Worked on the w3ctag/design-principles repository to refactor and enhance the User-Centric API Design Principles documentation. Focused on aligning API behavior with user intent, the work emphasized predictability and reduced cognitive load for API consumers. Leveraging skills in API design principles and technical writing, the developer adopted a documentation-first approach, replacing consent-based prompts with intent-driven guidance. This shift established a foundation for proactive design decisions in future features. Using HTML for documentation structure, the changes improved clarity and consistency, supporting both internal alignment and external usability. No bugs were fixed during this period, with efforts concentrated on feature development and documentation quality.