A directory of supported APIs.A machine-readable "Discovery document" for each of the supported APIs that includes:A list of API resource schemas based on JSON Schema.A list of API methods and available parameters for each method.A list of available OAuth 2.0 scopes.Inline documentation of methods, parameters and available parameter values.
Once you log in, it will fetch all your public posts on your stream and classifies each item in a topic. Later on you can view all your topics on the left and all the documents that are similar to that topic on the right. So far, the API looks solid, this was built without knowing AppEngine or OAuth. Props to the AppEngine team, you guys really did something so easy. I am in love with the Eclipse IDE integration. Very easy, took me minutes to learn it. I just used the examples online given by the Google+ team and hacked away with the API.