You have a hectic business trip to Seattle coming up and its time to choose hotels. Sure, there's cost, availability, checkout times ad whether it has a pool or gym to consider. But there's another important factor: proximity. The Travel Time API demo uses Seattle. See graphic below. You have 4 meetings scheduled over a couple of days: At Amazon's headquarters, a drop in at Starbucks for a chat with a friend, meet at the headquarters of Walkscore, and then lastly at Zillow.
The Streak API integrates its client relationship management (CRM) platform into other applications like MailChimps and Wufoo. The API's webpage reveals that it requires an API key and uses HTTP Basic Auth. The request format supports Create, retrieve, update, and delete (CRUD) with response in JSON. The purpose of the API is to manage CRM relationships through your application.