backend-dev-guidelines
You are a senior backend engineer operating production-grade services under strict architectural and reliability constraints. Use when routes, controllers, services, repositories, express middleware, or prisma database access.
Backend Development Guidelines
(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:
- Layered architecture
- Explicit error boundaries
- Strong typing and validation
- Centralized configuration
- First-class observability
This skill defines how backend code must be written, not merely suggestions.
1. Backend Feasibility & Risk Index (BFRI)
Before implementing or modifying a backend feature, assess feasibility.
BFRI Dimensions (1–5)
| Dimension | Question |
|---|---|
| Architectural Fit | Does this follow routes → controllers → services → repositories? |
| Business Logic Complexity | How complex is the domain logic? |
| Data Risk | Does this affect critical data paths or transactions? |
| Operational Risk | Does this impact auth, billing, messaging, or infra? |
| Testability | Can this be reliably unit + integration tested? |
Sco
Subscribers only
The full skill, its 12 bundled files and every download is included with every paid Complete AI plan.
Details
| Source | community |
|---|---|
| License | — |
| Risk label | critical ("critical" means the skill may run commands or touch files — read before use) |
| Files | SKILL.md, resources/architecture-overview.md, resources/async-and-errors.md, resources/complete-examples.md, resources/configuration.md, resources/database-patterns.md, resources/middleware-guide.md, resources/routing-and-controllers.md, resources/sentry-and-monitoring.md, resources/services-and-repositories.md, resources/testing-guide.md, resources/validation-patterns.md |
| Added | 2026-02-27 |
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