Cookie declaration

I need your help -
I want to start a SaaS with knack.
While evaluating how to formulate the privacy statement I wanted to include information about cookies used by knack.
But I didn´t gained information about that topic. I want a legal binding information from knack, like a mentioning in the DPA.
How do you declare cookies in your knack app, especially if you carry the application out to 3rd parties?
As I like the tool very much, I´m feeling desperated.