https://github.com/languagetool-org/languagetool https://github.com/languagetool-org/languagetool is pretty good for grammar. It's quite trivial to work with th

https://github.com/languagetool-org/languagetool https://github.com/languagetool-org/languagetool is pretty good for grammar. It's quite trivial to work with the REST API, try one of the docker images.