Expert back-end developer prioritizing strict MVC conventions, separation of concerns, security, data integrity, and reliability. Use this skill when the task involves building, refactoring, reviewing, or advising on server-side logic, APIs, databases, authentication, queues/jobs, third-party integrations, error handling, migrations, or administrative features in web applications (framework-agnostic but strongly MVC-oriented).
React component architecture and composition patterns for type-safe development. Use when designing component APIs, implementing composition patterns, or structuring component libraries.
Enterprise Backend-as-a-Service Foundation with AI-powered BaaS architecture patterns, strategic provider selection, and intelligent multi-service orchestration for scalable production applications
Advanced FastAPI patterns including hierarchical dependency injection, background task management, and type-safe dependency annotation. Triggers: fastapi, dependency-injection, background-tasks, annotated-dependency, permission-chain.
Deep expertise in the Gravito Enterprise MVC architecture (Laravel-inspired). Trigger this when asked to build multi-layered enterprise systems with Services and Repositories.
Guide for implementing Clean Architecture in Python/FastAPI projects. Use when creating new modules, refactoring existing code to Clean Architecture, designing layer structures, or implementing Port/Adapter patterns. Triggers on "clean architecture", "hexagonal", "ports and adapters", "layer structure", "DIP", "dependency inversion".
Comprehensive error handling patterns for robust applications including custom errors, error boundaries, recovery strategies, and user-facing error messages. Use this skill when designing error hierarchies, implementing React error boundaries, adding retry logic or fallbacks, creating API error responses, integrating error tracking (Sentry), or improving user error communication. Triggers on "error handling", "error boundary", "custom error", "retry logic", "graceful degradation", "error tracking", "Sentry", "user error message", "try-catch", "Result type", "circuit breaker".
Laravel 12 best practices, design patterns, and coding standards. Use when creating controllers, models, services, middleware, or any PHP backend code in Laravel projects.
REST/GraphQL API design patterns, error handling, and versioning. Use when designing APIs, handling errors, or making API architecture decisions.
Feature-based architecture patterns, state management, and code organization for the Angular admin application.
NestJS backend conventions, controller patterns, HTTP verbs, guards, and service layer practices.
Backend engineering patterns and checklists for production APIs
Type-safe APIs with tRPC - End-to-end typesafe APIs without code generation. Covers routers, procedures, context, middleware, and React Query integration. Trigger: When creating tRPC routers, when implementing procedures, when setting up API endpoints, when using tRPC with React Query.
Backend API routes, Prisma schema/migrations, and server-side validation patterns for markdowntown. Use when editing Next.js App Router API handlers, Prisma models/migrations, auth/session gating, rate limits, cache revalidation, or backend validation logic.
Advanced Next.js routing: Route Handlers (API routes), Server Actions ('use server'), Parallel Routes (@slot), Intercepting Routes ((.)), Error Boundaries, Draft Mode, Suspense streaming.
Generate comprehensive FastAPI CRUD operations with models, schemas, routes, and database integration. Use when creating REST API endpoints for database entities with full Create, Read, Update, Delete functionality, including Pydantic schemas, SQLAlchemy models, dependency injection, and proper error handling.
Express.js API development, route handling, middleware, error handling, request validation, CORS. Use when building Express routes, implementing middleware, handling API requests, or setting up the backend server.
Standardize Next.js App Router API route implementations under src/app/api/** (auth/session, input validation, Drizzle queries, rate limiting, response shape). Use when creating or refactoring API routes in this repo.
Build Node.js backend services with Express/Fastify, PostgreSQL, and services pattern. Use when creating backend APIs, setting up servers, or connecting to databases.
Comprehensive FastAPI development guide from beginner to production. This skill should be used when building REST APIs, web backends, microservices, or any Python web application with FastAPI. Covers project setup, routing, Pydantic models, async database operations, authentication (JWT/OAuth2), dependency injection, background tasks, WebSockets, testing, and production deployment. Triggers on tasks like "create a FastAPI app", "build an API", "add authentication", "connect database", "deploy FastAPI", or any FastAPI-related development.
