Nightly, I have OpenClaw pull the latest changes from a private GitHub repo that is my Obsidian notes vault. It then looks to see which new notes have been added and then runs a "create flashcard" skill to extract and author useful flashcards for spaced-repetition practice. I then gave it access to a custom web-based spaced-repetition flash card application that I built a few months ago. It uses an API to insert new cards, check to see when I last reviewed cards and optionally send me a nudge reminder if I haven't reviewed cards in a few days.
It is a nice workflow that has been working well. I go to class, take notes in Obsidian and check in my changes. By the next day, when I open my flashcard app on my phone, I have new cards to review from yesterday's class.