Skill Claude CodeCodex
Find the root cause before changing code. Use when encountering any bug, test failure, crash, flaky test, performance regression, or unexpected behavior, before proposing or applying a fix.
Skill Claude CodeCodex
Get screen typography correct — the details models reliably get wrong: curly quotes, en/em dashes, real ellipses, line length, line-height, hierarchy, and the JSX entity trap. Use whenever generating or reviewing HTML/CSS/React with visible text (landing pages, components, docs, dashboards) — apply the rules…
Skill Claude CodeCodex
Make web UI actually usable and accessible — keyboard/focus, interaction and loading states, forms, navigation, and motion. Use when building or reviewing any interactive surface (forms, modals, menus, tables, flows) for usability, accessibility (WCAG), interaction states, or the "it looks fine but feels janky / fails…
Skill Claude CodeCodex
Require fresh verification evidence before claiming work is done, fixed, or passing. Use before reporting completion, expressing success, committing, or opening a PR — run the command, read the output, then make the claim.
Skill Claude CodeCodex
Build agent-friendly web apps with the W3C Web Model Context API (WebMCP). Use when exposing frontend features as structured tools for in-browser AI agents, adding document.modelContext tools to React/Next.js apps, designing tool schemas for dashboards or admin UIs, or making existing UI automatable without DOM…
Skill Claude CodeCodex
Safely change untested code: seams, characterization tests, sprout/wrap, and the legacy change algorithm. Use when a RonyKit module lacks tests, you are afraid to touch existing behavior, or you need a safety net before refactoring. Pair with go-testing for repo integration and app unit tests.
Skill Claude CodeCodex
Write a concrete implementation plan before touching code on a multi-step task. Use when you have a spec or requirements and the work spans several files or steps — decompose into small, independently testable tasks first.
Skill Claude CodeCodex
Language-agnostic discipline for writing valuable tests and practicing TDD. Use when deciding what to test, structuring a test suite, doing red-green- refactor, or judging whether coverage is meaningful rather than vanity.
Settings file Claude Code
Agent settings configuring $schema, permissions.