Does the Google+ Hangouts API support filling app fields on the runtime?

I am trying to build a app using the hangout API, starter app. Does the Hangouts API have support for data fields to be added on runtime?

For example,

a. If we need to add team members to our app
b. Or when we do 'Create Application' (https://appengine.google.com/)
c. 开发者_StackOverflow中文版When we enter AppEngine app ID to Gadget URL (https://code.google.com/apis/console/?api=plusHangouts)

Can we do the above using Python code and using the API (if there are any)?

As documented in Google APIs Console Help we don't let people programmatically register data into the APIs console.

Don't forget that that the current restrictions are because we are in a developer preview.