Fixkey is an advanced tool tailored for macOS users, designed to enhance writing quality by detecting and correcting typographical errors using artificial intelligence. It offers the flexibility for users to insert custom prompts and correct grammar with a single keystroke, whether for a line or an entire paragraph. This tool provides customizable shortcuts for easy activation and is optimized for macOS, ensuring lightweight and efficient performance. With support for over 200 languages using Llms and ongoing testing of dictation with offline Whisper models, Fixkey aims to cater to diverse linguistic needs. Officially compatible with more than 300 applications, Fixkey utilizes offline models fine-tuned for grammar correction, receiving positive reviews for its speed and usability across different text fields. It aims to universally enhance the typing experience across macOS applications.