Backend

Build AI chat interfaces with custom backends, authentication, and context injection.Use when integrating chat UI with AI agents, adding auth to chat, injecting user/page context,or implementing httpOnly cookie proxies. Covers ChatKitServer, useChatKit, and MCP auth patterns.NOT when building simple chatbots without persistence or custom agent integration.

Documentation organization, maintenance, and cleanup.USE WHEN: organizing docs, cleaning project root, updating documentation,checking for redundancy, maintaining docs structure.NOT FOR: technical implementation (use relevant technical skill).Examples:<example>Context: User added documentation to wrong location.user: "I added a new API doc file to the root directory"assistant: "I'll use docs-keeper to organize it in the proper docs/ location."<commentary>File organization is docs-keeper responsibility.</commentary></example><example>Context: User needs to update docs after code changes.user: "I modified the auth system and need to update the docs"assistant: "I'll use docs-keeper to update the authentication documentation."<commentary>Documentation updates are docs-keeper responsibility.</commentary></example>

[Extends backend-developer] Senior Kotlin specialist for JVM, Native, and KMP. Use for coroutines, Ktor, kotlinx.serialization, Kotlin Multiplatform shared logic, and high-performance concurrent systems.

Configure e otimize ambientes de desenvolvimento Docker para projetos NestJS com hot-reload, persistência de dados, health checks e debugging eficiente.

Build Shopify applications, extensions, and themes using GraphQL/REST APIs, Shopify CLI, Polaris UI components, and Liquid templating. Capabilities include app development with OAuth authentication, checkout UI extensions for customizing checkout flow, admin UI extensions for dashboard integration, POS extensions for retail, theme development with Liquid, webhook management, billing API integration, product/order/customer management. Use when building Shopify apps, implementing checkout customizations, creating admin interfaces, developing themes, integrating payment processing, managing store data via APIs, or extending Shopify functionality.

Guide for implementing Cloudflare Browser Rendering - a headless browser automation API for screenshots, PDFs, web scraping, and testing. Use when automating browsers, taking screenshots, generating PDFs, scraping dynamic content, extracting structured data, or testing web applications. Supports REST API, Workers Bindings (Puppeteer/Playwright), MCP servers, and AI-powered automation. (project)

Load when working on documentation systems, README files, API docs, orimplementing documentation workflows. Contains best practices for treatingdocumentation as code with version control, automation, and CI/CD integration.

Creates a battle-tested ChatGPT-style chatbot widget that solves real-world production issues. Features infinite re-render protection, text selection "Ask AI", RAG backend integration, streaming SSE, and comprehensive performance monitoring.

Enterprise C# 13 development with .NET 9, async/await, LINQ, Entity Framework Core, ASP.NET Core, and Context7 MCP integration for modern backend and enterprise applications.

Research GitHub, GitLab, and Bitbucket repositories using DeepWiki MCP server. Use when exploringunfamiliar codebases, understanding project architecture, or asking questions about how a specificopen-source project works. Provides AI-powered repo analysis and RAG-based Q&A about source code.NOT for fetching library API docs (use fetching-library-docs instead) or local files.

FastAPI with PostgreSQL, async SQLAlchemy 2.0, Alembic, and Docker.

This skill should be used when the user asks to "provision a VPS", "create a Hetzner server", "spin up a cloud server", "launch a Hetzner instance", "set up a cloud server for Claude Code", "deploy Claude Code to a server", "create a VPS for Claude", or mentions Hetzner Cloud provisioning. Automates VPS creation with Claude Code pre-installed.

Instrument safety checks, content filters, and guardrails for agent outputs

Codex MCP tool reference. Supplemental parameter docs for codex tool (tuannvm/codex-mcp-server).

Configure multi-platform deployment for FastAPI applications including Docker containerization, Railway, DigitalOcean App Platform, and AWS deployment. Use when deploying FastAPI apps, setting up production environments, containerizing applications, configuring cloud platforms, implementing health checks, managing environment variables, setting up reverse proxies, or when user mentions Docker, Railway, DigitalOcean, AWS, deployment configuration, production setup, or container orchestration.

Query the China Biographical Database (CBDB) API to retrieve comprehensive biographical data about historical Chinese figures. Use this skill when searching for information about Chinese historical figures, scholars, officials, or literary figures from the 7th century BCE through the 19th century CE. Applicable for queries about biographical details, social relationships, official positions, or when users mention specific Chinese names or CBDB person IDs.

Documentation lookup using Context7 MCP server. Use when needing up-to-date documentation for any library, crate, framework, or API. Always use this for Rust crates, npm packages, Python libraries, or any external dependency documentation.

Coffi FFI library for calling native C code from Clojure via Panama FFM API (JDK 22+). Use when: wrapping native C libraries, calling native functions, working with off-heap memory and arenas, etc.

Work with Gemini File API for document caching and efficient multi-query workflows. Use when discussing file uploads, caching strategies, token optimization, or comparing File API vs inline document approaches.

This skill should be used when adding new restaurant features across the full stack (Backend → Shared → Web → Mobile).Trigger keywords: "레스토랑 검색/필터/정렬 추가", "restaurant search/filter/sort", "레스토랑 API 수정", "restaurant list UI 업데이트".Provides step-by-step workflow for database migrations, backend API updates, shared layer updates, and frontend UI implementation.