Review code changes and test them: correctness, security-sensitive paths, AI-generated code scrutiny, regression tests and verification discipline. Use when reviewing a diff or PR or when remediation needs tests.
Review third-party agent skills, rules and scripts before adoption: provenance, licence, hidden instructions, exfiltration, downloads and excessive permissions. Use before installing or copying any external SKILL.md, plugin or agent rule.
Implement and verify accessibility and responsive behaviour: focus and hover states, skip links, mobile navigation, sticky headers, image alt text, colour contrast and mobile layouts. Use when building or reviewing UI components and pages.
Handle privacy and consent interfaces: cookie banner and preferences, UTM tracking, analytics configuration, privacy policy and terms drafting based on actual behaviour. Use when a site uses cookies, trackers, analytics or collects personal data.
Build and review forms: password visibility toggle, success and error states, confirmation dialogs, validation, and spam protection. Use when creating or auditing any user input form.
Implement optional site interactions: dark mode, site search, back-to-top, loading and skeleton states, scroll progress, copy-to-clipboard, print stylesheet, expandable FAQ and floating contact action. Use only when the feature fits the product's actual needs.
Measure and improve page-load performance: Core Web Vitals, bundle size, image compression, caching and font loading. Use when pages are slow, before launch, or when adding heavy assets or scripts.
Run a pre-launch production-readiness review: HTTPS, custom 404, broken links, primary call to action, deployment checks and rollback planning, mapping every launch checklist item to a responsible skill. Use before releasing or handing over a website or web…