/API TERMS
API Terms/Media & Content/LanguageTool API

LanguageTool API

languagetool.org

Checks texts for grammar, spelling, punctuation, and style issues across multiple languages.

The LanguageTool API API uses api key authentication; has freemium pricing. Verified 2026-07-12 with per-field source links.

Media & Content Verified 2026-07-12 low confidence
Base URL
not documented null
no source
Auth
api_key
unevidenced
Free tier
not documented null
no source
Pricing model
freemium
languagetool.org ↗
Pricing
Free basic version (2,000 characters per text field); Premium subscription available monthly/quarterly/annually with 150,000 characters and additional checks (exact prices displayed dynamically)
languagetool.org ↗
Rate limits
not documented null
no source
OpenAPI spec
https://api.apis.guru/v2/specs/languagetool.org/1.1.2/swagger.json
unevidenced
MCP server
not documented null
no source