If I think of automated writing support service, the following examples come to my mind:

  • Microsoft Word with some proprietary engine
  • Open Source engine from Open Office, Hunspell
  • Commerical online service with a free Firefox plugin Grammarly

Is there a solution with a RESTful API?


2 Answers 2


As I typed in this question, many thoughts followed by more googling came to my mind, and after a half an hour or so I think I have found it.


Side note: also Language Tool offers a free Firefox plugin.

Still, maybe this insight could help someone to save time, therefore hope it's okay to retain this question and answer.

  • You are encouraged to accept your own answer, because doing so will help others in future. Thanks for that URL, btw :-) Oct 12, 2018 at 10:52

If you are looking for a free tool, the easiest grammar checking API that I found with a RESTful API is Grammar Bot:


It's under active development, which most of the free grammar checkers are not.

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