Ask HN: Structured Math Content API

We are building a fully automated Math tutor but we always seem to be short on content. So I want to import data and augment the data to fit our internal tutoring structure.

I'm looking for a Math API or structured data that includes Math questions and correct + incorrect answers/options. It should be all structured by either curriculum or topics (Algebra, Functions, etc.)

I can find quite a lot of content but mostly it's long texts. And no Q&A (Quizzes). I believe most Math apps have such content but I don't know how to access/buy/license it quickly.

You can see our current content here: https://curriculum.amy.app And here you can see a revision course for fractions: https://learn.amy.app?inviteCode=62uis

Thank you HN