Frontend

Guidelines for writing clean, professional code. Use when writing or modifying code, creating commits, or generating code comments. Ensures code is written for team consumption without conversation artifacts.

A zero-runtime CSS-in-JS preprocessor framework for React. Use this skill when working with Devup UI components, styling, theming, or build configuration. This skill covers component usage (Box, Flex, Grid, Text, Button, etc.), styling APIs (css, styled, globalCss, keyframes), theme configuration, and build plugin setup for Vite, Next.js, Webpack, and Rsbuild.

Guides users on modern async patterns including native async fn in traits, async closures, and avoiding async-trait when possible. Activates when users work with async code.

Create UI components and designs following Google Material Design 3 (Material You) guidelines. Use when building Material UI components, implementing Material theming, working with elevation, color systems, typography, motion, or creating Android/web interfaces with Material Design patterns.

WHEN: Code review, quality check, code smell detection, refactoring suggestionsWHAT: Complexity analysis + code smell list + severity-based issues + improvement suggestionsWHEN NOT: Next.js specific → nextjs-reviewer, Security → security-scanner, Performance → perf-analyzer

Guides creation of ChatGPT Apps with interactive widgets using OpenAI Apps SDK and MCP servers.Use when building ChatGPT custom apps with visual UI components, embedded widgets, or richinteractive experiences. Covers widget architecture, MCP server setup with FastMCP, responsemetadata, and Developer Mode configuration. NOT when building standard MCP servers withoutwidgets (use building-mcp-servers skill instead).

Guide for building applications on Cloudflare's edge platform. Use when implementing serverless functions (Workers), edge databases (D1), storage (R2, KV), real-time apps (Durable Objects), AI features (Workers AI, AI Gateway), static sites (Pages), or any edge computing solutions.

Comprehensive guide for implementing PrimeNG components in Angular projects. Use when building UI components with PrimeNG library, needing examples of forms, tables, dialogs, menus, charts, or any of the 100+ PrimeNG components. Includes patterns, best practices, and real-world use cases.

Node chain testing templates for quality agent. WorkflowBuilder patterns and tier-based testing. Use when: testing node chains, WorkflowBuilder patterns, tier-based testing, chain execution tests, simple/complex/full chain tiers.

Next.js 15 API route patterns, NextRequest, NextResponse, error handling, maxDuration configuration, authentication, request validation, server-side operations, route handlers, and API endpoint best practices. Use when creating API routes, handling requests, configuring timeouts, or building server-side endpoints.

Comprehensive implementation planning guidelines for Pantas Green Django projects.Use when: planning features, designing solutions, creating technical specs, writing implementation docs.Triggers: plan, implement, design, architecture, feature, spec, GRE-, jira, ticket, roadmap, proposal

Automated code validation for diff review, change hygiene, and red flag detection. Use when reviewing git diffs, PRs, or changed files for test disabling patterns, secrets, path portability issues, security flags, and large deletions. Supports Python, TypeScript, JavaScript, HTML, and CSS.

Refactor legacy Help patterns to the correct BaseHelp system. Use when converting files that use the old HELP object literal pattern (with severity "requirement", field, expected properties) to the correct pipeHelp pattern with SEVERITY constants. Applies to 635+ files in src/{array,string,map,object,mathematical}/*/constants/ that need migration.

CSS custom properties theme architecture for 4 themes (studio, earth, athlete, gradient) with data-theme attribute switching and theme-aware components. Use when implementing theme switching, defining color schemes, or creating theme-responsive UI elements.

Builds React applications with Mantine's 100+ components, hooks, and form library. Use when creating feature-rich UIs with built-in dark mode, accessibility, and TypeScript support.

Use when educators need to validate if their lesson plan covers all 3 Delegation subcategories (Problem/Platform/Task Awareness).Analyzes lesson plans and provides objective scores (0-10) with actionable feedback.Works in Claude.ai, Claude Code, and API for maximum portability.

Adds reactive and declarative behavior to HTML with minimal JavaScript using Alpine.js directives. Use when adding lightweight interactivity to server-rendered pages, building interactive components without a build step, or when user mentions Alpine.js, x-data, or Tailwind-style reactivity.

Svelte 5 - Reactive UI framework with compiler magic, Runes API, SvelteKit full-stack framework, SSR/SSG, minimal JavaScript

Guide for advanced Next.js App Router patterns including Route Handlers, Parallel Routes, Intercepting Routes, Server Actions, error boundaries, draft mode, and streaming with Suspense. CRITICAL for server actions (action.ts, actions.ts files, 'use server' directive), setting cookies from client components, and form handling. Use when requirements involve server actions, form submissions, cookies, mutations, API routes, `route.ts`, parallel routes, intercepting routes, or streaming. Essential for separating server actions from client components.

フロントエンド開発（React/TypeScript）のベストプラクティスと規約