AI Grammar Check API — Fix Grammar, Spelling, and Punctuation Errors
Check and correct grammar, spelling, and punctuation errors in any text. AI-powered grammar checking with contextual suggestions. Free API.
What is AI Grammar Checking?
AI grammar checking goes beyond simple spell-check by understanding context. The API detects and corrects grammar errors, spelling mistakes, punctuation issues, subject-verb agreement problems, tense inconsistencies, and awkward phrasing. Powered by Llama 3.3 70B running on Cloudflare Workers AI.
How to Use It
Call GET /api/v1/ai-grammar?text=He+go+to+store+yesterday. Returns { original: string, corrected: string, errors_found: number, changes: string[] }.
Try it live
Test this endpoint in the interactive console
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Frequently Asked Questions
Does it check multiple languages?
The primary language is English. Some multilingual support is available through the underlying model, but English grammar checking is most reliable.