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Found 2,140 Skills
Guides Python SDK development in Apache Beam, including environment setup, testing, building, and running pipelines. Use when working with Python code in sdks/python/.
Implement, review, or improve localization and internationalization in iOS/macOS apps — String Catalogs (.xcstrings), LocalizedStringKey, LocalizedStringResource, pluralization, FormatStyle for numbers/dates/measurements, right-to-left layout, Dynamic Type, and locale-aware formatting. Use when adding multi-language support, setting up String Catalogs, handling plural forms, formatting dates/numbers/currencies for different locales, testing localizations, or making UI work correctly in RTL languages like Arabic and Hebrew.
Senior End-to-End (E2E) Test Architect for 2026. Specialized in Playwright orchestration, visual regression testing, and high-performance CI/CD sharding. Expert in building resilient, auto-waiting test suites using the Page Object Model (POM), automated accessibility auditing (Axe-core), and deep-trace forensic debugging.
Design accessibility testing plans and test cases covering WCAG 2.1 standards, screen readers, and keyboard navigation. Default output is Markdown, with support for requesting Excel/CSV/JSON formats. Use for accessibility testing.
Utilize AI to assist in testing activities, including test data generation, defect root cause analysis, test prioritization, and intelligent test recommendation. The default output format is Markdown, and you can request Excel/CSV/JSON formats instead. This skill applies to AI-assisted testing scenarios.
WCAG 2.2 AA compliance expert specializing in audits, automated testing, screen reader validation, and remediation.
A/B testing infrastructure, feature flags (LaunchDarkly, Unleash), experimentation platforms, PLG patterns, and funnel optimization. Use when building experimentation systems, implementing feature toggles, or optimizing conversion funnels.
Build production-grade frontend interfaces with modern React, Tailwind CSS, and shadcn/ui. Five modes: scaffold projects, create components, configure themes and design tokens, refactor styles, and audit codebases. Encodes best practices for React 19 Server Components (framework-dependent), TailwindCSS v4 CSS-first config, shadcn/ui with Radix primitives, modern CSS (container queries, :has(), view transitions, scroll-driven animations), Monaspace typography, and Vite 6. Supersedes the frontend-design skill. Use when building, styling, theming, or improving any frontend project. NOT for backend APIs, database design, DevOps, testing frameworks, state management libraries, routing, or full SSR framework setup.
Reviews finished and in-progress digital products to assess adherence to design specifications and discover potential issues. Use when user says "design review", "design QA", "QA review", "check implementation", "visual bugs", "compare to design", "match the specs", "review the build", "before launch", "pre-launch review", "implementation review", "verify design", "design validation", "spacing issues", "visual discrepancies", "accessibility review", "WCAG compliance", or "responsive testing". Validates implementation against design intent, identifies visual and interaction discrepancies, and provides actionable feedback. Do NOT use when still designing concepts (use design-concepts), need to understand users (use design-research), or nothing has been built yet.
Marketing analytics specialist covering tracking setup, dashboards, reporting, attribution modeling, A/B testing and experiment design, conversion optimization, and data-driven decision making. Use when the user wants to set up analytics tracking, create dashboards, build reports, implement conversion tracking, design or set up A/B tests, calculate sample sizes, write test hypotheses, analyze campaign performance, set up attribution models, audit existing analytics, or make data-driven marketing decisions. Also triggers for GA4, Google Tag Manager, UTM parameters, conversion rates, marketing ROI, funnel analysis, cohort analysis, sample size calculation, ICE scoring, experiment roadmap, or any marketing measurement question.
Implement, review, or improve in-app purchases and subscriptions using StoreKit 2. Use when building paywalls with SubscriptionStoreView or ProductView, processing transactions with Product and Transaction APIs, verifying entitlements, handling purchase flows (consumable, non-consumable, auto-renewable), implementing offer codes or promotional/win-back/introductory offers, managing subscription status and renewal state, setting up StoreKit testing with configuration files, or integrating Family Sharing, Ask to Buy, refund handling, and billing retry logic.
Set up HelpMeTest proxy tunnels for local development testing. Use when user needs to test localhost, wants to substitute production URLs with local ports, or needs to route multiple services. Use when user says 'set up proxy', 'test localhost', 'tunnel to local', or before running tests against local development servers.