Nice article.
I'd also highly recommend "How To Design A Good API and Why it Matters" video from Joshua Bloch (co-author of Java).
He digs much deeper, mostly at code level rather than JSON level but the same principles apply.
Even though this video is almost 20 years old, the topics are as significant today as they were back then.
https://www.youtube.com/watch?v=aAb7hSCtvGw