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Expert-level JavaScript testing skill focused on writing high-quality tests that find bugs, serve as documentation, and prevent regressions. Advocates for property-based testing with fast-check and pr…
Use when you need to review, improve, or troubleshoot a Maven pom.xml file — including dependency management with BOMs, plugin configuration, version centralization, multi-module project structure, bu…
Frontend page development. This skill is used when a user needs to develop web applications, create UI components, implement interactive features, or optimize frontend performance.
date-fns patterns for TypeScript - formatting, parsing, manipulation, comparison, timezone handling, and internationalization
UI/UX design intelligence. 50 styles, 21 palettes, 50 font pairings, 20 charts, 8 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind). Actions: plan, build, create, design, …
Define valid component.yml metadata for Canvas components, including props, slots, and enums. Use when (1) Creating a new component, (2) Adding or modifying props, (3) Troubleshooting "not a valid cho…
Migration guide between Radix UI and Base UI primitives for shadcn/ui. Covers step-by-step migration, API transformations, and validation checklists.
Research a topic from the last 30 days. Also triggered by 'last30'. Sources: Reddit, X, YouTube, Hacker News, Polymarket, web. Become an expert and write copy-paste-ready prompts.
This skill should be used when the user asks to 'verify sources', 'check citations', 'fact-check footnotes', 'verify quotes', 'source check', 'are my cites real', 'check for hallucinated citations', o…
Use when you need to apply Java secure coding best practices — including validating untrusted inputs, defending against injection attacks with parameterized queries, minimizing attack surface via leas…
Optimize Core Web Vitals (LCP, INP, CLS) for better page experience and search ranking. Use when asked to "improve Core Web Vitals", "fix LCP", "reduce CLS", "optimize INP", "page experience optimizat…
Proactively apply when creating new features/components/pages or setting up frontend project structure. Triggers on FSD, feature slicing, frontend architecture, layer structure, module boundaries, sca…
UI/UX design intelligence. 50 styles, 21 palettes, 50 font pairings, 20 charts, 9 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind, shadcn/ui). Actions: plan, build, creat…
Fetch and render Drupal content in Canvas components with JSON:API and SWR patterns. Use when building content lists, integrating with SWR, or querying related entities. Covers JsonApiClient, DrupalJs…
Border utilities Tailwind CSS v4.1. Border (border-width, border-color, border-style, border-radius, rounded-*), Outline (outline-*, outline-offset), Ring (ring-*, ring-offset), Divide (divide-*).
Notion API for creating and managing pages, databases, and blocks.
PostgreSQL DBA and architect skill for Go Gin APIs. Covers schema design decisions, migration impact analysis, index strategy, query optimization, partitioning, connection pool sizing, and the Postgre…
Specialized skills for ASP.NET Core integration testing. Use this when you need to test Web API endpoints, HTTP requests/responses, middleware, and dependency injection. It covers WebApplicationFactor…
Type-safe i18n for Vue 3 Composition API
UI/UX design intelligence. 50 styles, 21 palettes, 50 font pairings, 20 charts, 9 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind, shadcn/ui). Actions: plan, build, creat…
Expert Mermaid diagram creation, validation, and rendering with dual-engine output (SVG/PNG/ASCII). Supports all 20+ diagram types including C4 architecture, AWS architecture-beta with service icons, …
Design Canvas-ready React components with slots and decomposition-first patterns. Use when (1) Designing a component's prop/slot structure, (2) A component is growing too large, (3) Deciding between p…
Generate breadboard circuit mockups and visual diagrams using HTML5 Canvas drawing techniques. Use when asked to create circuit layouts, visualize electronic component placements, draw breadboard diag…
Create distributable Python packages with proper project structure, setup.py/pyproject.toml, and publishing to PyPI. Use when packaging Python libraries, creating CLI tools, or distributing Python cod…