Public HTTP Proofreading API

We offer a simple HTTPS REST-style service that anybody can use to check texts with LanguageTool. The only public endpoint is the following one - do not send your requests to any other endpoints you might find in the homepage’s HTML code or elsewhere:

Example usage:

curl -d "text=This is an test." -d "language=auto"

When using it, please keep the following rules in mind:

API documentation

See the JSON API.

Libraries to simplify usage