Worked on the informalsystems/quint repository to deliver Claude Code skills for the Quint language, focusing on plugin installation and comprehensive modeling documentation. The approach included updating the main README and adding a detailed Quint modeling reference to streamline onboarding and improve modeling accuracy. By documenting sum types for phases, the work enhanced clarity and consistency in phase-based modeling workflows. Leveraging skills in Claude Code, Quint, and technical writing, the developer standardized tooling and improved maintainability for the project. The contributions addressed the need for clearer documentation and more accessible modeling resources, supporting both new and experienced users of the Quint language.