Backend Dev Guidelines

A comprehensive rulebook for Node.js/Express/TypeScript microservices that enforces layered architecture (routes to controllers to services to repositories). Activates when you're working with Express APIs, Prisma, Sentry, or Zod validation. The core is seven strict rules: routes only route, all controllers extend BaseController, all errors go to Sentry, never touch process.env directly (use unifiedConfig instead), validate everything with Zod, use repositories for data access, and write tests. Includes templates from their mature blog-api and auth-service implementations. Honestly this reads like internal team standards that got polished into a skill, which makes it actually useful if you're building similar microservices or want opinionated structure instead of reinventing patterns.