Smart Campaign types in Google are fully automated by Google Ads, and unfortunately no 3rd party tool will be able to edit or optimize them. Google Ads Smart Campaigns are designed for accounts and account managers that do not mind giving Google full control of their campaigns.
The main benefit of using PPCnerd Scripts is to experience the full benefits of Google Ads automation, while at the same time having as much control of those automations as possible. This means PPCnerd Scripts work only on standard campaign types within Google Ads.
If you are currently happy with the performance of your Google Ads Smart Campaigns, you can still use PPCnerd Scripts to automate the monitoring of campaign performance on a daily/weekly basis - and identifying performance trends quickly.