I was looking for something to find information about a Mastodon account and litterally stumbled onto https://browser.pub/
You can enter any fediverse account, a single post, and it quickly returns all bits of information via APIs, either nicely visually displayed, but also JSON.
Like all the data behind my Mastodon user name
https://browser.pub/cogdog@cosocial.ca
Or for.a single post
https://browser.pub/https://cosocial.ca/@cogdog/113912235087543369
Or a PixelFed post
https://browser.pub/https://pixelfed.social/p/cogdog/788282119757254370
There’s likely more, but being able to peek under the data hood this easy looks useful