Get 'Macro' data for hundresd of campaigns

Hi
I have dozens of accounts and I'm trying to find the best way to fetch the macro data for those campaigns. By Macro I mean for example the daily budget, countries, and so on. I came to that, that I have 750 accounts and for each account, I need to send a GET request to fetch the data, and it came to a lot of requests.. is there a better way?
Thanks