Backend

Use when Codex needs to query Supabase Postgres, manage auth, or trigger Edge Functions via the Supabase MCP server.

WordPress custom Gutenberg block development with server-side PHP rendering. Includes block registration patterns, media upload integration, multiple item blocks, proper escaping/sanitization, and editor UI best practices. Maintains separation of concerns where editors control content while developers control design.

Astro framework patterns for SSR/SSG, middleware, and TypeScript. Use when working with Astro pages, API routes, middleware configuration, or debugging rendering issues. Trigger phrases include "Astro", "prerender", "middleware", "SSR", "SSG", "static site".

Query DeepWiki for repository documentation and structure. Use to understand open source projects, find API docs, and explore codebases.

Expert in Chrome browser automation, debugging, and performance analysis using Chrome DevTools MCP. Use when browser automation, performance testing, web scraping, debugging, or browser interaction is needed. **CRITICAL:** Always uses persistent data-dir at ~/.claude/credentials/chrome for session management. (project, gitignored)

Implement comprehensive audit logging for all admin actions, capturing user ID, action type, entity changes, IP address, and user agent. Use when tracking system activities or adding audit trails.

Rust documentation generation and improvement. Use when documenting public APIs, creating examples, writing module-level docs, or improving existing documentation.

Enterprise-grade Python expertise with production patterns for Python 3.13.9, FastAPI 0.115.x, Django 5.2 LTS, Pydantic v2, SQLAlchemy 2.0; activates for API development, ORM usage, async patterns, testing frameworks, and production deployment strategies.

Rails project implementation, testing, and documentation support. Use this skill when working on Rails projects for implementing new features, adding tests to existing code, updating documentation, creating CRUD operations, building API endpoints, adding authentication, or any Rails development task. Triggers on Rails-specific implementation requests.

Expert in Microsoft SQL Server development and administration. Use when writing T-SQL queries, optimizing database performance, designing schemas, configuring SQL Server, or integrating SQL Server with Node.js using mssql package.

Uses ast-grep to find patterns and analyze code for refactoring. Use when planning refactors, finding deprecated API usage, migrating code, or analyzing code quality before changes. For simple code search, use searching-code instead.

Use when working with Rails projects, ActiveRecord models, controllers, routes, or Rails-specific patterns. Covers naming conventions, models, migrations, service objects, and testing with RSpec.

Documentation for the htmx JavaScript library (attributes, events, headers, API, extensions, examples, migration guides, server examples). Use when you need accurate htmx syntax/behavior or to locate the right reference page for an htmx question.

Ultimate 25+ years expert-level backend skill covering FastAPI, Express, Node.js, Next.js with TypeScript. Includes ALL databases (PostgreSQL, MongoDB, Redis, Elasticsearch), ALL features (REST, GraphQL, WebSockets, gRPC, Message Queues), comprehensive security hardening (XSS, CSRF, SQL injection, authentication, authorization, rate limiting), complete performance optimization (caching, database tuning, load balancing), ALL deployment strategies (Docker, Kubernetes, CI/CD), advanced patterns (microservices, event-driven, saga, CQRS), ALL use cases (e-commerce, SaaS, real-time, high-traffic), complete testing (unit, integration, E2E, load, security). Route protection, middleware, authentication implementation in PERFECTION. Use for ANY backend system requiring enterprise-grade security, performance, scalability, and architectural excellence.

Comprehensive backend development skill for building scalable backend systems using NodeJS, Express, Go, Python, Postgres, GraphQL, REST APIs. Includes API scaffolding, database optimization, security implementation, and performance tuning. Use when designing APIs, optimizing database queries, implementing business logic, handling authentication/authorization, or reviewing backend code.

Use when users ask about Claude Code features, setup, configuration, troubleshooting, slash commands, MCP servers, Agent Skills, hooks, plugins, CI/CD integration, or enterprise deployment. Activate for questions like 'How do I use Claude Code?', 'What slash commands are available?', 'How to set up MCP?', 'Create a skill', 'Fix Claude Code issues', or 'Deploy Claude Code in enterprise'.

Comprehensive software architecture skill for designing scalable, maintainable systems using ReactJS, NextJS, NodeJS, Express, React Native, Swift, Kotlin, Flutter, Postgres, GraphQL, Go, Python. Includes architecture diagram generation, system design patterns, tech stack decision frameworks, and dependency analysis. Use when designing system architecture, making technical decisions, creating architecture diagrams, evaluating trade-offs, or defining integration patterns.

Comprehensive backend development guide for Node.js/NestJS/TypeScript microservices. Use when creating controllers, services, database access, middleware, DTOs, or working with NestJS APIs, dependency injection, or async patterns. Covers layered architecture (controllers → services → dbservice), error handling, performance monitoring, testing strategies.

Manage Claude Code environments using natural language. Use this skill when:- User wants to add, deploy, or manage Claude Code artifacts (skills, commands, agents, MCP servers)- User asks about available skills or capabilities ("what skills exist for X?")- User wants to search for artifacts to solve a problem ("I need something for PDF processing")- Agent needs to discover or deploy capabilities for a development task- User wants to create, import, or share artifact bundles- User mentions "skillmeat", "claudectl", or managing their Claude Code setupSupports conversational requests and the claudectl power-user alias.

Avaliar métricas Micrometer/Prometheus, exposição de Actuator e integrações Grafana/Alertmanager do backend Spring WebFlux para garantir observabilidade consistente no Swarm.