How to get Google Apps marketplace notification

Question

I\'ve created a new marketplace app and installed it on my domain. I\'m trying to use the appsmarket api to get a list of domains which installed my app, with the following

Answer 1

Try this:

It's surprisingly hidden. 
Visit code.google.com/apis/console. 
First, make sure the service you want is enabled under "Services". 
Then go to "API Access" and specify your calling domains or IP addresses.

From the comments of the link you gave above