodeJS Sample Code by Heap Analytics demonstrates how to access the API with tests to integrate analytics into applications. Resources include requests, user properties, track, agents, and validations.
A year ago we asked who belongs to the API billionaires club and listed several APIs that can count their API requests in the billions. Now there are many more API billionaires serving billions of requests every month. There is also a class of eight companies that are serving in the billions every single day, as shown in ProgrammableWeb Founder John Musser's talk today at Glue.