Code & QA Zone: Tutorials, Tools, Guides & Tips for Developers & Testers

Rest Api

Top Free Public APIs for Your Next Project (2026)

One of the smartest ways to speed up project development is by using Free APIs. APIs are essenti ...

Add Swagger UI to Nodejs Express REST API: Simple Setup Guide

Efficient QA and front-end integration depend on a strong API documentation. For developers working ...

What Is cURL and How Does It Work with APIs

I wanted to share something about this tool because, although it’s incredibly useful, many people in ...

JWT Essentials: A Beginner’s Guide for Developers & QAs

JWT authentication and session authentication are two common methods to a ...

JSON Essentials: Key Concepts and Usage Explained

In modern software development, applications constantly exchange data between clients and servers. F ...

API Testing Starter Kit: Free Guides + Templates

As part of the REST API Testing series for QAs, here’s a practical **API Testing Starter Kit ...

How to Build a REST API Testing Strategy: Step-by-Step Guide

Testing REST APIs is much more than just sending requests and checking responses. To build resilient ...

HTTP Status Codes Explained for API Testing

In this post, we’ll explore HTTP status codes in API testing, explain what they mean, highlight ...

When to Use GET, POST, PUT, DELETE, and PATCH in REST APIs

In this post, we'll learn when and why to use the most common HTTP methods in REST APIs. These a ...

Breaking Down HTTP API Requests: What QA Engineers Need to Know

In this post, we’ll explore API HTTP requests and explain how they work from a QA engineer’s per ...

Understanding REST API Basics: Why QA Engineers Should Care

Nowadays, REST APIs are a key part of modern web and mobile applications. For QA engineers, understa ...