Backend

Configuring Claude Code settings.json & Security. Set up permissions (allow/deny), permission modes, environment variables, tool restrictions. Use when securing Claude Code, restricting tool access, or optimizing session settings.

Backend programming languages including Node.js, Python, Java, Go, PHP, Rust, C++, and ASP.NET Core. Master server-side development, APIs, databases, and enterprise systems.

Explains Claude Code's extensibility features (skills, slash commands, hooks, MCP servers, settings, CLAUDE.md). Use when the user asks about Claude Code capabilities, how to set up custom commands, how to create skills, how to configure hooks, MCP server integration, or any meta-questions about Claude Code itself like "can you do X" or "how do I make you do Y".

Create original visual art in PNG and PDF formats using design philosophy principles. Express aesthetic movements visually with minimal text. Use for creating museum-quality visual artifacts, design manifestos, and artistic compositions.

Configure FastAPI for Vercel deployment.Bundled Resources: Includes 'vercel.json', CORSMiddleware, Python logging setup, and Pydantic model examples.

Evaluate codebase architecture against ADRs, coupling rules, and team guardrails before approving major work.

Write HashiCorp-compliant Terraform infrastructure code for Azure with automated style validation. Optimized for azurerm and azapi providers. Use when implementing Terraform resources, modules, or configurations. Triggers include "write terraform", "create tf module", "terraform code", "implement infrastructure as code", or working with .tf files. ALWAYS uses Terraform MCP tools to query provider documentation before implementation.

Comprehensive unified BaaS (Backend-as-a-Service) integration hub for 9 major providers: Auth0, Clerk, Firebase Auth, Supabase, Neon, Convex, Firebase Firestore, Vercel, and Railway with AI-powered provider selection, cross-provider patterns, and migration guides.

Expert knowledge of Express.js and Node.js for building production-ready web applications and APIs. Covers middleware patterns, routing, async/await error handling, security, performance optimization, proxy patterns, static file serving, and production deployment. Use when working with server.js, adding routes, implementing middleware, debugging Express issues, or optimizing API endpoints.

Adds a complete blog feature to an existing Blazor WebAssembly Static Web App with Azure Functions backend and Azure File Share for markdown storage. Use when implementing blog functionality in .NET Blazor WASM projects with Azure infrastructure. Includes post listing, detail pages, markdown rendering, Azure Storage integration.

ACTIVATE when debugging a skill, analyzing why a prompt isn't working, or stuck on a technical problem. Triggers on "what would the panel say", "let's debug this", "why isn't this working", "convene the panel", or when user expresses confusion about skill behavior.

Flatten nested conditionals with early returns or table-driven methods - keep nesting depth under 3 levels

Triggering and managing AI reflection cycles in StickerNest. Use when the user wants to run AI evaluation, trigger reflection, check AI quality, improve AI prompts, analyze AI performance, or audit AI generations. Covers reflection triggers, evaluation analysis, and improvement actions.

WHEN: Spring Boot + Kotlin, Ktor backend review, coroutine-based server, WebFlux/R2DBC pattern checksWHAT: Spring Kotlin idioms + Coroutines integration + WebFlux patterns + Data class usage + Test strategiesWHEN NOT: Android → kotlin-android-reviewer, KMP shared code → kotlin-multiplatform-reviewer

Interactive API testing tool for the Kindle notes backend. Tests endpoints with intelligent data checking, minimal test data creation, and timing metrics.

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

Use this skill to verify whether restaurants actually have Planted products on their current menu. Crawls restaurant websites, parses PDF menus, and updates venue verification status in Firestore.

Desktop customization for Bazzite. GTK theme restoration, terminal transparency,and MOTD settings. Use when users need to customize their desktop appearance.

Skill for creating and editing PHP tests following project conventions. Use when creating tests, updating test files, or refactoring tests. Applies proper structure, naming, factory usage, and Laravel/PHPUnit best practices.

Design and implement RESTful API endpoints following REST principles with proper HTTP methods, status codes, resource-based URLs, and rate limiting. Use this skill when creating or modifying API endpoints, route handlers, controllers, or any backend API layer code. Apply when working on files that define API routes (routes/*.ts, controllers/*.ts, api/*.ts, *Controller.cs), implement request/response handlers, establish API versioning, or configure endpoint middleware. Use when building Bun/Express APIs, ASP.NET Core Web APIs, or Next.js API routes. This skill ensures RESTful design with clear resource-based URLs, consistent lowercase hyphenated naming, appropriate HTTP methods (GET, POST, PUT, PATCH, DELETE), proper status codes (200, 201, 400, 404, 500), plural nouns for resources (/users, /products), limited nesting depth (2-3 levels max), query parameters for filtering/sorting/pagination, API versioning strategies, and rate limiting headers in responses.