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ia-nodejs-backend

Design and implement layered Node.js REST APIs with contract-first validation and TypeScript error handling.

30|3|Updated Feb 22, 2026
Search Tags:#typescript#error handling#clean architecture#production readiness#rest api#nodejs#zod validation
One-click install
npx skills add https://github.com/iliaal/whetstone --skill ia-nodejs-backend
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: ia-nodejs-backend
Source: https://github.com/iliaal/whetstone/tree/main/plugins/whetstone/skills/ia-nodejs-backend
Command: npx skills add https://github.com/iliaal/whetstone --skill ia-nodejs-backend

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Prevents AI coding agents from producing undisciplined Node.js backends by enforcing a clear plan-first architecture, strict validation, predictable error handling, and production-ready resilience.

Core Features & Use Cases

  • Clean architecture layering: keeps HTTP concerns out of services and repositories out of HTTP/error responsibilities.
  • Contract-first API design: uses schema-driven contracts (Zod/Fastify JSON Schema/OpenAPI) to control response shapes and reduce Hyrum’s Law surprises.
  • Strong TypeScript + validation + errors: promotes type-safe boundaries, Zod/TypeBox validation at entry points, and an operational error hierarchy with consistent envelopes.
  • Production hardening patterns: covers env validation, health/readiness endpoints, caching, load shedding, circuit breakers, and response schemas.

Quick Start

Ask the agent to design and implement a Fastify REST API endpoint with Zod request/response schemas, layered routes/services/repositories, and a consistent operational error envelope.

Frequently Asked Questions about ia-nodejs-backend

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I structure a Node.js REST API with clean architecture?▼

Structure your Node.js REST API using clean architecture by enforcing a strict dependency direction from routes to services to repositories, keeping HTTP concerns out of business logic and data access layers.

How do I implement centralized error handling in TypeScript backends?▼

Centralized error handling in TypeScript backends uses an operational error hierarchy and a consistent error envelope processed by a single handler to manage predictable API failures.

Does this approach work with Fastify, NestJS, and Hono?▼

Yes, these disciplined TypeScript backend patterns apply to Fastify, NestJS, Hono, Express, Koa, tRPC, and Bun servers, exposing API endpoints and middleware across various server runtimes.

What is contract-first API design with Zod validation?▼

Contract-first API design uses Zod validation schemas to control request and response shapes at API boundaries, enforcing type-safe contracts and reducing unexpected integration issues.

How do I make a Node.js backend production ready?▼

Make a Node.js backend production ready by implementing environment validation, health endpoints, caching, load shedding, and circuit breakers to ensure operational resilience.

Why do I need boundary validation in a REST API?▼

Boundary validation in a REST API is needed to intercept untrusted input at entry points using Zod or TypeBox, ensuring that internal services only process verified, type-safe data.

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