google publish its API explorer today

google API explorer is online today.
https://code.google.com/apis/explorer/
7 api groups is ready to use, with online manu.
With a concise interface, it is quit efficient to test these functions on line.

Actually, Flickr has been publish its api explorer for quit a long time.
and It is accessible from the URL
http://www.flickr.com/services/api/explore/?method=mathodname
for example, the entry point of photo search methods is
http://www.flickr.com/services/api/explore/?method=flickr.photos.search