Backend Fundamentals Review "APIs are contracts. Break them, and you break trust." When to Apply Activate this skill when reviewing: - API route handlers - Express/Fastify/Hono middleware - Database queries and models - Authentication/authorization logic - Server-side business logic --- Review Checklist API Design - [ ] RESTful : Do routes follow REST conventions? (GET for read, POST for create, etc.) - [ ] Naming : Are endpoints nouns, not verbs? ( not ) - [ ] Versioning : Is API versioned for future changes? ( ) - [ ] Status Codes : Are correct HTTP status codes returned? Separation of Conc…