api-design-expert

Design RESTful APIs with OpenAPI documentation and DTO validation for NestJS applications.

2|1|Updated Apr 4, 2026

Search Tags:#versioning #openapi #swagger #error-handling #nestjs #api-design #dto-validation

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npx skills add https://github.com/genfeedai/genfeed.ai --skill api-design-expert-genfeedai

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Skill: api-design-expert
Source: https://github.com/genfeedai/genfeed.ai/tree/main/.agents/skills/api-design-expert
Command: npx skills add https://github.com/genfeedai/genfeed.ai --skill api-design-expert-genfeedai

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

REST API design, standardization, and OpenAPI documentation for NestJS apps to improve consistency and maintainability.

Core Features & Use Cases

RESTful API design guidance for NestJS controllers and routes
OpenAPI/Swagger documentation generation and integration
Versioning strategies, error handling patterns, and DTO validation

Quick Start

Provide a complete REST API design plan and OpenAPI spec for a NestJS project.

Frequently Asked Questions about api-design-expert

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

FAQPage Schema

How do I design and document REST APIs in NestJS?▼

To design REST APIs in NestJS, you should structure controllers and routes using best practices, then generate OpenAPI/Swagger documentation automatically from your code to ensure consistency and maintainability across your application.

What is the best way to configure OpenAPI Swagger documentation for a NestJS project?▼

Configuring OpenAPI Swagger in NestJS involves integrating the Swagger module to automatically generate API documentation. This provides a consistent OpenAPI spec directly from your controllers and DTOs, simplifying API consumption and testing.

How do I handle error responses and DTO validation in NestJS?▼

Error responses and DTO validation in NestJS are handled by integrating validation pipelines within your Data Transfer Objects. This ensures a consistent error handling format and automatically rejects malformed incoming request payloads.

Does NestJS support API versioning strategies for RESTful endpoints?▼

NestJS supports API versioning strategies for RESTful endpoints, allowing you to manage breaking changes effectively. You can implement versioning within your controllers to maintain backward compatibility while evolving your API design.

How do I structure pagination and nested resources for a NestJS REST API?▼

Structuring pagination and nested resources in a NestJS REST API involves defining specific DTOs for query parameters and establishing clear route hierarchies. This ensures efficient data retrieval and organized relationships between parent and child resources.

Why is standardizing REST API design important for NestJS applications?▼

Standardizing REST API design in NestJS applications is important because it improves consistency and maintainability. A unified approach to routing, DTO validation, and OpenAPI documentation reduces integration friction and long-term technical debt.