API access to Vivaldi bookmarks?

This might be a longshot, but is there a API to access my vivaldi bookmarks?
I want to create a script that automatically creates a copy of all websites in my bookmarks.
I know i can import the JSON file for the bookmarks, but as this is going to run in a docker container it wil be hard to manage a GUI.

Hope this made sense, my head haven't startet properly after christmas break 😅