Backend

Spring Boot CQRS 도메인 구조 생성. Use when:(1) 새 도메인 구현 시작, (2) v0.1.x PROJECT 단계,(3) CQRS 구조 필요 시.

Optimize the research agent for rate limit handling, API call efficiency, web search integration fixes, and improved streaming UX with granular progress updates and source attribution.

Shopify API patterns, GraphQL, webhooks

Modern Node.js backend stack: NestJS/Hono, Drizzle ORM, Vitest, TypeScript.Use when: building Node.js APIs, TypeScript backends, or serverless functions.Triggers: "nestjs", "node backend", "express", "hono", "drizzle", "vitest","typescript api", "node api", "bun".

Proactively detect and execute code refactoring to maintain DDD architecture and code quality.LOAD THIS SKILL WHEN: Code file exceeds 200 lines | function exceeds 30 lines | User says "refactor", "重構", "拆分", "模組化", "太長" | cyclomatic complexity > 10 | deeply nested code.CAPABILITIES: Extract Method, Extract Class, Split Module, Replace Conditional with Polymorphism, DDD architecture compliance.

Use when Codex needs to inspect or modify files via the local Python filesystem MCP server running at `servers/filesystem`.

Static analysis security vulnerability scanner for Ruby on Rails applications. Use when analyzing Rails code for security issues, running security audits, reviewing code for vulnerabilities, setting up security scanning in CI/CD, managing security warnings, or investigating specific vulnerability types (SQL injection, XSS, command injection, etc.). Also use when configuring Brakeman, reducing false positives, or integrating with automated workflows.

Master Directus backend internals: API extensions, hooks, flows, services, and database operations

A skill for implementing robust API request validation in Python web frameworks like FastAPI using Pydantic. Covers Pydantic models, custom validators (email, password), field-level and cross-field validation, query/file validation, and structured error responses. Use when you need to validate incoming API requests.

Generate complete package.json files with appropriate dependencies, scripts, and configuration for Node.js projects of various types. Triggers on "create package.json", "generate package.json for", "npm init for", "node project setup".

Expertise for using OpenCode (an open-source AI coding agent) and building client applications that interact with the OpenCode HTTP server. Use this skill when the user asks about OpenCode features, how to use it, or how to build tools/clients that integrate with the OpenCode server API.

Comprehensive backend development guide for Node.js/Express/TypeScript microservices. Use when creating routes, controllers, services, repositories, middleware, or working with Express APIs, Prisma database access, Sentry error tracking, Zod validation, unifiedConfig, dependency injection, or async patterns. Covers layered architecture (routes → controllers → services → repositories), BaseController pattern, error handling, performance monitoring, testing strategies, and migration from legacy patterns.

Master .NET async/await patterns including Task-based Asynchronous Pattern (TAP), ValueTask optimization, ConfigureAwait usage, cancellation tokens, parallel processing, and avoiding deadlocks in ASP.NET Core applications for maximum performance and responsiveness.

Personal knowledge base for Shapira family daily life. Use when querying or storing information about hotels, swim meet venues, travel logistics, restaurants, service providers, or any location-based preferences. Triggers on phrases like "remember this hotel", "where did we stay", "next time in [city]", "log this location", or references to past stays/visits.

Slide development expertise for Slide-Vibing/Reveal.js presentations. Use when creating slides, modifying slide structure, adding animations, configuring comments, or working with the slides-runtime.js API.

Sleep science and Asleep sleep tracking knowledge. Use when working with sleep data, hypnograms, sleep stages, sleep insights, sleep metrics, or any sleepstar/agent-a/backend sleep-related code.

Design, implement, and debug a custom ChatKit backend in Python that powers the ChatKit UI without Agent Builder, using the OpenAI Agents SDK (and optionally Gemini via an OpenAI-compatible endpoint). Use this Skill whenever the user wants to run ChatKit on their own backend, connect it to agents, or integrate ChatKit with a Python web framework (FastAPI, Django, etc.).

Comprehensive skill for scvi-tools - Deep probabilistic models for single-cell omics analysis. Use for scVI, scANVI, totalVI, MultiVI models, single-cell RNA-seq integration, batch correction, differential expression, and multimodal data analysis.

Manages authentication flow for MutuaPIX (Laravel Sanctum + Next.js), handles mock mode security, and validates environment configurations

Connect Claude Code with GitHub Issues for rapid problem resolution. This skill should be used when users need to manage, analyze, prioritize, and resolve GitHub issues automatically without manual intervention.