Development
Frontend, Backend, Mobile, and Full-Stack development skills
20307 skills in this category
Subcategories
debugging
Debug issues in the Second Brain Nuxt 4 + @nuxt/content v3 project. Use for any bug, test failure, or unexpected behavior.
security-review
Scan code changes for security vulnerabilities using STRIDE threat modeling, validate findings for exploitability, and output structured results for downstream patch generation. Supports PR review, scheduled scans, and full repository audits.
testing
Testing strategy orchestrator. Use when discussing test types, test order, or choosing how to test something. Auto-apply for general testing questions.
hcloud-go-sdk
Use when writing Go code to interact with Hetzner Cloud API - automation, infrastructure provisioning, bots, integrations, or programmatic cloud operations
skill-writer
Creates and validates Claude Code skills with proper format. Use when creating new skills, writing SKILL.md files, validating existing skills, or when user mentions "skill format", "create skill", "skill template", or "validate skill".
github-operations
Use when Codex must inspect or update GitHub resources (issues, PRs, workflows) through the official remote GitHub MCP server.
backend-api
Design and implement RESTful API endpoints following industry best practices for resource naming, HTTP methods, status codes, and versioning. Use this skill when creating or modifying API route handlers, endpoint files, controller files, or API router configuration files. Use this skill when working with REST API design, implementing HTTP endpoints in backend frameworks, defining API routes and URL patterns, setting up API versioning strategies, or configuring request/response handling in web services. Use this skill when working with files in routes/, api/, controllers/, endpoints/, or views/ directories that handle HTTP requests. Use this skill when defining OpenAPI/Swagger specifications, implementing rate limiting, or establishing API conventions for your application.
allra-test-writing
Allra 백엔드 테스트 작성 표준. Use when writing test code, choosing test helpers, generating test data with Fixture Monkey, or verifying test coverage.
guideline-lookup
Look up Fannie Mae underwriting guidelines for income, assets, credit, or collateral verification. Use when questions involve DTI, income documentation, asset requirements, credit standards, or any B3/B4 guideline references. Reads guidelines dynamically from configs/guidelines/ - never hardcodes content.
barqnet-client
Specialized agent for BarqNet client application development across Desktop (Electron/TypeScript), iOS (Swift), and Android (Kotlin). Handles UI/UX implementation, OpenVPN integration, platform-specific features, secure storage, and native API usage. Use when developing client-side features, fixing UI bugs, or implementing platform-specific functionality.
jupytext
This skill should be used when the user asks to "convert notebook to text", "use jupytext", "version control notebooks", "share data between kernels", "set up multi-kernel project", "pair notebooks with Python files", "sync ipynb and py files", or needs multi-kernel projects (Python/R/Stata/SAS) with version-control-friendly notebooks.
frontend-design
Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics.
java-ddd-hexagonal
Guide Claude to create domain modules following DDD principles and hexagonal architecture for Java + Spring Boot projects.Use when user requests:(1) "Create a new module" / "새 모듈 만들어줘" / "도메인 모듈 생성"(2) "Add {feature} module" (e.g., "Add order module", "Add product module")(3) "Build {domain} bounded context" / "{domain} 바운디드 컨텍스트 구현"(4) Any request to create a new domain module for Java + Spring Boot projects with DDD and hexagonal architecture.Applies Kent Beck's TDD workflow (Red → Green → Refactor).Adapts to any Java/Spring Boot project by reading CLAUDE.md at project root.Uses Java 17+ features including records, sealed classes, and pattern matching.
pr-review-common-patterns
Common patterns in PR reviews including false positives, security vulnerabilities, N+1 queries, breaking changes, and edge cases. Use when analyzing code, verifying findings, or understanding typical issues.
htmx
Adds AJAX, CSS Transitions, WebSockets, and Server Sent Events to HTML using attributes. Use when building hypermedia-driven applications, adding interactivity without JavaScript frameworks, or when user mentions HTMX, hx-boost, or HTML-first development.
mcp-server-setup
MCP (Model Context Protocol) server selection and configuration skill usingDocker MCP Toolkit as the primary orchestration method. Guides dynamic serverdiscovery, installation via Docker gateway, and fallback to direct installation.Should be executed after /initialize-project to extend Claude Code's capabilities.
pod-scaffold-contract
This skill should be used when developers need to generate pod network smart contract boilerplate. It orchestrates the pod-templating MCP server to scaffold production-ready contracts (tokens, NFTs, voting, auctions, basic) using FastTypes for order-independent execution. Use when starting new contracts, migrating from Ethereum, or needing pod-specific patterns.
skill-writer
Guide users through creating Agent Skills for Claude Code. Use when the user wants to create, write, author, or design a new Skill, or needs help with SKILL.md files, frontmatter, or skill structure.
livekit-nextjs-frontend
Build and review production-grade web and mobile frontends using LiveKit with Next.js. Covers real-time video/audio/data communication, WebRTC connections, track management, and best practices for LiveKit React components.
cloudflare-workers
Optimize code for Cloudflare Workers free plan with 10ms CPU limit. Use when writing API routes, server code, middleware, or discussing performance optimization.