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.
Profile →npx skills add sickn33/agentic-awesome-skills --skill backend-dev-guidelines --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# 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? | ### Score Form
- 1. Backend Feasibility & Risk Index (BFRI)
- BFRI Dimensions (1–5)
- Score Formula
- Interpretation
- When to Use
- 2. Core Architecture Doctrine (Non-Negotiable)
- 1. Layered Architecture Is Mandatory
- 2. Routes Only Route
- 3. Controllers Coordinate, Services Decide
- 4. All Controllers Extend BaseController
- 5. All Errors Go to Sentry
- 6. unifiedConfig Is the Only Config Source
- 7. Validate All External Input with Zod
- 3. Directory Structure (Canonical)
What does the backend-dev-guidelines skill do?
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.
How do I install it?
Run `npx skills add sickn33/agentic-awesome-skills --skill backend-dev-guidelines --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From sickn33/agentic-awesome-skills, a repository with 44,414 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.