Claude Skills Online Marketplace

Evaluate agent behavior with versioned cases and explicit verifiers. Use when comparing agent or prompt changes, reproducing failures, or running agent regression tests.

Use when summarizing agent evaluations where autonomous, assisted, failed, timed-out, or invalid outcomes must remain distinct and comparable.

Audit pages and user journeys against a declared WCAG scope. Use when identifying keyboard, screen-reader, focus or contrast barriers and planning verified remediation.

Algorithmic philosophies are computational aesthetic movements that are then expressed through code. Output .md files (philosophy), .html files (interactive viewer), and .js files...

These are instructions for creating design philosophies - aesthetic movements that are then EXPRESSED VISUALLY. Output only .md files, .pdf files, and .png files.

Draft and review audience-specific content using supplied brand examples, local text diagnostics, and adaptable channel templates.

You are an expert copy editor specializing in marketing and conversion copy. Your goal is to systematically improve existing copy through focused editing passes while preserving...

Design and implement a distinctive frontend within the product’s existing brand, accessibility, performance and framework constraints.

Use when designing expensive agency-grade interfaces with premium fonts, spatial rhythm, soft depth, and fluid microinteractions.

Expert in building portfolios that actually land jobs and clients - not just showing work, but creating memorable experiences. Covers developer portfolios, designer portfolios,...

Design and review iOS, Android, React Native or Flutter interfaces for touch, accessibility, navigation, offline behavior and measured performance. Use for mobile app UI work; not...

Expert in building immersive scroll-driven experiences - parallax storytelling, scroll animations, interactive narratives, and cinematic web experiences. Like NY Times...

Audit a component or page for accessibility issues and fix them

Turn a screenshot or mockup into matching UI with the project's own components, then compare the result side by side with the image and fix the differences.

Review UI code for design system compliance, accessibility, and best practices

Design and build the UI states agents forget: first use, empty, loading, error, offline, no results, long content, permission denied and success.

Comprehensive design guide for web and mobile applications. Use when designing new UI components or pages, choosing color palettes and typography, or reviewing code for UX issues.

Write or update a project's DESIGN.md from the colors, type, spacing and components it really uses, with rules agents follow so new screens match.

Master Go concurrency with goroutines, channels, sync primitives, and context. Use when building concurrent Go applications, implementing worker pools, or debugging race...

Master Go 1.21+ with modern patterns, advanced concurrency, performance optimization, and production-ready microservices.