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Found 3,726 Skills
Expert in web accessibility (WCAG 2.1 AA compliance) for React/Next.js applications, ensuring all projects are usable by everyone
Unit tests for @ExceptionHandler and @ControllerAdvice for global exception handling. Use when validating error response formatting and HTTP status codes.
Expert in strict POSIX sh scripting for maximum portability across Unix-like systems. Specializes in shell scripts that run on any POSIX-compliant shell (dash, ash, sh, bash --posix).
You must use this when selecting statistical tests, interpreting effect sizes, or conducting power analysis.
Creates custom React hooks for common patterns including data fetching, forms, authentication, local storage, debounce, and more. Use when users request "create custom hook", "React hook for", "useX hook", or "reusable hook".
Web fuzzing with ffuf
Quick reference for n8n patterns. Full docs /AGENTS.md
Check which exchanges work from your location and search for tokens with trading rules (min order size, price increment, order types).
Build and test Polymarket prediction market trading strategies for YES/NO token trading. Provides 6 tools: get_all_prediction_events (browse markets, $0.001), get_prediction_market_data (analyze price history, $0.001), create_prediction_market_strategy (generate code, $1-$4.50), run_prediction_market_backtest (test performance, $0.001). Trade on real-world events (politics, economics, sports, crypto). Currently simulation only (live deployment coming soon).
Security engineering that protects applications, data, and users from real-world threatsUse when "security, authentication, authorization, encryption, OWASP, vulnerability, XSS, SQL injection, CSRF, secrets, password, JWT, OAuth, permissions, audit, compliance, security, authentication, authorization, encryption, vulnerabilities, OWASP, compliance, audit" mentioned.
Use when writing Playwright automation code, building web scrapers, or creating E2E tests - provides best practices for selector strategies, waiting patterns, and robust automation that minimizes flakiness
Use after solution concepts exist to surface and prioritize assumptions behind outcomes, opportunities, or solution ideas and design experiments to test them.