API call

My supervisor wants me to take screenshots of historical data for our (maybe 20) sites. We do have a paid account.

He wants:

Monthly traffic to each site for as far back as we can go.
Most visited pages list.
Most popular keywords.
Average time on site.
Pageviews/visit.

An API call sounds a whole lot easier and more time efficient--but how do I compose and use it?

Your advice is much appreciated.

the api is very good
https://secure.getclicky.com/user/#/help/api

its very simple you need to run something like this
visitor count
http://api.getclicky.com/api/stats/4?site_id=XXX&sitekey=XXX&type=visitors&date=this-month&output=json
best pages
http://api.getclicky.com/api/stats/4?site_id=xxx&sitekey=xxx&type=pages&date=this-month&output=json
searches
http://api.getclicky.com/api/stats/4?site_id=xxx&sitekey=xxx&type=searches-keywords&date=this-month&output=json

and then use PHP or another language to read and display - or even produce as a pdf.

I dont work for getclicky, but can do php code for a fee.