I'm creating a personal website and learning to implement a service worker that takes advantage of the push API in order to update myself and whatever others look at it that I have updated the website whenever I deploy. I figured out that the pushSubscription provides you with a capability URL and that I would need to store that somewhere in order to push a message to that url.
That's where my question comes in. Do I need a privacy policy if I'm going to be storing these capability URL in a database? If so, can I somehow only allow my website to store my capability URL instead of storing others?