Slighty OT but,
Apart from the fact that it looks and feels like 2006 (that latex renderer is so, so horrible, it's a distraction), and that you can't copy anything meaningful out of it, Mathworld is great. But honestly, as of 2020, I would have thought we'd have much better tools to learn a domain as thoroughly defined as mathematics (interactive, intuitive, etc etc etc). As it stands, it's still really hard without a teacher, but it shouldn't: a rich web experience with text as a basis should be able to produce at least as good understanding as a video (whose only major difference is voice).
I'd expect to be able to hover over anything and get a tooltip definition, be able to move things in equations and sliders for constants to see real-time graphs or limits or edge cases etc; with formulas that self-update in real time.
I mean, it's a poor state of affairs that the combined body of mathematicians on Earth still haven't come up together to find a way to explain and teach mathematics at least as well as a freaking catalog website can show and sell products. It's not that hard to leverage decent frontends...
I love your efforts because I think they're truly headed in the right direction; we need so many more of these tools, innovation on the way to building an actual "base of mathematical knowledge" that's not Wikipedia (too general) nor Matlab (too specific) nor YouTube (good thing but not enough).
Back on topic:
- are you considering a public-facing API?
- I think "discover" (in your title) is misleading and explains some slightly harsh reactions here (failing to honor a promise is really bad marketing). I'd suggest something more like "pro tools for pro math", I mean make the promise that it's a tool for people who already know these things, who don't "discover" but rather "reference", "recall", sort of a modern lookup table. Like, say I've forgotten formula or theorem X, I'd really value being able to get that info as fast as possible.