Worked on enhancing user documentation for the x1xhlol/system-prompts-and-models-of-ai-tools repository by developing a comprehensive System Prompts and AI Tools Models Guide. Focused on improving onboarding and maintainability, the update involved restructuring and expanding the README using Markdown to introduce new sections that clarify system prompts and models for AI tools. Applied technical writing and documentation skills to ensure the guide is accessible and informative for both users and contributors. No bug fixes were addressed during this period, as the primary contribution centered on documentation quality, aiming to streamline user guidance and support future development within the repository.