New cohorts enrolling monthly — onsite, online & hybrid formats. Modern SQA Formula Bootcamp 2026 Registration ongoing Corporate teams: ask about custom bootcamp pricing.
Beginner tester tracing HTTP requests responses authentication and API error cases
SQA, Test Automation & SDET · Course #007

Introduction to API Testing

Introduction to API Testing focuses on the full working context behind the topic: api purpose and architecture, http essentials and reading api documentation and identifying testable behaviour. Participants learn to inspect HTTP-based APIs, design useful request variations and evaluate responses without depending on a graphical user interface while accounting for product risk, maintainability and collaboration. Participants read simple API documentation, send requests in a safe client, validate status, headers and payloads, explore authentication concepts and test errors, boundaries and state changes. Guided reviews help learners identify fragile assumptions, improve their evidence and choose proportionate techniques. They gain a solid vocabulary and a small, evidence-based API test set that prepares them for Postman, automation, contract and security testing courses.

Enroll Interest Back to Courses

Overview

Introduction to API Testing focuses on the full working context behind the topic: api purpose and architecture, http essentials and reading api documentation and identifying testable behaviour. Participants learn to inspect HTTP-based APIs, design useful request variations and evaluate responses without depending on a graphical user interface while accounting for product risk, maintainability and collaboration. Participants read simple API documentation, send requests in a safe client, validate status, headers and payloads, explore authentication concepts and test errors, boundaries and state changes. Guided reviews help learners identify fragile assumptions, improve their evidence and choose proportionate techniques. They gain a solid vocabulary and a small, evidence-based API test set that prepares them for Postman, automation, contract and security testing courses.

Course Highlights

HTTP and REST foundations

Requests, responses and payloads

Positive and negative API checks

Authentication and state concepts

Clear API test evidence

Modules & Curriculum

API purpose and architecture: clients, services and integrations

HTTP essentials: methods, URLs, headers and status codes

Reading API documentation and identifying testable behaviour

Building requests: parameters, payloads and content types

Validating responses: schema shape, values, headers and timing

Authentication and authorisation concepts for testers

Negative testing: invalid data, missing fields and error contracts

State and workflow testing across related requests

API defect reporting and next steps into automation

Learning Outcomes

  • Explain how clients, endpoints, methods and resources interact.
  • Construct requests using parameters, headers and payloads.
  • Validate status codes, response bodies, headers and timing.
  • Design negative, boundary and state-transition API tests.
  • Record API defects with request and response evidence.

Ready to Build Your Future-Ready Skills?

Learn to test services directly and find issues hidden behind the interface.

Enroll Interest

Related Courses

Beginner Junior QA learners mapping assurance activities across a software delivery lifecycle

Software Quality Assurance (SQA) Fundamentals

View Course
Beginner Software team tracing requirements through development testing release and maintenance stages

Software Development Life Cycle (SDLC)

View Course
Beginner QA trainees organising test planning execution defect tracking and closure artefacts

Software Testing Life Cycle (STLC)

View Course