nestjs-modules-services-controllers

Design and standardize NestJS modules, services, and controllers in TypeScript.

2|Updated Dec 5, 2025

Search Tags:#typescript #api #backend #modules #controllers #nestjs #services

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npx skills add https://github.com/AgentiveCity/SkillFactory --skill nestjs-modules-services-controllers

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Please help me install this Agent Skill.
Skill: nestjs-modules-services-controllers
Source: https://github.com/AgentiveCity/SkillFactory/tree/main/.claude/skills/nestjs-modules-services-controllers
Command: npx skills add https://github.com/AgentiveCity/SkillFactory --skill nestjs-modules-services-controllers

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Designing, creating, and refactoring NestJS modules, services, and controllers to follow clean architecture, DI best practices, and consistent API patterns can be complex, especially in larger projects. This Skill automates the structuring of application features, ensuring consistency, maintainability, and testability.

Core Features & Use Cases

Automated Feature Module Creation: Generate new feature modules (e.g., users, auth, posts) with their respective services, controllers, and DTOs.
Clean Architecture Refactoring: Reorganize existing monolithic modules into a clean, scalable structure with clear service APIs and domain boundaries.
Consistent API Patterns: Implement RESTful or RPC-like controllers with standardized HTTP endpoints, DTOs, and error handling.

Quick Start

Generate a users module with CRUD endpoints and DTOs, and split this app module into distinct users, posts, and comments modules.

Frequently Asked Questions about nestjs-modules-services-controllers

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

FAQPage Schema

How do I organize NestJS modules and services in a clean architecture?▼

Clean architecture in NestJS organizes features into separate modules, each containing a service for business logic, a controller for HTTP endpoints, and DTOs for validation. This structure separates concerns, improves testability, and scales as your API grows by keeping domain boundaries clear and dependencies injected through NestJS's built-in container.

What's the best way to structure a TypeScript backend with NestJS controllers and services?▼

Structure your TypeScript backend under src/modules with feature-first organization: each module (users, posts, auth) contains a controller handling HTTP requests, a service encapsulating business logic, and DTOs defining request/response shapes. This pattern follows RESTful conventions, centralizes validation, and makes dependency injection straightforward across your API.

Can I refactor an existing monolithic NestJS app into separate feature modules?▼

Yes. Refactoring into separate feature modules involves extracting domain logic into dedicated services, grouping related controllers under module boundaries, defining DTOs for each feature's inputs and outputs, and reorganizing code under src/modules. NestJS's module system and dependency injection make splitting a monolith into clean, testable features straightforward.

How do I implement RESTful API patterns consistently across NestJS controllers?▼

Implement consistent RESTful patterns by standardizing HTTP methods (GET, POST, PUT, DELETE) in controllers, using DTOs to validate incoming requests, returning predictable response shapes, and handling errors uniformly across endpoints. NestJS controllers decorated with @Controller map routes, while services injected via dependency injection handle the actual logic.

What role do DTOs play in NestJS module design?▼

DTOs (Data Transfer Objects) define the shape and validation rules for data entering and leaving your API endpoints. In modular NestJS design, each feature module defines its own DTOs, which controllers use to validate requests before passing data to services. This ensures type safety, consistent validation, and clear API contracts.

Do I need to follow a specific naming convention for NestJS modules and services?▼

Consistent naming conventions improve readability and maintainability. NestJS modules typically follow feature names (users, auth, posts), services append .service.ts, controllers append .controller.ts, and DTOs append .dto.ts. This standardization, combined with src/modules organization, makes the codebase predictable and easier to navigate as it grows.