API Testing Is the Skill Every QA Team Is Hiring For — and Supply Can't Keep Up. Here's How You Master It.
From Postman basics to REST Assured automation, contract testing with Pact, gRPC testing, AI-powered generation, OWASP security, and k6 performance — the complete API QA stack.
Syllabus
Modules
HTTP & HTTPS Internals
API Architectures
gRPC Deep Dive
Modules
Postman 101
Authentication Methods
Postman Scripts & Assertions
Request Chaining
Swagger / OpenAPI Spec
Error Resilience Testing
Mock Servers
Milestone Lab
Modules
Framework Setup (REST Assured)
Design Patterns
Serialization (POJO / Interface)
Schema Validation
Contract Testing with Pact
Data-Driven Testing (I)
Data-Driven Testing (II)
GraphQL Auto
Interception & Mocking
Logging & Reporting — Allure
Milestone Lab 2
Modules
MCP for APIs
Autonomous Test Generation
AI Fuzzing & Security Payloads
Prompt Engineering for API Test Design
AI Contract & Documentation Generation
Modules
OWASP API Top 10 — Part 1
OWASP API Top 10 — Part 2
Modules
Performance Testing — k6 + Gatling
Spike, Soak & Memory Leak Testing
Modules
Capstone: AI-Powered API Security Suite + Demo
Outcome
By the end of this course, you will be able to:
- Validate API requests, responses, status codes, and data accuracy using Postman
- Implement authentication testing — Basic, Bearer token, OAuth 2.0, and API keys
- Build a REST Assured automation framework with data-driven tests and schema validation
- Test GraphQL APIs and intercept network requests for validation
- Apply OWASP API Top 10 security testing techniques including mass assignment attacks
- Run API performance and load tests using k6 and JMeter
- Use AI to generate test data, validate contracts, and detect performance anomalies
- Integrate your API test suite into CI/CD pipelines with Docker execution
- Implement consumer-driven contract testing with Pact to prevent breaking changes in microservices.
- Test gRPC APIs including unary and streaming RPCs using Protocol Buffers.
- Run automated OWASP API security scans using ZAP integrated into your CI pipeline.
- Career roles you'll be ready for: API Test Automation Engineer, SDET (API/Backend), API Security Tester.
Tools
Postman
REST Assured
k6
JMeter
Pact
OWASP ZAP
WireMock
Docker
GitHub Actions
Jenkins
GitHub Copilot
Who Should Enrol
Manual tester →
Move from clicking through UI tests to testing the APIs underneath them.
Automation engineer →
Add REST Assured and contract testing to what you already know.
Backend developer →
Add the QA and security testing discipline most backend teams skip.
QA with Postman skills →
Level up from manual checks to automation, contract testing, and security.
Market Growth
FAQs
A structured 7-phase programme that takes you from HTTP fundamentals to building a production-ready REST Assured framework — including AI-powered test generation, OWASP API security testing, and performance testing with k6 and JMeter. By the end, you will know how to test any API your team ships.
This course is ideal for:
Manual testers who want to move into API testing and automation
QA engineers and test automation professionals
Developers who want to validate APIs effectively
Fresh graduates interested in software testing careers
No advanced programming background is required going in — Phases 1 and 2 build the fundamentals you need before REST Assured shows up in Phase 3.
You will gain hands-on experience with tools such as:
Postman, REST Assured (Java) , Pact (contract testing), k6 + JMeter + Gatling (performance), OWASP ZAP (security), WireMock (mocking), Docker, GitHub Actions, and AI-powered generation via Claude/Copilot and Keploy.
Yes. The course includes milestone labs at the end of each phase, plus a capstone project where you build a full REST Assured framework with CI/CD integration, and an OWASP security testing lab. These projects are portfolio-ready and can be shared with employers.
Yes. The course is structured as a progression —Phase 2 covers manual testing in Postman in depth (scripts, assertions, chaining), and Phase 3 moves into REST Assured automation in Java. By the end you’ll be comfortable in both tools and know when to use each.