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LanguageTool

Style and Grammar Checker for 25+ Languages

Text AnalysisAuth: NoneHTTPS: YesCORS: unknownStatus: alive

Last verified: November 12, 2026

Reliability

100% uptime: the documentation responded in 5 of 5 checks over the last 30 days. Median response time: 198 ms.

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At a glance

# Get a list of supported languages. curl "https://api.languagetoolplus.com/v2/languages"

API reference

From LanguageTool's OpenAPI specification (version 1.1.2), spec updated March 6, 2023, via APIs.guru.

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 .
  • Base URL: https://api.languagetoolplus.com/v2
  • Endpoints: 5
  • Machine-readable spec: OpenAPI JSON (import into Postman, Insomnia or a code generator)
MethodPathWhat it does
POST/checkCheck a text
GET/languagesGet a list of supported languages.
GET/wordsList words in dictionaries
POST/words/addAdd word to a dictionary
POST/words/deleteRemove word from a dictionary

History

  • November 12, 2026: last health check, responding
  • November 2, 2026: Added to the directory (imported from marcelscruz)

See every change to the directory →

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