Short description: A federated social media platform
Optional API documentation URL: https://github.com/friendica/friendica/wiki/Friendica-API
Friendica has structured information blocks on the profile pages, but they also have free-form bio. Either should work.
We might get away with using this API call: users/show? Not sure yet, I need to see what kind of data it returns. Do you happen to have a test account?