Agent Skill that teaches Cursor & Claude Code to output single-file HTML for spatial, parallel, comparable, or interactive content. 9 categories, 20 patterns, 12 ready-to-use templates. Inspired by Thariq Shihipar's 'unreasonable effectiveness of HTML'.
Skill Claude CodeCodex
A guide for exploring several implementation or visual-design options before choosing one. It also covers writing an engineering plan, such as an RFC, which records how a chosen solution will be built.
Skill Claude CodeCodex
A set of HTML-based formats for reviewing code changes, writing pull-request descriptions, and showing how unfamiliar modules and call paths fit together.
Skill Claude CodeCodex
A guide for documenting a design system, meaning the shared visual rules and reusable interface parts of a product. It also explains how to display every version of a component, such as a button or card, together for review.
Skill Claude CodeCodex
A guide for testing motion and short interaction flows in a web interface. It covers adjustable animation timing and easing, which controls how movement speeds up or slows down, plus clickable flows across four to six screens.
Skill Claude CodeCodex
A guide for creating illustrations and diagrams directly in a web page with inline SVG, a built-in format for scalable vector graphics. It covers document illustrations, flowcharts, state machines, and deployment pipelines.
Skill Claude CodeCodex
A format for small, single-file HTML slide decks that advance with the keyboard. HTML is the language used to structure web pages.
Skill Claude CodeCodex
A guide for explaining how a feature works in a code repository or how an abstract technical idea works. It can structure the explanation with a summary, expandable steps, code views, questions and answers, or an interactive visual.
Skill Claude CodeCodex
A set of HTML formats for recurring engineering documents, including weekly status reports and incident postmortems. A postmortem records what happened, why, what it affected, and what will change.
Skill Claude CodeCodex
Guidance for building small HTML editors where users arrange items, change settings, or tune prompts, then copy the result back to an agent.
Skill Claude CodeCodex
A routing guide for deciding when a single HTML page is more useful than plain text, such as for comparisons, diagrams, reports, or interactive editors.