Did you ever want to have a quick-and-easy way to test-out an API without having to write code? Now with the YouTube API you can. They now offer developers this web-based interactive form which lets you explore and interact with the YouTube API. You can setup and test API calls directly: choose operations, specify parameters, and see the Atom, RSS or JSON results.
Google has released version 3.0 of the YouTube Data API which includes new functionality and features including Topics API, Universal Search, Channel Bulletin Post, Full Subscriber List Management, and more.