Install helper scripts?
Cookie extra permissions

Safari data access

Cookie needs extra permission to access Safari data.It's super simple:

Authorize Cookie
Install Cookie Scripts

Helper scripts

Extended Safari support

For improved History removal, you can optionally give Cookie access to data which is outside of its sandbox.

Simply download Safari_Script.dmg (or for Safari Technology Preview Tech_Preview_Script.dmg), double-click to open, and drop the contained script into your user Application Scripts folder:

~/Library/Application Scripts/com.sweetpproductions.CookieApp/

Nice and Easy :)