This API isn't for public use, just in terms of performance and suitability for your needs. If you tell me more about what API you'd like to have, I might make it for you. Any public tools useful to others are very appreciated!
Discussion
The full data from that endpoint is far more then what I want for basic high level stats. The fields at the top of the response are more than sufficient. (zaps, zap_amount, events, posts, pubkeys, relays, users, trusted_users).
I wrote a basic script and how-to here for people wanting to report data to a block clock that includes attribution in the output.
https://github.com/vicariousdrama/howto/blob/main/bitcoin/bctext-blockclock-nostrbandstats.md