API Learning

11 Best API Documentation Tools for 2026

Effective API documentation is crucial for developers and users to understand, adopt, and implement APIs successfully. This overview highlights seven top API documentation tools in 2026, each offering unique features to streamline the documentation process.

How secure is Claude Code when processing proprietary code?

Claude Code, powered by advanced AI, is rapidly changing how developers write, analyze, and debug code. But when it comes to proprietary code, security becomes paramount. How can you ensure your valuable intellectual property remains protected while leveraging the power of AI? This article dives deep into Claude Code'

How to Fix 401 Unauthorized Error

The 401 Unauthorized error is an HTTP status code that signifies a failure in the authentication process. This error occurs when the server receives a request without valid authentication credentials, or the credentials provided are incorrect or insufficient.

How to Fix "Status Code 407 Proxy Authentication Required" Error

The HTTP 407 error, known as "Proxy Authentication Required," is an HTTP status code indicating a client must authenticate with a proxy server before accessing the requested resource.

The Ultimate Guide to Understanding API Status Codes

An API status code is a three-digit number sent from the server in response to a request made to an API. These codes are a standard part of the HTTP protocol and are used to indicate whether the request was successful, encountered an error, or requires further action.

Walmart API | How to Use Walmart API?

The Walmart API is a powerful tool that enables developers to interact with one of the largest retail giants in the world. The API provides access to a variety of functionalities, including product searches, inventory management, and order processing.

API Observability: Pillars, Benefits & Use Cases

API observability is the practice of monitoring and understanding the internal state of your APIs. Observability involves collecting and analyzing data from various sources, such as logs, metrics, and traces, to comprehensively view your API's behavior.

How to Install Postman on Ubuntu Using Snap/Flathub

Are you looking to install Postman on Ubuntu? This guide will walk you through the steps to install Postman on Ubuntu using two popular methods: Snap and Flathub.

Test Scenario vs Test Case: the Key Differences

When it comes to software testing, the terms test scenario and test case are often used interchangeably. This post will explore the key differences between a test scenario and a test case.

API Payload: Definition, Importance, Types and Best Practices

APIs are vital for modern web development, enabling communication between software applications. This article delves into API payloads, their importance, types, and best practices for handling them.

How to Add Bearer Token Authorization in Postman

In Postman, you can use a Bearer Token for authorization by including it in the "Authorization" header of your HTTP request.

React Fetch vs Axios: Comparing HTTP Request Libraries in React

Fetch is a native JS interface for HTTP requests supported by modern browsers. Axios is a more full-featured third-party library requiring installation. Axios provides richer features like automatic JSON parsing, error handling, interceptors.

12 Best UI Automation Testing Tools

In this article, we will explore the significance of the 12 best UI automation testing tools, their features, and the benefits they bring.

How to Call the Twitter API with Python

Twitter, one of the leading social media platforms, provides a powerful API that allows developers to access a wealth of information. In this comprehensive guide, we'll walk you through the step-by-step process of calling the Twitter API using Python.

Why Programmers Hate Writing API Documentation and How to Solve It?

API documentation is crucial in software development but often faces reluctance from programmers due to various challenges. Apidog, an all-in-one API development tool, integrates essential functionalities for API documentation to solve this problem,.

Curl -o Command in Linux

Curl is a linchpin for transferring data between local and remote systems. This post will provide a concise exploration of the "curl -o" command in Linux.

Test Cases for API Testing with Example

As APIs grow in usage and complexity, properly testing them is crucial for delivering high-quality applications. This article will explore API testing and provide examples of effective API test cases.

Socket. IO vs. WebSocket: Keys Differences

Two popular technologies that facilitate real-time communication are Socket.IO and WebSocket. In this article, we'll dive deep into Socket.IO and WebSocket, exploring their key differences, use cases, and advantages.

How to Send POST XML with Postman

In this article, we will explore the process of sending POST requests with XML data using Postman. We'll walk you through the steps to effectively send XML data to a web service or API, making it simple and easy to work with this common data format.

Postman vs Swagger: The Key Differences You Should Know

This article explores the key features and limitations of Postman and Swagger and recommends why Apidog is the superior API documentation tool.

Postman Tutorial: How to Use Postman Online for API Testing

This post will explore the convenience of the Postman Online Version and learn how to test API using it step by step.

An Ultimate Guide to HTTP POST Request Method

In a POST request, data is sent within the request body, allowing for the transmission of information such as form submissions, file uploads, or API interactions.

API Performance Testing: A Complete Guide

This post will explore the concept of API performance testing, different types of API performance testing, and effective tools to perform it.

What is Swagger | Swagger Tutorial for Beginners

Swagger is an open-source API design and documentation tool that helps developers design, build, document, and test RESTful APIs faster and more easily.

HTTP DELETE Request with Body

The HTTP specification explicitly states that the DELETE method does not expect a request body. While other HTTP methods like POST and PUT often include a request body to send data to the server, the DELETE method is intended solely for resource deletion.

How to Call REST API with cURL

cURL is a useful command-line tool for calling REST APIs directly from your terminal or in scripts and automation. In this guide, we'll cover the basics of using cURL to call with REST APIs. What is a cURL API Call?

11 Best Open-Source API Documentation Tools

Explore the power of open-source API documentation generators. From Swagger to Apidog, these API documentation generators are tools that automatically generate documentation for API.

How to Convert XML Schema(XSD) to JSON Schema

XML Schema is used to define the structure and data types of XML documents, while JSON Schema is used to define the structure and validation of JSON data.

How to Convert XML to JSON: A Step-by-Step Guide

Converting XML (eXtensible Markup Language) to JSON (JavaScript Object Notation) is a common task in web development and data interchange.

How to Get Streaming Requests with Axios (2 Best Ways)

Axios is a popular HTTP client library for making requests in JavaScript. It provides two effective methods to implement streaming requests and continuously gets server responses. Check it now.

SSL Certificate - Signature Verification Failure Vulnerability

The SSL certificate signature verification failed vulnerability refers to a security issue where the digital signature of an SSL certificate cannot be successfully verified.

How to Use Curl -v Command, A Complete Guide

curl is a powerful command-line tool for HTTP requests, supporting various protocols. The -v option activates verbose mode, revealing detailed communication logs between the client and server.

What is cURL Command and How Does it Work?

What is cURL in API? "Curl" stands for "Client for URLs" and is a command-line tool and library for transferring data with URLs. It is widely used for making HTTP requests to interact with web APIs.

WebSocket Tutorial: Test WebSocket Connection Using Curl

In this section, we will explore how to use curl, a command-line tool for making HTTP requests, to establish a WebSocket connection, and communicate with a WebSocket server.

Top 10 Online API Testing Tools | Test APIs Online

To help you make the best choice for your API testing needs, we've compiled a list of the top 10 online API testing tools. These tools are not only powerful but also cost-effective, making them ideal for both small startups and large enterprises.

How to Send gRPC Request with Postman

gRPC is a high-performance, open-source remote procedure call (RPC) framework that supports multiple programming languages. This article will guide you on how to send gRPC requests in Postman.

What is Form-Data Content-Type

Form-data is one of the formats for data sent from a web form. Specifically, it encodes values entered into a form as name-value pairs and sends them with the Content-Type header set to multipart/form-data.

What Are API Cookies? How to Send it?

If you've ever wondered what API cookies are and how to send and manage them effectively, you're in the right place. In this comprehensive guide, we will delve into the world of API cookies, exploring their definition, and purpose.

How to Import JSON Files into Postman

Now, let's see how Apidog and Postman handle importing JSON files to find the best fit for your needs.

How to Generate API Documentation from Swagger Automatically

In this post, we will provide you with a comprehensive guide on how to generate Swagger documentation for your API. Additionally, we will introduce a valuable tool called Apidog that can help streamline the documentation process.

How to Make DELETE Requests with Axios

Axios is a popular HTTP request library that can send asynchronous requests in both browser and Node.js environments. This article will focus on how to use Axios for DELETE requests and explore different ways of passing parameters.

Postman Tutorial: How to Generate Bearer Token in Postman

In today's tutorial, we will delve into the intricacies of setting up tokens in Postman, a crucial step in enhancing the security and consistency of your API interactions.

How to Make Axios GET Request Easily

Axios is a JavaScript HTTP client library that is widely used for making API requests when working with JavaScript. In this article, we will provide a detailed introduction to Axios and then show you how to implement GET requests using Axios.

How to Create and Run a WebSocket Server in Python

This article is the ultimate guide on how to create a WebSocket Server in Python and debug it with Apidog easily.

How to Make POST Requests with Axios

Axios stands out as a valuable JavaScript HTTP client library, particularly in facilitating seamless communication with APIs. Given that the POST method is extensively employed in HTTP transactions, mastering its implementation in Axios becomes crucial.

How to Call REST API in Node.JS

In this guide, we'll explore the different methods for calling REST APIs from Node.js applications. We'll go over core concepts, show example code snippets, and provide best practices for working with REST APIs in your Node.js projects.

How to Send Query Parameters in POST Request

Learn the simple and effective way to send query parameters in a POST request with our step-by-step guide. Master the art of sending data efficiently!

How to Send Axios PUT Request

Axios can handle various HTTP methods, including GET, POST, and PUT. In this text, we will focus on the PUT method and introduce how to make PUT requests with Axios.

Sending SOAP Requests with Postman

SOAP is an XML-based communication protocol used for exchanging structured data on the web. This comprehensive article will guide you step-by-step on how to efficiently send SOAP requests using Postman.

How to Send JSON Object with POST Request

In API testing and development, sending POST requests with JSON data is a fundamental skill. A detailed guide is provided for crafting POST requests with JSON payloads within the user-friendly interfaces of both Postman and Apidog.

How to Use Insomnia to Test API

Insomnia is a popular open-source API client that allows developers to easily test and interact with APIs. In this post, we'll dive into what Insomnia is, why developers use it, and how to get started.

How to Generate Bearer Token

Bearer tokens are commonly used in the OAuth 2.0 authentication framework. In this article, we'll explore the process of generating a Bearer token and provide a practical example using GitHub as a reference.

How to Issue and Run HTTPS Requests in Postman

You can use Postman to send requests to web servers using the HTTPS protocol for secure communication. Here are the detailed steps to do it.

How to Add Bearer Token Authorization in Swagger

Bearer token authentication is a common authentication method used to protect access to APIs. Adding a Bearer token to Swagger increases API security and restricts access to protected resources to users with valid access tokens.

How to Set Up Selenium for API Testing(A Step-by-Step )

Ensuring the reliability and functionality of APIs is crucial, and that's where Selenium, a popular tool in the realm of web automation testing, can be a game-changer for API testing as well.

HTTP Request Parameters in REST API

Request parameters allow you to pass data to an API endpoint when making a request. They are an important part of designing and using REST APIs.

How to Install and Run cURL Command on Windows/Mac

Running cURL commands on Windows and Mac is common for network requests and data transfer. This powerful tool supports various protocols. For Windows, install cURL and use it in Command Prompt or PowerShell. On Mac, use the pre-installed cURL in Terminal for seamless operations.

How to Add and Pass Bearer Token in Header

When calling an API that uses bearer token auth, you need to properly format and send the header to pass the token to the API. Here are the steps to set the Authorization header with a bearer token in Apidog.

How to Send JSON Data in Postman

We will delve into the topic of sending JSON data using Postman, a powerful tool for API testing and development. Whether you're a seasoned developer or a newbie, mastering this skill is essential for efficient API testing and development.

How to Export Swagger Documentation to PDF Files

You may find yourself in a situation where you need to export Swagger documentation into PDF or files for convenient sharing and archiving. In this blog post, we will guide you through the process of exporting Swagger documentation into both PDF formats.

How to Use Multithreading in FastAPI?

This article will explore the usage of multi-threading in the FastAPI framework, covering common use cases, problem-solving approaches, and practical examples.

Curl -x Command with Example

The term "curl X" typically refers to using the command-line tool "curl" with the "-X" option to specify the HTTP request method. The "curl" command is a widely used tool for making HTTP requests from the command line.

Postman Tutorial: Export Postman Collections Data

Some developers also switch to another free alternative to Postman. This post focuses on how to export your data, including collections, environments, global variables, and data dumps, in JSON format from Postman.

Best OpenAPI Validator Tools

OpenAPI validator helps ensure the validity and correctness of OpenAPI specifications, preventing errors, inconsistencies, and compliance issues. In this article, we will delve into the world of OpenAPI validators.

How to Use Assert in Node.js

By incorporating assertion statements into their code and writing tests using the assert() function, developers can validate assumptions, detect errors, and improve the quality of their Node.js applications.

How to Use the Event Loop in Node.js?

In this article, we'll take a deep dive into how the event loop works, providing common usage scenarios and methods, as well as practical examples to demonstrate how to effectively utilize the event loop in Node.js.

Online SOAP API Tester

This article explores the pivotal role of online SOAP API testing tools in optimizing the testing process, enabling developers and testers to achieve superior results efficiently.

Curl -i Command

The -i option in the Curl command is a gateway to detailed information about the HTTP response headers. By using this option, users can gain a deeper understanding of the server's response and extract crucial metadata from the HTTP headers.

What is the Difference between anyof and oneof

In Z Schema, specifically in the context of JSON schema validation, "anyOf" and "oneOf" are keywords used to define conditional validation logic.

Curl -h Command

One of the most essential options in the curl toolkit is the -h option, which enables users to manipulate and inspect HTTP headers.

curl -u Command

The curl command, a versatile tool for making HTTP requests, offers the -u option to simplify the process of including user credentials in your requests. In this article, we'll explore the curl -u command, its syntax, and how it enhances the efficiency of handling authentication.

Curl Command: How to Use Curl-D Option

The '-d' option in the Curl command is used to send data as part of an HTTP POST request. This option allows users to include specific data in the body of the request, enabling the transmission of information to a web server.

How to Use Curl Command in Linux

In this guide, we delve into the intricacies of the curl command, exploring its syntax, options, and practical examples that showcase its versatility in Linux environments. What Is the curl Command?

SOAP vs REST: What is the Key Differences

SOAP and Rest API have their pros and cons, and knowing the differences between them can help developers and architects determine which architecture to use when building their web-based APIs.

SOAP Tutorial: What Is SOAP Basics

SOAP (Simple Object Access Protocol) is an XML-based protocol used for message exchange over the web. This guide is suitable for beginners.

Swagger Editor Tutorial for Beginners

The Swagger Editor is a specialized integrated development environment (IDE) crafted for the creation and management of APIs. It operates primarily with Swagger/OpenAPI specifications, providing developers with a dedicated space for designing, refining, and documenting APIs.

What is Swagger Codegen

Swagger Codegen is an open-source tool designed for code generation during API development.

How to Send a Curl DELETE Request

Curl can be used to send various types of requests like GET, POST, PUT, DELETE etc. In this article, we will see how to send a DELETE request using cURL.

Top 12 cURL Commands with Examples

cURL offers powerful features for HTTP/HTTPS requests. Ideal for automation, these commands facilitate user authentication, proxy support, and more. This guide will help you learn how to use various options with curl commands.

WebSocket Protocol (An Ultimate Guide)

WebSocket is a protocol used to create real-time, bi-directional communication channels in web applications. In this article, we will give an all-around overview of the WebSocket protocol definition, the WebSocket usage situation, and the full process of WebSocket connection.

How to Use Query Parameters in React Router?

In this guide, we will explore the seamless integration of query parameters within React Router. Learn how to efficiently pass and retrieve query parameters in both React Router v5 and the latest version, React Router v6.

How to Mock an API for Testing

Master the art of mock API creation for seamless testing workflows. This guide covers API types, best practices, and a step-by-step setup using Apidog.

CRUD vs. REST: What’s the Difference?

CRUD and REST, often confused, represent key concepts in the API domain. While REST is a popular design style for web APIs, CRUD simply refers to fundamental database operations: Create, Read, Update, and Delete. This article explores the overlap between CRUD and REST.

API Assertions: Ensuring Integration and Performance

Developers define statements or conditions called API assertions to verify an API's functionality. These assertions are checkpoints throughout testing to ensure the API fulfills requirements and operates as intended.

What is X www form URL-encoded Requests

Unlocking the intricacies of data transmission, we delve into the realm of "X www form URL-encoded Requests." In this article, we unravel the significance and application of this encoding method, shedding light on its role in secure and efficient data exchange over the web.

What is Bearer Token and How it Works?

What is Bearer Token? A complete explanation of its details! There are many API authentication methods over HTTP. Bearer Token is one of the most commonly used. In this article, Bearer Token will be fully explained to you.

XML vs JSON: A Comprehensive Comparison of Differences

XML (eXtensible Markup Language) and JSON (JavaScript Object Notation) are both data interchange formats, but they have some key differences. Here are the main distinctions between XML and JSON.

How to Use Talend API Tester: A Comprehensive Guide with Examples

Talend API Tester, formerly known as Restlet Client, is a powerful tool for API testing that can help you validate RESTful APIs or web services easily.

How to Send Authorization Header with Axios

When working with Axios to make HTTP requests, adding an authorization header is a common requirement, especially when dealing with secure endpoints that require authentication. However, sending such headers in cross-origin requests may lead to complications.

What is HTTP Content-Type

Content-Type is essential in HTTP communication to specify the type of data being sent. This article introduces fundamental information about Content-Type, detailing its types and how to specify them when sending requests.

Webhooks vs API: Exploring the Differences

Webhooks and APIs differ in their communication models, with APIs relying on request-response interactions for bidirectional data flow, while webhooks operate in an event-driven manner, providing real-time updates with unidirectional data flow triggered by specific events.

How to Export Insomnia Collection

Insomnia, an open-source desktop application by Kong, stands out as a powerful ally for API design, debugging, and testing. To make the most of your work and ensure seamless collaboration, it's essential to understand how to export Insomnia collections.

How to Use JSON Web Token (JWT) in Node.js

JSON Web Token (JWT) is an open standard that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This article will provide a quick overview of how JWTs work.

How to Install Django REST Framework

Django Rest Framework (DRF) is a powerful and flexible toolkit for building Web APIs in Django. Here is a step-by-step guide on how to install and configure DRF in your Django project.

How to Test Django REST Framework

Testing is a crucial aspect of web development, ensuring that your Django Rest Framework (DRF) API functions correctly and efficiently. In this guide, we'll walk you through a step-by-step process on how to test Django Rest Framework, covering unit tests, integration tests with Apidog, and more.

What is the Difference between Django and Django REST Framework?

This is where Django Rest Framework (DRF) steps in, adding a layer of specialization for creating RESTful APIs. In this tutorial, we'll explore the distinctions between Django and Django Rest Framework to guide you in choosing the right tool for your web development endeavors.

API Calls: What is an API Call and How to Make it

What is an API Call? An API call refers to the process of a computer program or application making a request to an external service or server, typically through an API (Application Programming Interface).

Best 2 Ways to Build API in node.JS and Express

Node.js is the top choice for developers creating fast web apps with RESTful APIs, widely used in the US. We'll take you through the top two approaches, providing valuable insights and practical guidance on harnessing the power of Node.js and Express to craft efficient and scalable APIs.

How to Create JSON Schema in Python

Python offers several libraries and tools for working with JSON schemas, but one of the most popular choices is the "jsonschema" library. In this guide, we will use this library to create JSON schemas in Python.

How to Send HTTP/2 Request?

In this blog, we'll guide you through the correct way to send HTTP/2 requests, addressing the common misconceptions and challenges you might encounter along the way.