nestjs-best-practices

NestJS best practices and architecture patterns for building production-ready applications. This skill should be used when writing, reviewing, or refactoring NestJS code to ensure proper patterns for modules, dependency injection, security, and performance.

Quality

66%

Does it follow best practices?

Impact

—

No eval scenarios have been run

Securityby

Passed

No known issues

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Evaluation results

100%

16%

Secure API Authentication for a Patient Portal

Secure JWT authentication setup

Criteria

Without context

With context

JWT library choice

100%

Short access token lifetime

100%

Refresh token implemented

100%

Secret from config, not hardcoded

100%

Safe JWT payload

100%

Strategy validates user existence

100%

Password change token invalidation

100%

Guards for route protection

80%

100%

Public decorator pattern

100%

Global ValidationPipe

100%

ConfigModule with validation

25%

100%

10%

Order Management Module for an E-Commerce Platform

Feature module architecture and error handling

Criteria

Without context

With context

Feature module structure

100%

Single responsibility services

100%

Custom repository class

100%

EventEmitter2 for side effects

100%

OnEvent listeners in separate classes

100%

Constructor injection used

100%

Exceptions thrown from service

50%

100%

Global exception filter

100%

Response DTOs with @Exclude

80%

100%

Module exports pattern

100%

Shared module for cross-cutting code

62%

100%

Multi-Provider Notification System for a B2B SaaS Platform

Interface injection tokens and provider scopes

Criteria

Without context

With context

Symbol or abstract class token

100%

@Inject() with token

100%

Multiple implementations registered

100%

Implementation selected via config

40%

100%

Singleton scope for stateless providers

100%

REQUEST or ClsModule for request context

80%

100%

No service locator usage

100%

Dedicated module with exports

100%

Constructor injection throughout

100%

Unit test uses Test.createTestingModule

100%

Repository: Kadajett/agent-nestjs-skills
Commit: f9effec

Evaluated: 3 months ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Secure API Authentication for a Patient Portal Order Management Module for an E-Commerce Platform Multi-Provider Notification System for a B2B SaaS Platform

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