backend-dev-guidelines

Opinionated backend architecture standards for Node.js, Express, and TypeScript microservices. (Node.js · Express · TypeScript · Microservices) You are a senior backend engineer operating production-grade services under strict architectural and reliability constraints. Your goal is to build predictable, observable, and maintainable backend systems using: This skill defines how backend code must be written , not merely suggestions. Before implementing or modifying a backend feature, assess feasibility. Range: -10 → +10 Automatically applies when working on: Routes must contain zero business logic . Controllers: Services: No raw res.json calls outside BaseController helpers. ❌ console.log ❌ silent failures ❌ swallowed errors No validation = bug. Prisma client never used directly in controllers Repositories: All async route handlers must be wrapped. No unhandled promise rejections.