Development

Webhook validation patterns with signature verification, event logging, and testing tools. Use when implementing webhooks, validating webhook signatures, securing payment webhooks, testing webhook endpoints, preventing replay attacks, or when user mentions webhook security, Stripe webhooks, signature verification, webhook testing, or event validation.

Audit a repository's structure and propose a safe, approval-gated reorganization plan. Use when asked to review repo anatomy, propose folder changes, or apply an approved reorg with rollback.

Manage environment configurations, secrets, and .env files across environments. Use when configuring application environments or managing secrets.

Factory.ai Droid CLI integration for autonomous AI coding agent. Supports interactive and exec modes with multiple autonomy levels for code review, feature development, and testing. Activated when users need terminal-based AI assistance for comprehensive code tasks.

Scaffold a new Lean 4 project in the workspace. Use when creating a new project, library, or application.

Unified enterprise programming language skill covering 25+ languages including Python 3.13, TypeScript 5.9, Go 1.23, Rust 1.91, Java 21, JavaScript ES2025, C++, C#, PHP, Swift, Kotlin, Scala, Elixir, Ruby, R, SQL, Shell, and more with patterns, best practices, and Context7 integration

Production-ready 3D globe implementation with React Three Fiber for React Native. Use when implementing interactive 3D globes with GLB models, country/continent selection, smooth camera animations, and gesture controls in Expo apps. Optimized for iOS 60fps performance.

Maintains synchronized project context for long-running work across sessions.Use when: starting a session (read context), completing significant work (update context),making architectural decisions (document rationale), or before stopping work (ensure clean handoff).Triggers on: "continue working", "what's next", "resume", "pick up where", "context", "progress","document", "handoff", "session", "PROGRESS.md", "plan feature", "feature list"

Enterprise DevOps with Kubernetes 1.31, Docker 27.x, Terraform 1.9, GitHub Actions, monitoring with Prometheus/Grafana, and cloud-native architectures

End-to-end testing patterns for backend services. Use when testing complete application flows.

Guide for implementing MCP Apps (SEP-1865) - interactive UI extensions for MCP servers. Use when building MCP servers that need to return rich, interactive HTML-based UIs alongside tool results for conversational AI hosts like Claude Desktop or ChatGPT.

어떤 작업사항을 리뷰할지 사용자에게 물어본 후, 코덱스를 이용하여 해당 작업사항을 리뷰합니다.주요 명령어: codex exec, codex apply, codex resume

cc-sdd (Claude Code Spec-Driven Development) 統合スキル。/kiro:* コマンドで呼び出し可能。要件定義、設計、タスク分解、実装を自動化。Use when: spec-driven development, requirements, design, tasks, /kiro commands,設計, タスク分解, 仕様から実装へ, Plans.md generation.

Research and discover programmatic SEO opportunities for your app. Use this skill to identify high-value page types, validate search demand, analyze competition, and prioritize opportunities before building.

Validate Claude Code skills, commands, agents, hooks, and plugins against specifications.Checks structure, format, best practices, and common issues before committing or distributing.Use when: validating skills, checking plugins, linting components, ensuring quality.Activates for: "validate skill", "check skill", "validate plugin", "lint skill", "verify skill"

A tiered approach to answering research questions with clear stop rules, evidence capture, and escalation to Tavily/Playwright only when needed.

Extract PRD worksheets from existing codebases

Use when building a production-ready REST API from requirements through deployment.Orchestrates 8-12 specialist agents across 5 phases using Test-Driven Development methodology.Covers planning, architecture, TDD implementation, comprehensive testing, documentation, andblue-green deployment over a 2-week timeline with emphasis on quality and reliability.

Review code for quality, security, and best practices. Use when asked to review code, find bugs, or suggest improvements.

Use when the user asks to "refactor shell script", "fix bash style", "apply Google style guide to shell", "review shell script style", "format bash script", or when writing, reviewing, or refactoring shell/bash scripts. Provides Google Shell Style Guide rules for formatting, quoting, naming, control flow, and common anti-patterns.