Adversarially review a code change — assume it's broken, try to break it, and only report findings that survive an independent refutation pass. Use when the user wants a deep, skeptical review of a diff, PR, or branch ("adversarial review", "try to break this", "find what's wrong before I ship", "review this like a skeptic", "what will break in production"). Scales from a single inline pass to a multi-agent fan-out (one skeptic per domain → adversarial verify → synthesis). Distinct from a normal code review: it leads with concrete failure scenarios over style, distrusts the tests, and is honest about what it could not verify.
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When the user wants to set up, improve, or audit analytics tracking and measurement. Also use when the user mentions "set up tracking," "GA4," "Google Analytics," "conversion tracking," "event tracking," "UTM parameters," "tag manager," "GTM," "analytics implementation," or "tracking plan." For A/B test measurement, see ab-test-setup.
Anime.js adapter patterns for HyperFrames. Use when writing Anime.js animations or timelines inside HyperFrames compositions, registering animations on window.__hfAnime, making Anime.js seek-driven and deterministic, or translating Anime.js examples into render-safe HyperFrames HTML.
Apple's approach to interface design and fluid, physical motion, translated for the web. Use when building or reviewing gesture-driven UI, spring animations, drag/swipe/sheet interactions, momentum and interruptible transitions, translucent materials and depth, typography (optical sizing, tracking, leading), reduced-motion, or the design foundations (feedback, spatial consistency, restraint) behind Apple-style interfaces.
Use when building App Store screenshot pages, generating exportable marketing screenshots for iOS apps, or creating programmatic screenshot generators with Next.js. Triggers on app store, screenshots, marketing assets, html-to-image, phone mockup.
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Create React loading, processing, selected, current, focus, and pressed states with the border-beam package's animated edge glow. Use when a card, button, input, tab, option, task panel, or agent surface needs a restrained traveling or breathing beam; includes installation, imports, prop selection, state wiring, reduced motion, accessibility, and performance and layout guardrails.
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Accessibility engineering for product interfaces, from focus states and keyboard support to ARIA, forms, and screen readers. Use when building or reviewing UI components, modals, menus, forms, custom widgets, or when the user says "make this accessible" or reports keyboard or screen-reader issues. Triggers on accessibility, a11y, WCAG, aria, focus ring, focus-visible, focus trap, keyboard navigation, tab order, tabindex, screen reader, sr-only, aria-live, alt text, hit area, touch target, pointer-events, hover on touch, prefers-reduced-motion, autoplay, toast duration, skip link, semantic HTML, aria-label, form errors, disabled buttons, "not keyboard accessible".
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Color systems for digital products, from building and naming a palette to applying it with meaning and verifying contrast. Use when creating or extending a color palette, naming color tokens, theming light and dark appearances, auditing the colors in a codebase, or reviewing frontend code for color. Triggers on color palette, palette generation, color scale, color ramp, brand color, accent color, neutral palette, gray palette, status colors, design tokens, semantic color tokens, token naming, theming, dark mode colors, contrast ratio, APCA, gamut, display p3, oklch, color conversion, gradients, color meaning, increased contrast.
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Cross-discipline interface review: routes a screen, flow, feature, or product interface to every `better-*` domain skill and consolidates one ranked verdict. Use when asked for a holistic review rather than a single domain, and when `interface-review` hands up a change to route. Triggers on better-interface, holistic interface review, review the whole screen.
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Layout structure for web interfaces, from grouping and alignment to reading order, progressive disclosure, and adaptive breakpoints. Use when structuring a page or component, spacing or aligning controls, deciding what collapses at small sizes, handling RTL layout direction, or reviewing frontend code for layout. Triggers on layout, spacing, alignment, grouping, negative space, whitespace, visual hierarchy, reading order, progressive disclosure, breakpoints, responsive layout, container queries, safe area, full-bleed, edge-to-edge, layout margins, RTL layout, logical properties.
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Web typography from choosing fonts to spacing, wrapping and accessibility. Use when picking or pairing typefaces, configuring variable fonts or OpenType features, setting up a type scale, checking heading hierarchy, styling text in components, truncating text, styling underlines, selection, placeholders or carets, or reviewing frontend code for typography. Triggers on typography, fonts, font formats, woff2, variable fonts, font-weight, opentype, font-feature-settings, letter-spacing, line-height, type scale, heading hierarchy, heading levels, tabular numbers, text-wrap, truncation, line clamp, underlines, text-decoration, text selection, iOS input zoom, scaled input text, font smoothing, text contrast, measure, line length, text-box, smart punctuation, drop cap.
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UX writing and interface copy, from voice and button labels to error messages and empty states. Use when writing or reviewing any user-facing text: button and link labels, form errors, placeholders, settings labels, onboarding flows, notifications, or empty states. Triggers on UX writing, microcopy, interface copy, product copy, copywriting, button labels, link text, error messages, empty states, placeholder text, settings labels, capitalization, title case, sentence case, voice and tone.
20 projects use a version of this
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When the user wants to create competitor comparison or alternative pages for SEO and sales enablement. Also use when the user mentions 'alternative page,' 'vs page,' 'competitor comparison,' 'comparison page,' '[Product] vs [Product],' '[Product] alternative,' or 'competitive landing pages.' Covers four formats: singular alternative, plural alternatives, you vs competitor, and competitor vs competitor. Emphasizes deep research, modular content architecture, and varied section types beyond feature tables.
Use when building or optimizing a local-first desktop app with React, dealing with excessive re-renders during navigation, slow chat/list UIs with streaming content, or profiling a Tauri app without native Chrome DevTools access.
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Add vertical container-size guide lines with mini corner squares for precise, structured web layouts. Use when asked for container lines, measured layout guides, vertical boundary lines, editorial grid markers, or small corner-square frame details.
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When the user wants to plan a content strategy, decide what content to create, or figure out what topics to cover. Also use when the user mentions "content strategy," "what should I write about," "content ideas," "blog strategy," "topic clusters," or "content planning." For writing individual pieces, see copywriting. For SEO-specific audits, see seo-audit.
Author a new HyperFrames registry block (caption style, VFX block, transition, lower third) or component (text effect, overlay, snippet) and ship it as an upstream PR to the hyperframes repo. Use ONLY when the user wants to CONTRIBUTE to the public catalog — for in-project caption/transition authoring use the `hyperframes` skill, for installing existing registry items use the `hyperframes-registry` skill.
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When the user wants to edit, review, or improve existing marketing copy. Also use when the user mentions 'edit this copy,' 'review my copy,' 'copy feedback,' 'proofread,' 'polish this,' 'make this better,' or 'copy sweep.' This skill provides a systematic approach to editing marketing copy through multiple focused passes.
A folder with a SKILL.md file: a name, a description of when to use it, and instructions. Claude loads a skill only when the task matches its description.
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Copy the folder into your project's .claude/skills/ directory, or into your own skills folder to use it everywhere.
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