Frontend

Efficient Tailwind CSS patterns using inheritance and custom config

MySQL performance optimization guide for Spring Boot/JPA. Use when reviewing database code, discussing index design, query optimization, N+1 problems, JPA/Hibernate tuning, or analyzing EXPLAIN plans. Complements /mysql-performance and /optimize-query commands.

Expert CLI/TUI designer for building intuitive, user-friendly, and professional command-line interfaces. Focuses on UX patterns, help systems, progressive disclosure, and developer ergonomics.

Comprehensive ESLint agent for JavaScript/TypeScript code quality. Use when setting up ESLint, configuring linting rules, analyzing code for issues, fixing violations, or integrating ESLint into development workflows. Triggers on requests involving code quality, linting, static analysis, or ESLint configuration for JavaScript, TypeScript, React, or Node.js projects.

FedRAMP 20X modernization expert. Provides guidance on Key Security Indicators (KSIs), continuous monitoring automation, machine-readable policies, and the new automated authorization approach. Auto-syncs with official FedRAMP docs.

CRITICAL: Use this skill when creating/debugging React UI components, Radix UI, forms, modals, or drag & drop.AUTO-ACTIVATE when user mentions (FR/EN): - select, Select, SelectValue, SelectItem, Radix - modal, modale, dialog, Dialog, DialogContent - form, formulaire, validation, Zod, React Hook Form, shadcn - drag, drop, DnD, @dnd-kit, sortable, réordonner - UI bug, composant, component, affiche ID, shows ID, undefined - Button, Input, Label, Checkbox, Switch, Badge, Card - créer composant, create component, nouveau composantThis skill contains TESTED patterns for Radix UI Select (ID vs Name), Modal CRUD templates, Drag & Drop with @dnd-kit, Form validation with Zod + shadcn/ui Form.

Expert technical advisor with deep reasoning for architecture decisions, code analysis, and engineering guidance.

Enforces Zig coding conventions from the Zig Zero to Hero guide. Use when writing, reviewing, or refactoring Zig code. Applies naming conventions, error handling patterns, resource management, and module organization best practices.

Comprehensive security and code quality audit. Use for thorough security, vulnerability, and code quality analysis. Related: project-health-checker for quick diagnostic checks.

Review Claude Code plugin marketplace configurations against official best practices. Use when analyzing marketplace.json and plugin.json files for structural issues, common errors, path validation, and consistency with Anthropic's official format. Detects repository URL mismatches, incorrect source paths, and missing required fields.

Create complete Claude Code plugins with proper structure including skills, commands, agents, and hooks.Generates plugin manifests and directory structures for distribution.Use when: building plugins, creating plugin packages, distributing skills to marketplace.Activates for: "create plugin", "generate plugin", "new plugin", "plugin package", "make plugin"

Guide and tooling for creating Claude Skills. Use when creating new skills or to analyze, understand, evaluate, update, or modify existing skills. Features additional skills for Claude Code. Includes design, implementation, and delivery phases.

2025 SEO best practices for Next.js including Core Web Vitals (INP replaces FID), E-E-A-T signals, Schema markup, AI content guidelines, and technical SEO. Use when optimizing pages for search engines, implementing metadata, adding structured data, or improving page speed.

Svelte and SvelteKit development. Use when building Svelte components or SvelteKit applications.

TypeScript/JavaScript development expert. Activates when writing .ts, .tsx, .js, .jsx files, discussing React, Vue, Node.js, Express, Next.js, or modern JavaScript/TypeScript patterns. Provides type-safe code, modern ES2023+ features, and framework best practices.

Build accessible user interfaces with semantic HTML, keyboard navigation, ARIA attributes, and screen reader support. Use this skill when creating or modifying UI components, form elements, interactive widgets, or page layouts. When working on files like *.tsx, *.jsx, *.vue, *.svelte, or HTML templates. When adding alt text to images, labels to form inputs, implementing keyboard navigation, managing focus states, ensuring proper color contrast, using semantic HTML elements (nav, main, button), or adding ARIA attributes for complex components.

Pixel-perfect UI cloning from screenshots or reference pages. Use when users ask to replicate, clone, or recreate a UI from an image, screenshot, or reference website. Triggers on keywords like "复刻", "clone", "replicate", "recreate UI", "像素级还原", "照着这个做", or when a screenshot is provided with implementation intent.

Guide for using the Neural DSP Quad Cortex device library in MMD files. Use when the user mentions Quad Cortex, QC, Neural DSP guitar processor, or needs help with preset loading, scene switching, expression control, or stomp automation for the Quad Cortex.

Implement mobile-first responsive designs using fluid layouts, relative units, responsive images, and touch-friendly interfaces. Use this skill when creating layouts that adapt across screen sizes, implementing breakpoints, or optimizing for mobile and tablet devices. When working on responsive component layouts, Tailwind responsive utility classes (sm:, md:, lg:, xl:), CSS media queries and breakpoints, fluid typography with clamp() or viewport units, responsive images with srcset and sizes attributes, mobile navigation menus and hamburger patterns, touch target sizing for mobile devices, responsive grid and flexbox layouts, container queries for component-based responsiveness, or viewport meta tags and mobile optimization.

Guide for using the Eventide H90 Harmonizer device library in MMD files. Use when the user mentions Eventide H90, H90 effects processor, H90 reverb/delay/modulation, or needs help with H90 program changes, HotSwitches, bypass control, expression automation, or firmware workarounds.