# Nestjs Best Practices

NestJS best practices and architecture patterns for building production-ready...

- Repository: https://github.com/trycompai/crm (11793 stars)
- Category: Security
- License: MIT
- Last updated: 2026-10-31
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add trycompai/crm --skill nestjs-best-practices -g -a claude-code -y`
Codex: `npx skills add trycompai/crm --skill nestjs-best-practices -g -a codex -y`
Cursor: `npx skills add trycompai/crm --skill nestjs-best-practices -g -a cursor -y`
Gemini CLI: `npx skills add trycompai/crm --skill nestjs-best-practices -g -a gemini-cli -y`

## Description

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.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# NestJS Best Practices

Comprehensive best practices guide for NestJS applications. Contains 40 rules across 10 categories, prioritized by impact to guide automated refactoring and code generation.

## When to Apply

Reference these guidelines when:

- Writing new NestJS modules, controllers, or services
- Implementing authentication and authorization
- Reviewing code for architecture and security issues
- Refactoring existing NestJS codebases
- Optimizing performance or database queries
- Building microservices architectures

## Rule Categories by Priority

| Priority | Category | Impact | Prefix |
|----------|----------|--------|--------|
| 1 | Architecture | CRITICAL | `arch-` |
| 2 | Dependency Injection | CRITICAL | `di-` |
| 3 | Error Handling | HIGH | `error-` |
| 4 | Security | HIGH | `security-` |
| 5 | Performance | HIGH | `perf-` |
| 6 | Testing | MEDIUM-HIGH | `test-` |
| 7 | Database & ORM | MEDIUM-HIGH | `db-` |
| 8 | API Design | MEDIUM | `api-` |
| 9 | Microservices | MEDIUM | `micro-` |
| 10 | DevOps & Deployment | LOW-MEDIUM | `devops-` |

## Quick Reference

### 1. Architecture (CRITICAL)

- `arch-avoid-circular-deps` - Avoid circular module dependencies
- `arch-feature-modules` - Organize by feature, not technical layer
- `arch-module-sharing` - Proper module exports/imports, avoid duplicate providers
- `arch-single-responsibility` - Focused services over "god services"
- `arch-use-repository-pattern` - Abstract database logic for testability
- `arch-use-events` - Event-driven architecture for decoupling

### 2. Dependency Injection (CRITICAL)

The rest: https://github.com/trycompai/crm/blob/HEAD/.agents/skills/nestjs-best-practices/SKILL.md