Skill UI

This skill provides a practical guide for comprehensive accessibility validation of web applications. It helps users test compatibility with various screen readers, validate ARIA implementations, and debug issues related to assistive technologies. Ideal for ensuring that web forms, dynamic content, and navigation are fully usable by people with disabilities.

Coordinate multi-layer security scanning and hardening across application, infrastructure, and compliance controls using defense-in-depth strategy. Orchestrates specialized security agents for comprehensive assessments, layered controls, and continuous monitoring. Follows DevSecOps principles with shift-left security, automated scanning, and compliance validation to create a resilient security posture addressing vulnerabilities and future threats.

Generates production-grade Selenium WebDriver automation scripts and tests in Java, Python, JavaScript, C#, Ruby, or PHP. Supports local execution and TestMu AI cloud with 3000+ browser/OS combinations for robust cross-browser validation and CI/CD integration.

This skill creates custom Semgrep rules for detecting security vulnerabilities, bug patterns, and code patterns. It guides users through a strict workflow including test-first development, AST analysis, and validation. Ideal for building static analysis detections, enforcing coding standards, and identifying data flow issues using taint mode.

Creates language-specific variants of existing Semgrep rules. Use when porting a rule to target languages, with applicability analysis and test-driven validation for each language.

SkillCheck validates SKILL.md files against the agentskills specification and Anthropic best practices. It performs read-only checks on structure, semantics, naming, and quality to catch errors before publishing. The tool provides a score, grade, and detailed report with fix suggestions for critical issues to ensure high-quality skill authoring.

Guide for creating and updating AI agent skills with emphasis on Azure SDKs and Microsoft Foundry. Provides structured workflow, safety requirements, and validation guidelines for effective skill development.

This skill provides a comprehensive, structured workflow for diagnosing performance bottlenecks in SwiftUI applications. It guides users through a code-first review to detect common issues like invalidation storms, layout thrash, or heavy main-thread work. When code review is insufficient, it provides detailed guidance on collecting runtime evidence using Instruments, enabling precise root cause analysis and targeted remediation strategies.

This skill provides expertise in TanStack Query (React Query), a powerful tool for asynchronous state management in modern React and Next.js applications. It covers advanced patterns like data fetching, cache invalidation, optimistic updates, and handling SSR hydration, ensuring highly performant and reliable data layers.

Proactive threat hunting and detection engineering using Sigma/YARA rules, SIEM queries, and ATT&CK mapping for blue-team operations. Includes hypothesis-driven workflows, rule validation, and toolchain guidance.

Implement stable and scalable directional shadow systems for Three.js applications. This skill covers large procedural worlds, city scenes, and terrain rendering with moving cameras. It includes techniques like WebGPU/TSL shadow nodes, cascades, cached clipmaps, texel stabilization, update budgets, and targeted invalidation to ensure performance.

This skill validates Three.js graphics implementations using fixed-view visual contracts and diagnostics. It ensures reproducibility through seed sweeps, camera-scale tests, and temporal stability checks. It captures no-post baselines and GPU budgets to prevent regression in procedural scenes, evaluating the rendering mechanism rather than subjective screenshots.