calculate the number of users into my audience???
Re: calculate the number of users into my audience???
I am not sure about the API here, but in Google Analytics you do have one User ID coverage report which can be extracted if you have implemented the analytics code and made some custom changes to it. More details around this report are here:- https://support.google.com/analytics/answer/3123670?hl=en
For AdWords API, there is a dedicated forum. This is the link: https://groups.google.com/forum/#!forum/adwords-api