LanguageTool API


Check texts for style and grammar issues with LanguageTool. Please consider the following default limitations:
  • your daily request limit depending on your plan
  • maximum number of requests per minute: 20 (free) / 80 (Premium)
  • maximum number of characters per minute: 75,000 (free) / 300,000 (Premium)
  • maximum number of characters per request: 20,000 (free) / 60,000 (Premium)
  • for the free version, also consider the limitations documented here
  • Note: any parameters or outputs not part of this documentation are internal and must not be relied on
Need more generous limits? Just contact us.

Use this page to mock LanguageTool API in your testing and development.

Run our mock API sample using the open source WireMock library, or in the free edition of WireMock Cloud. You'll have a working API server simulating the behavior of LanguageTool API, which will allow you to keep building and testing even if the actual API you isn't currently available.

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