Having some free time on my hands I will take a look in the next few days. Looking for an alternative to GR and for something that tickles my interests.
Python, Search and literature. And open source.
e.g.
https://openlibrary.org/search.json?q=
https://openlibrary.org/books/OL28018730M.json
This is one of the best implementation decisions that Aaron Swartz, Anand Chitipothu, et al made when starting Open Library.