Certified API Testing Professional

Certified API Testing Professional tutorials and preparatory guide

Want to become a API Testing Professional? Do you have the aspirations to advance your career prospects? Then you are exactly at the right place. API testing is a type of software testing that involves testing application programming interfaces (APIs) directly and as part of integration testing to determine if they meet expectations for functionality, reliability, performance, and security. The demand for Certified API Testing Professional in the recent years given increasing competition. Organisations require the best applications to thrive well in todays business environment. API’s have become vital tools for businesses across every industry segment. Hence earning a professional certification will open new opportunities in your career.

Roles and Responsibilities of a Certified API Testing Professional

A Certified API Testing Professional plays a key role in today’s organisations. They know how to interact with backend services (APIs) and have a good understanding of how they are used and related. Moreover, they check the functionality, reliability, performance, and security of the programming interfaces. They must have strong knowledge of various testing methods like Regression and Functional testing. Their responsibilities include:

  • Firstly, they should ensure the APIs work as expected
  • Then, they must specify and ensure the application can handle the desired load
  • Further, establish the APIs work seamlessly through the operating systems and devices
  • Also, ensure the data that passes through the API is in lieu of compliance & security
  • Moreover, make sure all the business rules have been correctly implemented at the API level
  • Furthermore, enable a better user experience
  • Additionally, ensure easier expansion of applications
  • Lastly, make sure the API provides the required functionality

Vskills Certified API Testing Professional Overview

Vskills Certification validates your expertise as per the industry standards. It assess you in various areas of web technology, software testing topics, API and API testing basics, REST API, API test design, API test execution, API testing tools, java API testing, PHP API testing, python API testing, advanced API testing. This certification is best suited for professionals who want to work in software testing or application development departments of various companies. Also, it is intended for candidate who wish to excel in their chosen field.

Benefits of this certification

The last few years have seen an exponential increase in the development and use of web-based APIs. Therefore in this modern world of applications, API testing is an important part of the process. API testing increases the quality of the end-product, and ensures that the foundation of multiple applications is functionally correct at the earliest stages of development. Becoming a Certified API Testing Professional will help you grab higher paying jobs and will most definitely  broaden your employment opportunities.

Vskills is India’s largest certification provider and gives candidates access to top exams as well as offers after exam benefits. This includes:

  • Become a Government Certified Professional
  • Also, the Certification will have lifetime validity.
  • Get Lifelong e-learning access.
  • Get access to Practice Tests and Sample Papers.
  • Get tagged as ‘Vskills Certified’ on Top Job Portals – Monsterindia.com and Shine.com.

Exam Details

  • Exam Code: VS-1580
  • Duration: 60 minutes
  • No. of questions: 50
  • Maximum marks: 50
  • Passing marks: 25 (50%).
  • There is NO negative marking
  • This is an Online exam

Exam Process

certified API Testing Professional exam process

Course Outline: Certified API Testing Professional

This exam covers the following topics:

Web Technology Basics

  • Web Application
  • HTML
  • CSS
  • JavaScript
  • Document Object Model (DOM)
  • XPath
  • Popular Web Browsers
  • Inspecting Elements in Browser

Software Testing Topics

  • Scope
  • Functional vs. Non-Functional testing
  • Defects and Failures
  • Finding Faults Early
  • Compatibility
  • Input Combinations and Preconditions
  • Static vs. Dynamic Testing
  • Software Verification and Validation
  • The Software Testing Team
  • Software Quality Assurance (SQA)
  • Testing Methods – The box approach

API and API Testing Basics

  • API Concepts
  • API in Detail
  • Web APIs
  • Use of APIs to Share Content
  • API Implementations
  • API Release Policies
  • Language Bindings and Interface Generators
  • API Testing
  • API Testing Test Cases
  • SOAP Introduction
  • REST Introduction
  • Web Service
  • Web API


  • REST Basics
  • REST Guiding Principles
  • REST Architectural Elements
  • HTTP Methods for RESTful Services
  • RESTful Resource Naming
  • REST Request Anatomy

API Test Design

  • Test Design
  • API Testing Challenges
  • API Testing Requirements Gathering
  • API Testing Requirement Gathering Process

API Test Execution

  • Implementing API Testing
  • API Unit Testing
  • Integration Testing
  • Testing Artifacts
  • API Testing and Defects
  • Example – HTTP API Testing

API Testing Tools

  • Postman
  • SoapUI

Java API Testing

  • REST-Assured
  • Jmeter

PHP API Testing

  • PHPUnit

python API Testing

  • Pytest

Advanced API Testing

  • E2E API Testing
  • CI with Jenkins

Preparatory Guide: Certified API Testing Professional

While preparing for any certification exam, it should be very clear to a candidate where to begin. Therefore, we have curated a list of all the learning resources which will help you clear this certification exam with flying colours. Follow our step by step Preparatory Guide and achieve this much valued credential.

Certified API Testing Professional preparatory guide

Step 1- Review the Exam Objectives

Firstly, you should start with the exam objectives. The exam course outline includes various topics and sub topics that are covered in the exam. Familiarising with the exam domains will help you align your study plan. Devoting enough time to each domain is a must while preparing for this exam. The exam objectives are:

  • Web Technology Basics
  • Software Testing Topics
  • API and API Testing Basics
  • API Test Design
  • API Test Execution
  • API Testing Tools
  • Java API Testing
  • PHP API Testing
  • python API Testing
  • Advanced API Testing

Step 2- Explore learning resources

Passing the exam can be easy if you choose the right set of resources for yourself. Make sure the content is precise and reliable enough. The resources that you’ll pick will determine how well you prepare and pass the exam. So, you need to be very careful while choosing the learning resources. There are numerous resources which you can choose from. Vskills offers you its E-Learning Study Material to provide you with a stronger base that will help you qualify the exam. This online learning material is available for lifetime and is updated regularly. Moreover, these e-learning resources also come with hard copy study material that supplement your learning

Step 3- Study with Books

Preparing with books has been the traditional way. They are the go-to resource for any exam. These Books help you gain in-depth clarity about the exam domains. Most important of all, you can find real-time examples of the different concepts you learn for this certification exam. As a result, you can strengthen your knowledge about the application of these concepts. In addition, books are also useful for cross-referencing and verifying the authenticity of the information from other learning resources. We suggest you to include the following books in your preparation journey:

  • Automating and Testing a REST API by Alan J Richardson
  • Api Testing: A Reference for the Rest of Us by Gerard Blokdyk
  • Developer Testing: Building Quality Into Software by Alexander Tarnowski

Step 4- Practice Tests are your way ahead

Mistakes are inevitable, but surely, they can be limited. When it comes to exams, practice papers help a lot in limiting the mistakes. Moreover, practice papers give that simulation in which the brain needs to get used to the actual exam. Other than knowledge, there are many factors that can affect your performance in the exam. Thus, going through practice tests helps you find your strengths and iron out your weaknesses. They make you understand the areas you’re lacking behind and work upon them. Most importantly, make sure that you are going through practice tests once you have gone through the whole syllabus. Moreover, attempting multiple practice tests will boost your confidence. Get Ready to Self Evaluate your preparations with Practice Tests!

Certified API Testing Professional free practice tests
Upgrade your knowledge and enhance your skills with Certified API Testing Professional exam. Start your preparation Now!

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