Anyone have experience with puppeter and similar automation software?
 

There is still some ad networks which dont offer API access for campaign management, which means you always need to create and pause campaigns manually which can be tedious process. So thinking about solving this issue by using browser automation software, where certain actions would be done over XML/JS/PHP call. Any ideas ?

Simple Python scripts could execute the tasks. For each network, create a script that uses soup to login (save those cookies for future use!), navigate to whatever screen you want and performs the action.

I've done it in the past for a few networks.

I'm surprised there's ad networks that don't have an API. Detecting automation of chrome thru puppeteer/webdriver can be done so make sure the ad network doesn't mind before building your app. An extension or bookmarklet may be easier or more suitable for your use case.