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Found 9,213 Skills
Elite Application Security engineer specializing in secure SDLC, OWASP Top 10 2025, SAST/DAST/SCA integration, threat modeling (STRIDE), and vulnerability remediation. Expert in security testing, cryptography, authentication patterns, and DevSecOps automation. Use when securing applications, implementing security controls, or conducting security assessments.
Use when designing iOS interfaces, implementing accessibility (VoiceOver, Dynamic Type), handling dark mode, ensuring adequate touch targets, providing animation/haptic feedback, or requesting user permissions. Apple Human Interface Guidelines for iOS compliance.
Set up Biome (default) or ESLint + Prettier, Vitest testing, and pre-commit hooks for any JavaScript/TypeScript project. Uses Bun as the package manager. Use this skill when initializing code quality tooling for a new project or adding linting to an existing one.
Guide for building modern, accessible, and composable UI components. Use when building new components, implementing accessibility, creating composable APIs, setting up design tokens, publishing to npm/registry, or writing component documentation.
Build cross-platform mobile applications using React Native. Use when the user wants to create, develop, or work with React Native apps for iOS and Android. Triggers include requests to build mobile apps, create React Native components, set up navigation, integrate native modules, handle app state management, implement animations, or work with React Native specific features like FlatList, StyleSheet, or platform-specific code.
Comprehensive guidelines for responsive web design including mobile-first approach, flexible layouts, media queries, and cross-device optimization
High-performance structured JSON logging for Node.js. Use when building production APIs that need fast, structured logs for observability platforms (Datadog, ELK, CloudWatch). Provides request logging middleware, child loggers for context, and sensitive data redaction. Choose Pino over console.log for any production TypeScript backend.
You are a security expert specializing in dependency vulnerability analysis, SBOM generation, and supply chain security. Scan project dependencies across ecosystems to identify vulnerabilities, assess risks, and recommend remediation.
Security review and guidance for iOS, macOS, and watchOS apps. Covers secure storage, biometric authentication, network security, and platform-specific patterns. Use when implementing security features or reviewing code for vulnerabilities.
Design responsive layouts with breakpoints, mobile-first approach, and flexible grids. Use when creating responsive designs, implementing breakpoints, or optimizing for multiple screen sizes.
Write Tampermonkey userscripts for browser automation, page modification, and web enhancement. Use when: creating browser scripts, writing greasemonkey scripts, automating user interactions, injecting CSS or JavaScript into web pages, modifying website behaviour, building browser extensions, hiding unwanted page elements, adding form auto-fill, scraping website data, intercepting requests, detecting URL changes in SPAs, or storing persistent user preferences. Covers userscript headers (@match, @grant, @require), synchronous and async GM_* API functions, common patterns (DOM mutation, URL change detection, element waiting), security sandboxing, and cross-browser compatibility (Chrome, Firefox, Edge).
Analyzes events through physics lens using fundamental laws (thermodynamics, conservation, relativity), quantitative modeling, systems dynamics, and energy principles to understand causation, constraints, and feasibility. Provides insights on energy systems, physical limits, technological feasibility, and complex systems behavior. Use when: Energy decisions, technology assessment, systems analysis, physical constraints, feasibility evaluation. Evaluates: Energy flows, conservation laws, efficiency limits, physical feasibility, scaling behavior, emergent properties.