Api Development

What it does

This skill provides expert guidance and assistance for developing APIs using Go and NestJS with TypeScript. It focuses on best practices, code standards, and architectural patterns to create robust and maintainable API solutions. The skill covers core principles of Go API development including HTTP handling, error management, input validation, and middleware implementation, alongside clean coding guidelines for NestJS APIs.

When to use it

• When designing a new REST API using Go or NestJS.
• To ensure adherence to best practices in Go API development (e.g., proper status code usage).
• For guidance on structuring NestJS applications with modular architecture and DTOs.
• To improve the quality and maintainability of existing Go or NestJS APIs.

Key capabilities

• Expert advice on Go API development using the standard library (net/http).
• Guidance on HTTP method handling, error handling, input validation, and middleware implementation in Go.
• Best practices for building clean NestJS APIs with TypeScript.
• Recommendations for code standards including naming conventions (PascalCase, camelCase, SCREAMING_SNAKE_CASE).
• Advice on modular architecture within NestJS applications.
• Guidance on using DTOs and validation decorators in NestJS.

Example prompts

• "How should I handle errors when building a Go API?"
• "What are the best practices for routing in Go with net/http?"
• "Can you give me an example of how to implement middleware for authentication in a NestJS application?"
• “What is the recommended approach to input validation in my NestJS API?”

Tips & gotchas

• The skill assumes familiarity with Go and NestJS fundamentals.
• It emphasizes using the latest stable versions of Go (1.22+) and strict TypeScript compiler options.
• Focus on leveraging the standard library in Go before introducing external dependencies.