Course

Complete API Testing — Manual, Automation, GraphQL & AI

A complete API Test Engineer program: HTTP/REST fundamentals, manual testing with Postman, authentication & security testing, automation with RestAssured (Java) and Karate (low-code BDD), GraphQL & gRPC testing, contract testing with Pact/WireMock, API performance basics, CI/CD integration, and AI-augmented test generation — choose from 6 flexible packages, each with mock-interview checkpoints and full career-launch support.

⏱ 12 Weeks 🖥 Online 💻 4 Projects ⭐ 4.8/5
INCLUDED AT NO COST

Everything below is included at no extra cost

🚀 FREE!
Live Project(s)
💼 FREE!
Job Reference(s)
🎓 FREE!
Career Guidance
♾️ FREE!
Life Time Support
PACKAGES

We Offer Responsive Packages With An Unexplored Syllabus

No coding needed
⏱ 4.5 Weeks
★ 4.7/5

API Testing Foundations

Manual API testing with Postman, auth flows and security basics — no prior coding needed.
  • API & HTTP Fundamentals
  • Manual API Testing with Postman
  • API Authentication & Security Testing
  • Comprehensive Interview Prep & Career Launch
Postman, JWT tools
View Curriculum →
Most enrolled
⏱ 5.5 Weeks
★ 4.9/5

API Automation with RestAssured

Java-based API automation — the most widely hired API automation stack.
  • Manual Foundations Recap
  • API Automation with RestAssured
  • CI/CD for API Test Automation
  • Comprehensive Interview Prep & Career Launch
Java, RestAssured, TestNG, Maven
View Curriculum →
Fastest on-ramp
⏱ 4.5 Weeks
★ 4.8/5

API Automation with Karate

BDD-style, low-code API automation — the fastest on-ramp from manual to automated testing.
  • Manual Foundations Recap
  • API Automation with Karate
  • CI/CD Basics
  • Comprehensive Interview Prep & Career Launch
Karate DSL, Gherkin, Maven
View Curriculum →
Only at Fourcup
⏱ 4.5 Weeks
★ 4.8/5

Modern API Testing — GraphQL, Contract & AI

GraphQL, gRPC, contract testing, AI-augmented test generation and API-level accessibility — what most catalogues skip entirely.
  • GraphQL & gRPC API Testing
  • Contract Testing & Service Virtualization
  • AI-Augmented API Test Generation
  • API Performance Basics
  • Accessibility Testing at the API Layer
  • Comprehensive Interview Prep & Career Launch
GraphQL, Pact, WireMock, k6, axe-core, ChatGPT/Claude
View Curriculum →
Flagship
⏱ 13 Weeks
★ 4.9/5

Complete API Testing Flagship Program

Every module — manual, RestAssured, Karate, GraphQL, contract testing, AI and accessibility — the full API Test Engineer path.
  • All 11 core modules, start to finish
  • Manual + 2 automation stacks (RestAssured & Karate)
  • GraphQL, gRPC, Contract Testing & AI
  • Accessibility Testing at the API Layer
  • Comprehensive Interview Prep & Career Launch
Postman, Java, RestAssured, Karate, GraphQL, Pact, WireMock, k6, axe-core, Newman, JIRA
View Curriculum →
Customized
⏱ Custom
★ 4.8/5

Build Your Own (Customized)

Pick exactly the modules you need from the full API testing module bank, priced and scheduled to match.
  • Choose any modules from the shared bank
  • Custom duration & pricing
  • Same trainers, same mock-interview access
  • Comprehensive Interview Prep & Career Launch included
Selected per module
View Curriculum →
LEARNING OUTCOMES

What you will be able to do

Concrete skills, not topic names — each one is something you can show an interviewer.

🎯

Design test cases that find real defects

Boundary values, equivalence classes and edge cases — not just happy-path coverage.

🧪

Automate with a real framework

Page Object Model, reusable helpers and a suite you can actually maintain.

📊

Read a defect report the way a developer will

Reproduction steps, severity and evidence — reports that get fixed, not ignored.

🔧

Build and maintain a test suite

Structure tests so they survive the product changing under them.

🔗

Test APIs, not just interfaces

Postman and REST Assured, including auth flows most courses skip.

📈

Run suites in a CI pipeline

Jenkins and GitHub Actions — tests that run on every commit automatically.

SUCCESS STORIES

Our Students Excelling Worldwide

“
Harini Balasubramanian H
Harini Balasubramanian
API Test Engineer
🏢 Freshworks
★★★★★

“Went from barely knowing what a status code meant to writing a full RestAssured suite with authentication and contract tests against Pact and WireMock. The progression from manual Postman collections to real automation felt natural, not rushed. Freshworks tested me on exactly this kind of layered API coverage.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Rohit Chandrasekaran R
Rohit Chandrasekaran
QA Engineer
🏢 Wipro
★★★★★

“I don't come from a coding background, so Karate DSL was the module that made API automation click for me — low-code BDD-style syntax that still produces a real, CI-runnable suite. Wipro's panel was genuinely surprised a non-developer could speak to automation this confidently.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Anitha Ravichandran A
Anitha Ravichandran
Automation Test Engineer
🏢 EPAM Systems
★★★★★

“GraphQL testing was the gap in my resume and the reason I kept losing out on product-company interviews. This course closed it, along with WireMock for service virtualization when a dependent service isn't available yet. EPAM's stack is GraphQL-heavy, so this was the difference-maker.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Suresh Kumar Pillai S
Suresh Kumar Pillai
SDET
🏢 IBM India
★★★★ ★

“The k6 module for API performance basics was a nice addition most "API testing" courses skip entirely — usually that's treated as a separate specialization. Combined with GitHub Actions for CI, I walked in able to say I'd covered functional, contract, and basic performance testing on the same API.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Lavanya Srinivasan L
Lavanya Srinivasan
Associate QA Engineer
🏢 Sonata Software
★★★★★

“The AI-augmented module — generating a first-draft test suite straight from an OpenAPI spec and then correcting it — saved me real time on my capstone project and taught me to review AI output critically instead of trusting it blindly. That's a skill Sonata specifically asked about in my interview.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
TOOLS & SKILLS

Tools and skills covered

Java
Selenium
TestNG
Postman
Git
Jenkins
JMeter
SQL
🏆

Certificate of Completion

Awarded once every module and project is complete — recognised by our hiring partners.

IS THIS FOR YOU?

Who this course is for

If none of these describe you, tell us — we will point you at a better fit rather than sell you this one.

🎓

Freshers from any engineering branch

🔁

Manual testers hitting the automation ceiling

💻

Support engineers moving into QA

WHY IN FOURCUP?

Software Testing Program

Practical exposure to actual work environment

Work on live, under-construction projects with the exposure of an actual work environment, alongside a freelancer.

Dynamic syllabus structure

Built with multiple industry experts, so students become genuinely fluent in the subject rather than exam-ready.

Expert teachers who are active practitioners too

Mentors bring real industry experience and share their ups, downs and delivery skills, not just slides.

GET STARTED

Get Started Today

01
Download our Syllabus and review it thoroughly.
02
Request Call Back / Apply the Enquiry Form.
03
Join Our Free Demo Class.
04
Understand the Opportunity.
05
Join the Training session and become an expert!
CURRICULUM

Module by module

Open any module to see exactly what it covers. Nothing is hidden behind a "download the syllabus" form.

4.5 Weeks
DURATION
4
MODULES
4
REAL-TIME PROJECTS
5
MOCK INTERVIEWS
No coding needed

API Testing Foundations

⏱ 4.5 Weeks ★ 4.7
4 modules
Most enrolled

API Automation with RestAssured

⏱ 5.5 Weeks ★ 4.9
5 modules
Fastest on-ramp

API Automation with Karate

⏱ 4.5 Weeks ★ 4.8
5 modules
Only at Fourcup

Modern API Testing — GraphQL, Contract & AI

⏱ 4.5 Weeks ★ 4.8
6 modules
Flagship

Complete API Testing Flagship Program

⏱ 13 Weeks ★ 4.9
12 modules
Customized

Build Your Own (Customized)

⏱ Custom ★ 4.8
0 modules
1 API & HTTP Fundamentals 1 wk ▾
TopicWhat You'll Learn
1. Client-Server Architecture & the HTTP Protocol Request/response cycle, headers, status codes, and how a browser's Network tab already shows you every API call a page makes.
2. REST Principles Resources, endpoints, path vs. query parameters, idempotency, and what actually makes an API "RESTful" versus just JSON-over-HTTP.
3. Request & Response Data Modelling Reading and validating JSON/XML payloads, nested structures, and array responses.
4. API Documentation Reading a Swagger/OpenAPI spec and a Postman public collection to understand an API before you write a single test.
4.1) Real-world starting point Most testers don't get a spec, they get a working frontend and a Network tab. Reverse-engineering an API's contract from observed traffic is its own skill.
2 Manual API Testing with Postman 1.5 wks ▾
TopicWhat You'll Learn
1. Building Requests & Collections Organizing a real project's worth of endpoints into folders that make sense to a teammate six months later.
2. Environments & Variables Switching between dev/QA/staging without editing every request by hand.
3. Postman Test Scripts & Assertions pm.test(), status code checks, response-time checks, and schema validation.
4. Chaining Requests Extracting a value from one response (an ID, a token) and feeding it into the next request automatically.
5. Mock Servers & Postman Flows Testing against an endpoint that doesn't exist yet, and visual request chaining for non-technical stakeholders.
6. 🚀 Mock Interview Checkpoint Manual API testing: request/response validation, status codes, and "walk me through how you'd test this endpoint" live questions.
3 API Authentication & Security Testing 1 wk ▾
TopicWhat You'll Learn
1. Authentication Flows API keys, Basic Auth, Bearer tokens, and OAuth2 (Authorization Code, Client Credentials) end to end in Postman.
2. JWT Decoding a JSON Web Token, verifying claims and expiry, and what happens when you tamper with one.
3. Authorization Testing Verifying one user genuinely cannot access another user's data (IDOR), not just that login works.
4. API Security Basics Rate limiting, CORS misconfiguration, sensitive data exposure in responses, and input validation/injection checks at the API layer.
4.1) Why this module exists Most beginner courses treat auth as "paste the token in." Real interviews and real bugs live in what happens when the token is wrong, expired, or belongs to someone else.
4 Comprehensive Interview Preparation & Career Launch 1 wk ▾
TopicWhat You'll Learn
1. API Testing Interview Question Bank Manual, RestAssured, Karate, GraphQL and security questions asked in real interviews, reviewed and explained.
2. Resume & LinkedIn Building for API/SDET Roles Framing API automation projects the way a hiring manager actually scans a resume.
3. Live Mock Interviews with Feedback Recorded, one-on-one mock interviews with a working API test engineer, with specific, actionable feedback.
4. Whiteboard-Style "Design a Test Strategy for This API" Rounds Practising the system-level question that trips up otherwise-strong candidates.
5. Salary Negotiation & Offer Evaluation Reading an offer letter and negotiating from an informed position.
6. Placement Assistance Referrals and interview opportunities where available, resume review, and continued mentor access after the course ends. Placement assistance is support, not a guarantee of a job or a specific salary — see full terms.
7. 🚀 Final Mock Interview A full-length, role-realistic API Test Engineer interview, end to end.
1 API & HTTP Fundamentals 0.5 wk ▾
TopicWhat You'll Learn
1. Client-Server Architecture & the HTTP Protocol Request/response cycle, headers, status codes, and how a browser's Network tab already shows you every API call a page makes.
2. REST Principles Resources, endpoints, path vs. query parameters, idempotency, and what actually makes an API "RESTful" versus just JSON-over-HTTP.
3. Request & Response Data Modelling Reading and validating JSON/XML payloads, nested structures, and array responses.
4. API Documentation Reading a Swagger/OpenAPI spec and a Postman public collection to understand an API before you write a single test.
4.1) Real-world starting point Most testers don't get a spec, they get a working frontend and a Network tab. Reverse-engineering an API's contract from observed traffic is its own skill.
2 Manual API Testing with Postman 1 wk ▾
TopicWhat You'll Learn
1. Building Requests & Collections Organizing a real project's worth of endpoints into folders that make sense to a teammate six months later.
2. Environments & Variables Switching between dev/QA/staging without editing every request by hand.
3. Postman Test Scripts & Assertions pm.test(), status code checks, response-time checks, and schema validation.
4. Chaining Requests Extracting a value from one response (an ID, a token) and feeding it into the next request automatically.
5. Mock Servers & Postman Flows Testing against an endpoint that doesn't exist yet, and visual request chaining for non-technical stakeholders.
6. 🚀 Mock Interview Checkpoint Manual API testing: request/response validation, status codes, and "walk me through how you'd test this endpoint" live questions.
3 API Automation with RestAssured (Java) 2 wks ▾
TopicWhat You'll Learn
1. RestAssured Fundamentals given()/when()/then() syntax, and setting up a Java project for API automation.
2. GET, POST, PUT, PATCH, DELETE Automating the full CRUD cycle with request/response specifications you can reuse across a suite.
3. JSON Path & Response Extraction Pulling a value out of a response to chain into the next call, and validating deeply nested arrays.
4. Serialization & POJO Classes Mapping requests/responses to Java objects instead of hand-building JSON strings.
5. TestNG Integration Grouping, data providers and parallel execution for a large API regression suite.
6. Integrating with the UI Automation Framework Running API and Selenium/Playwright tests from the same suite and CI pipeline.
4 CI/CD for API Test Automation 1 wk ▾
TopicWhat You'll Learn
1. Running API Suites in CI Triggering RestAssured/Karate suites from Jenkins or GitHub Actions on every commit.
2. Newman Running Postman collections from the command line for quick regression checks without opening the app.
3. Reporting in CI Extent/Allure reports wired into a pipeline so a failure is visible without re-running locally.
4. Git & GitHub for API Test Code Branching, pull requests and resolving conflicts in test code without losing anyone's work.
5 Comprehensive Interview Preparation & Career Launch 1 wk ▾
TopicWhat You'll Learn
1. API Testing Interview Question Bank Manual, RestAssured, Karate, GraphQL and security questions asked in real interviews, reviewed and explained.
2. Resume & LinkedIn Building for API/SDET Roles Framing API automation projects the way a hiring manager actually scans a resume.
3. Live Mock Interviews with Feedback Recorded, one-on-one mock interviews with a working API test engineer, with specific, actionable feedback.
4. Whiteboard-Style "Design a Test Strategy for This API" Rounds Practising the system-level question that trips up otherwise-strong candidates.
5. Salary Negotiation & Offer Evaluation Reading an offer letter and negotiating from an informed position.
6. Placement Assistance Referrals and interview opportunities where available, resume review, and continued mentor access after the course ends. Placement assistance is support, not a guarantee of a job or a specific salary — see full terms.
7. 🚀 Final Mock Interview A full-length, role-realistic API Test Engineer interview, end to end.
1 API & HTTP Fundamentals 0.5 wk ▾
TopicWhat You'll Learn
1. Client-Server Architecture & the HTTP Protocol Request/response cycle, headers, status codes, and how a browser's Network tab already shows you every API call a page makes.
2. REST Principles Resources, endpoints, path vs. query parameters, idempotency, and what actually makes an API "RESTful" versus just JSON-over-HTTP.
3. Request & Response Data Modelling Reading and validating JSON/XML payloads, nested structures, and array responses.
4. API Documentation Reading a Swagger/OpenAPI spec and a Postman public collection to understand an API before you write a single test.
4.1) Real-world starting point Most testers don't get a spec, they get a working frontend and a Network tab. Reverse-engineering an API's contract from observed traffic is its own skill.
2 Manual API Testing with Postman 1 wk ▾
TopicWhat You'll Learn
1. Building Requests & Collections Organizing a real project's worth of endpoints into folders that make sense to a teammate six months later.
2. Environments & Variables Switching between dev/QA/staging without editing every request by hand.
3. Postman Test Scripts & Assertions pm.test(), status code checks, response-time checks, and schema validation.
4. Chaining Requests Extracting a value from one response (an ID, a token) and feeding it into the next request automatically.
5. Mock Servers & Postman Flows Testing against an endpoint that doesn't exist yet, and visual request chaining for non-technical stakeholders.
6. 🚀 Mock Interview Checkpoint Manual API testing: request/response validation, status codes, and "walk me through how you'd test this endpoint" live questions.
3 API Automation with Karate (BDD, Low-Code) 1.5 wks ▾
TopicWhat You'll Learn
1. Karate DSL Fundamentals Gherkin-style syntax that reads like plain English while still being a full automation framework.
2. Writing Karate Feature Files Requests, assertions and JSON matching without writing Java boilerplate for every call.
3. Data-Driven Testing in Karate Scenario Outlines and Examples tables for running the same flow across many data sets.
4. Karate for API + UI in One Framework Karate's built-in UI automation layer, and when a team chooses it over separate tools.
5. Parallel Execution & Native Reporting Karate's built-in parallel runner and HTML reports, no extra plugins required.
5.1) Why this module exists Karate is what many product teams hand to manual testers moving into automation, precisely because it doesn't require Java first — a genuinely different on-ramp from RestAssured.
4 CI/CD for API Test Automation 0.5 wk ▾
TopicWhat You'll Learn
1. Running API Suites in CI Triggering RestAssured/Karate suites from Jenkins or GitHub Actions on every commit.
2. Newman Running Postman collections from the command line for quick regression checks without opening the app.
3. Reporting in CI Extent/Allure reports wired into a pipeline so a failure is visible without re-running locally.
4. Git & GitHub for API Test Code Branching, pull requests and resolving conflicts in test code without losing anyone's work.
5 Comprehensive Interview Preparation & Career Launch 1 wk ▾
TopicWhat You'll Learn
1. API Testing Interview Question Bank Manual, RestAssured, Karate, GraphQL and security questions asked in real interviews, reviewed and explained.
2. Resume & LinkedIn Building for API/SDET Roles Framing API automation projects the way a hiring manager actually scans a resume.
3. Live Mock Interviews with Feedback Recorded, one-on-one mock interviews with a working API test engineer, with specific, actionable feedback.
4. Whiteboard-Style "Design a Test Strategy for This API" Rounds Practising the system-level question that trips up otherwise-strong candidates.
5. Salary Negotiation & Offer Evaluation Reading an offer letter and negotiating from an informed position.
6. Placement Assistance Referrals and interview opportunities where available, resume review, and continued mentor access after the course ends. Placement assistance is support, not a guarantee of a job or a specific salary — see full terms.
7. 🚀 Final Mock Interview A full-length, role-realistic API Test Engineer interview, end to end.
1 GraphQL & gRPC API Testing 1 wk ▾
TopicWhat You'll Learn
1. GraphQL Fundamentals Queries, mutations, schemas and resolvers, and how testing a single flexible endpoint differs from testing many REST endpoints.
2. Testing GraphQL with Postman & Automation Validating query shape, variables, fragments, and over/under-fetching bugs unique to GraphQL.
3. gRPC & Protocol Buffers What gRPC is, why it's used for internal microservice-to-microservice calls, and testing it with a gRPC client.
3.1) Where this shows up in real jobs Modern microservice backends increasingly mix REST (public API), GraphQL (frontend-facing) and gRPC (internal) — a tester who can only test REST is testing a shrinking slice of the system.
2 Contract Testing & Service Virtualization 1 wk ▾
TopicWhat You'll Learn
1. Why Contract Testing Exists Catching a breaking API change before it reaches a consumer team, instead of after a production incident.
2. Consumer-Driven Contract Testing with Pact Writing a consumer contract and verifying a provider against it in CI.
3. Service Virtualization with WireMock Stubbing a dependency that's slow, unstable, or owned by another team, so your suite isn't blocked by theirs.
3.1) Why this module exists Almost no competing API-testing catalogue teaches contract testing at all, despite it being exactly what modern microservice teams ask about in interviews once a candidate claims "API automation" experience.
3 AI-Augmented API Test Generation 1 wk ▾
TopicWhat You'll Learn
1. Generating Test Cases from an OpenAPI/Swagger Spec with AI Turning a spec into a first-draft test suite in minutes, then reviewing it like an editor.
2. AI-Assisted Test Data Generation Realistic, varied payloads and edge-value sets without leaking real user data.
3. Using AI to Explain and Triage API Failures Turning a raw stack trace or failed assertion into a clear root-cause hypothesis faster.
3.1) Where AI gets it wrong Hallucinated endpoints and false-confidence assertions — treating AI output as a first draft that still needs a tester's judgement, the same discipline taught across every Fourcup AI-augmented module.
4 API Performance & Load Testing Basics 0.5 wk ▾
TopicWhat You'll Learn
1. Why API Performance Testing Is Different Testing a single endpoint's behaviour under concurrent load, not a full user journey.
2. Load Testing an API with k6 Writing a basic load test script and reading throughput, latency and error-rate results.
3. Identifying Slow Endpoints Spotting an N+1 query or an unindexed lookup from response-time data alone.
5 Accessibility Testing at the API Layer 0.5 wk ▾
TopicWhat You'll Learn
1. Why Accessibility Starts Before the UI ARIA metadata, alt-text fields and language tags often originate in API responses, so validating them early catches accessibility bugs before they ever reach the frontend.
2. Automated Accessibility Scanning with axe-core Running axe-core against pages driven by real API data, and reading a violation report the way a 2026 QA team is expected to.
3. WCAG Conformance Checks in the Regression Suite Wiring WCAG 2.2 AA success criteria into an existing automated suite instead of treating accessibility as a one-off manual audit.
4. Validating Accessibility-Related Response Fields Checking that alt-text, ARIA-label and language-tag fields are present and non-empty in payloads that feed accessible UI components.
4.1) Why this module exists Accessibility testing has moved from optional to expected in 2026 hiring, and most API-testing catalogues still treat it as a UI-only discipline — this module builds the habit of catching it at the source.
6 Comprehensive Interview Preparation & Career Launch 0.5 wk ▾
TopicWhat You'll Learn
1. API Testing Interview Question Bank Manual, RestAssured, Karate, GraphQL and security questions asked in real interviews, reviewed and explained.
2. Resume & LinkedIn Building for API/SDET Roles Framing API automation projects the way a hiring manager actually scans a resume.
3. Live Mock Interviews with Feedback Recorded, one-on-one mock interviews with a working API test engineer, with specific, actionable feedback.
4. Whiteboard-Style "Design a Test Strategy for This API" Rounds Practising the system-level question that trips up otherwise-strong candidates.
5. Salary Negotiation & Offer Evaluation Reading an offer letter and negotiating from an informed position.
6. Placement Assistance Referrals and interview opportunities where available, resume review, and continued mentor access after the course ends. Placement assistance is support, not a guarantee of a job or a specific salary — see full terms.
7. 🚀 Final Mock Interview A full-length, role-realistic API Test Engineer interview, end to end.
1 API & HTTP Fundamentals 1 wk ▾
TopicWhat You'll Learn
1. Client-Server Architecture & the HTTP Protocol Request/response cycle, headers, status codes, and how a browser's Network tab already shows you every API call a page makes.
2. REST Principles Resources, endpoints, path vs. query parameters, idempotency, and what actually makes an API "RESTful" versus just JSON-over-HTTP.
3. Request & Response Data Modelling Reading and validating JSON/XML payloads, nested structures, and array responses.
4. API Documentation Reading a Swagger/OpenAPI spec and a Postman public collection to understand an API before you write a single test.
4.1) Real-world starting point Most testers don't get a spec, they get a working frontend and a Network tab. Reverse-engineering an API's contract from observed traffic is its own skill.
2 Manual API Testing with Postman 1.5 wks ▾
TopicWhat You'll Learn
1. Building Requests & Collections Organizing a real project's worth of endpoints into folders that make sense to a teammate six months later.
2. Environments & Variables Switching between dev/QA/staging without editing every request by hand.
3. Postman Test Scripts & Assertions pm.test(), status code checks, response-time checks, and schema validation.
4. Chaining Requests Extracting a value from one response (an ID, a token) and feeding it into the next request automatically.
5. Mock Servers & Postman Flows Testing against an endpoint that doesn't exist yet, and visual request chaining for non-technical stakeholders.
6. 🚀 Mock Interview Checkpoint Manual API testing: request/response validation, status codes, and "walk me through how you'd test this endpoint" live questions.
3 API Authentication & Security Testing 1 wk ▾
TopicWhat You'll Learn
1. Authentication Flows API keys, Basic Auth, Bearer tokens, and OAuth2 (Authorization Code, Client Credentials) end to end in Postman.
2. JWT Decoding a JSON Web Token, verifying claims and expiry, and what happens when you tamper with one.
3. Authorization Testing Verifying one user genuinely cannot access another user's data (IDOR), not just that login works.
4. API Security Basics Rate limiting, CORS misconfiguration, sensitive data exposure in responses, and input validation/injection checks at the API layer.
4.1) Why this module exists Most beginner courses treat auth as "paste the token in." Real interviews and real bugs live in what happens when the token is wrong, expired, or belongs to someone else.
4 API Automation with RestAssured (Java) 2 wks ▾
TopicWhat You'll Learn
1. RestAssured Fundamentals given()/when()/then() syntax, and setting up a Java project for API automation.
2. GET, POST, PUT, PATCH, DELETE Automating the full CRUD cycle with request/response specifications you can reuse across a suite.
3. JSON Path & Response Extraction Pulling a value out of a response to chain into the next call, and validating deeply nested arrays.
4. Serialization & POJO Classes Mapping requests/responses to Java objects instead of hand-building JSON strings.
5. TestNG Integration Grouping, data providers and parallel execution for a large API regression suite.
6. Integrating with the UI Automation Framework Running API and Selenium/Playwright tests from the same suite and CI pipeline.
5 API Automation with Karate (BDD, Low-Code) 1.5 wks ▾
TopicWhat You'll Learn
1. Karate DSL Fundamentals Gherkin-style syntax that reads like plain English while still being a full automation framework.
2. Writing Karate Feature Files Requests, assertions and JSON matching without writing Java boilerplate for every call.
3. Data-Driven Testing in Karate Scenario Outlines and Examples tables for running the same flow across many data sets.
4. Karate for API + UI in One Framework Karate's built-in UI automation layer, and when a team chooses it over separate tools.
5. Parallel Execution & Native Reporting Karate's built-in parallel runner and HTML reports, no extra plugins required.
5.1) Why this module exists Karate is what many product teams hand to manual testers moving into automation, precisely because it doesn't require Java first — a genuinely different on-ramp from RestAssured.
6 GraphQL & gRPC API Testing 1 wk ▾
TopicWhat You'll Learn
1. GraphQL Fundamentals Queries, mutations, schemas and resolvers, and how testing a single flexible endpoint differs from testing many REST endpoints.
2. Testing GraphQL with Postman & Automation Validating query shape, variables, fragments, and over/under-fetching bugs unique to GraphQL.
3. gRPC & Protocol Buffers What gRPC is, why it's used for internal microservice-to-microservice calls, and testing it with a gRPC client.
3.1) Where this shows up in real jobs Modern microservice backends increasingly mix REST (public API), GraphQL (frontend-facing) and gRPC (internal) — a tester who can only test REST is testing a shrinking slice of the system.
7 Contract Testing & Service Virtualization 1 wk ▾
TopicWhat You'll Learn
1. Why Contract Testing Exists Catching a breaking API change before it reaches a consumer team, instead of after a production incident.
2. Consumer-Driven Contract Testing with Pact Writing a consumer contract and verifying a provider against it in CI.
3. Service Virtualization with WireMock Stubbing a dependency that's slow, unstable, or owned by another team, so your suite isn't blocked by theirs.
3.1) Why this module exists Almost no competing API-testing catalogue teaches contract testing at all, despite it being exactly what modern microservice teams ask about in interviews once a candidate claims "API automation" experience.
8 AI-Augmented API Test Generation 1 wk ▾
TopicWhat You'll Learn
1. Generating Test Cases from an OpenAPI/Swagger Spec with AI Turning a spec into a first-draft test suite in minutes, then reviewing it like an editor.
2. AI-Assisted Test Data Generation Realistic, varied payloads and edge-value sets without leaking real user data.
3. Using AI to Explain and Triage API Failures Turning a raw stack trace or failed assertion into a clear root-cause hypothesis faster.
3.1) Where AI gets it wrong Hallucinated endpoints and false-confidence assertions — treating AI output as a first draft that still needs a tester's judgement, the same discipline taught across every Fourcup AI-augmented module.
9 API Performance & Load Testing Basics 0.5 wk ▾
TopicWhat You'll Learn
1. Why API Performance Testing Is Different Testing a single endpoint's behaviour under concurrent load, not a full user journey.
2. Load Testing an API with k6 Writing a basic load test script and reading throughput, latency and error-rate results.
3. Identifying Slow Endpoints Spotting an N+1 query or an unindexed lookup from response-time data alone.
10 Accessibility Testing at the API Layer 0.5 wk ▾
TopicWhat You'll Learn
1. Why Accessibility Starts Before the UI ARIA metadata, alt-text fields and language tags often originate in API responses, so validating them early catches accessibility bugs before they ever reach the frontend.
2. Automated Accessibility Scanning with axe-core Running axe-core against pages driven by real API data, and reading a violation report the way a 2026 QA team is expected to.
3. WCAG Conformance Checks in the Regression Suite Wiring WCAG 2.2 AA success criteria into an existing automated suite instead of treating accessibility as a one-off manual audit.
4. Validating Accessibility-Related Response Fields Checking that alt-text, ARIA-label and language-tag fields are present and non-empty in payloads that feed accessible UI components.
4.1) Why this module exists Accessibility testing has moved from optional to expected in 2026 hiring, and most API-testing catalogues still treat it as a UI-only discipline — this module builds the habit of catching it at the source.
11 CI/CD for API Test Automation 1 wk ▾
TopicWhat You'll Learn
1. Running API Suites in CI Triggering RestAssured/Karate suites from Jenkins or GitHub Actions on every commit.
2. Newman Running Postman collections from the command line for quick regression checks without opening the app.
3. Reporting in CI Extent/Allure reports wired into a pipeline so a failure is visible without re-running locally.
4. Git & GitHub for API Test Code Branching, pull requests and resolving conflicts in test code without losing anyone's work.
12 Comprehensive Interview Preparation & Career Launch 1 wk ▾
TopicWhat You'll Learn
1. API Testing Interview Question Bank Manual, RestAssured, Karate, GraphQL and security questions asked in real interviews, reviewed and explained.
2. Resume & LinkedIn Building for API/SDET Roles Framing API automation projects the way a hiring manager actually scans a resume.
3. Live Mock Interviews with Feedback Recorded, one-on-one mock interviews with a working API test engineer, with specific, actionable feedback.
4. Whiteboard-Style "Design a Test Strategy for This API" Rounds Practising the system-level question that trips up otherwise-strong candidates.
5. Salary Negotiation & Offer Evaluation Reading an offer letter and negotiating from an informed position.
6. Placement Assistance Referrals and interview opportunities where available, resume review, and continued mentor access after the course ends. Placement assistance is support, not a guarantee of a job or a specific salary — see full terms.
7. 🚀 Final Mock Interview A full-length, role-realistic API Test Engineer interview, end to end.

The curriculum for this package has not been added yet.

WHAT YOU GET

This Course Includes

💻

Online

🎯

12 Weeks Duration (Flexible)

🖥

4 Real Industry Projects

🏆

Certificate on Completion

♾️

Lifetime Access to Recordings

💼

Job References to 50+ Companies

🎯

5 Mock Interview Rounds

🗣

Soft Skills & Communication

📱

WhatsApp Batch Support

📥

Brochure & Syllabus Download

🛠 Tools Covered:
PostmanNewmanJavaRestAssuredTestNGMavenKarate DSLGraphQLPactWireMockk6JenkinsGitHub ActionsGit & GitHubJIRAChatGPT/Claude
SUCCESS STORIES

Our Students Excelling Worldwide

“
Harini Balasubramanian H
Harini Balasubramanian
API Test Engineer
🏢 Freshworks
★★★★★

“Went from barely knowing what a status code meant to writing a full RestAssured suite with authentication and contract tests against Pact and WireMock. The progression from manual Postman collections to real automation felt natural, not rushed. Freshworks tested me on exactly this kind of layered API coverage.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Rohit Chandrasekaran R
Rohit Chandrasekaran
QA Engineer
🏢 Wipro
★★★★★

“I don't come from a coding background, so Karate DSL was the module that made API automation click for me — low-code BDD-style syntax that still produces a real, CI-runnable suite. Wipro's panel was genuinely surprised a non-developer could speak to automation this confidently.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Anitha Ravichandran A
Anitha Ravichandran
Automation Test Engineer
🏢 EPAM Systems
★★★★★

“GraphQL testing was the gap in my resume and the reason I kept losing out on product-company interviews. This course closed it, along with WireMock for service virtualization when a dependent service isn't available yet. EPAM's stack is GraphQL-heavy, so this was the difference-maker.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Suresh Kumar Pillai S
Suresh Kumar Pillai
SDET
🏢 IBM India
★★★★ ★

“The k6 module for API performance basics was a nice addition most "API testing" courses skip entirely — usually that's treated as a separate specialization. Combined with GitHub Actions for CI, I walked in able to say I'd covered functional, contract, and basic performance testing on the same API.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Lavanya Srinivasan L
Lavanya Srinivasan
Associate QA Engineer
🏢 Sonata Software
★★★★★

“The AI-augmented module — generating a first-draft test suite straight from an OpenAPI spec and then correcting it — saved me real time on my capstone project and taught me to review AI output critically instead of trusting it blindly. That's a skill Sonata specifically asked about in my interview.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
YOUR MENTOR

Who teaches this course

Sessions are taught by someone who does this work, not by a full-time trainer reading slides.

👨‍🏫

Fourcup API Testing Faculty

Real Industry Trainers, Not Just Instructors

Every Fourcup trainer has a minimum of 8+ years of total IT industry experience and 5+ years of specific, hands-on experience in the exact tool or domain they teach. They are currently working professionals — the frameworks, edge cases and interview questions taught are what's actually used in live projects today. Mock-interview mentors are the same trainers who conduct real technical interviews at their day jobs.

8+ years experience Active practitioner
SUCCESS STORIES

Our Students Excelling Worldwide

“
Harini Balasubramanian H
Harini Balasubramanian
API Test Engineer
🏢 Freshworks
★★★★★

“Went from barely knowing what a status code meant to writing a full RestAssured suite with authentication and contract tests against Pact and WireMock. The progression from manual Postman collections to real automation felt natural, not rushed. Freshworks tested me on exactly this kind of layered API coverage.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Rohit Chandrasekaran R
Rohit Chandrasekaran
QA Engineer
🏢 Wipro
★★★★★

“I don't come from a coding background, so Karate DSL was the module that made API automation click for me — low-code BDD-style syntax that still produces a real, CI-runnable suite. Wipro's panel was genuinely surprised a non-developer could speak to automation this confidently.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Anitha Ravichandran A
Anitha Ravichandran
Automation Test Engineer
🏢 EPAM Systems
★★★★★

“GraphQL testing was the gap in my resume and the reason I kept losing out on product-company interviews. This course closed it, along with WireMock for service virtualization when a dependent service isn't available yet. EPAM's stack is GraphQL-heavy, so this was the difference-maker.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Suresh Kumar Pillai S
Suresh Kumar Pillai
SDET
🏢 IBM India
★★★★ ★

“The k6 module for API performance basics was a nice addition most "API testing" courses skip entirely — usually that's treated as a separate specialization. Combined with GitHub Actions for CI, I walked in able to say I'd covered functional, contract, and basic performance testing on the same API.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Lavanya Srinivasan L
Lavanya Srinivasan
Associate QA Engineer
🏢 Sonata Software
★★★★★

“The AI-augmented module — generating a first-draft test suite straight from an OpenAPI spec and then correcting it — saved me real time on my capstone project and taught me to review AI output critically instead of trusting it blindly. That's a skill Sonata specifically asked about in my interview.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
BATCHES

When you can start

Weekday, weekend and fast-track options. Seats are limited so sessions stay small enough to ask questions in.

Batch dates for this course have not been added yet.

SUCCESS STORIES

Our Students Excelling Worldwide

“
Harini Balasubramanian H
Harini Balasubramanian
API Test Engineer
🏢 Freshworks
★★★★★

“Went from barely knowing what a status code meant to writing a full RestAssured suite with authentication and contract tests against Pact and WireMock. The progression from manual Postman collections to real automation felt natural, not rushed. Freshworks tested me on exactly this kind of layered API coverage.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Rohit Chandrasekaran R
Rohit Chandrasekaran
QA Engineer
🏢 Wipro
★★★★★

“I don't come from a coding background, so Karate DSL was the module that made API automation click for me — low-code BDD-style syntax that still produces a real, CI-runnable suite. Wipro's panel was genuinely surprised a non-developer could speak to automation this confidently.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Anitha Ravichandran A
Anitha Ravichandran
Automation Test Engineer
🏢 EPAM Systems
★★★★★

“GraphQL testing was the gap in my resume and the reason I kept losing out on product-company interviews. This course closed it, along with WireMock for service virtualization when a dependent service isn't available yet. EPAM's stack is GraphQL-heavy, so this was the difference-maker.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Suresh Kumar Pillai S
Suresh Kumar Pillai
SDET
🏢 IBM India
★★★★ ★

“The k6 module for API performance basics was a nice addition most "API testing" courses skip entirely — usually that's treated as a separate specialization. Combined with GitHub Actions for CI, I walked in able to say I'd covered functional, contract, and basic performance testing on the same API.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Lavanya Srinivasan L
Lavanya Srinivasan
Associate QA Engineer
🏢 Sonata Software
★★★★★

“The AI-augmented module — generating a first-draft test suite straight from an OpenAPI spec and then correcting it — saved me real time on my capstone project and taught me to review AI output critically instead of trusting it blindly. That's a skill Sonata specifically asked about in my interview.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
FAQ

Questions people actually ask

If yours is not here, call us — a working engineer will answer, not a call centre.

No questions have been added for this course yet.

SUCCESS STORIES

Our Students Excelling Worldwide

“
Harini Balasubramanian H
Harini Balasubramanian
API Test Engineer
🏢 Freshworks
★★★★★

“Went from barely knowing what a status code meant to writing a full RestAssured suite with authentication and contract tests against Pact and WireMock. The progression from manual Postman collections to real automation felt natural, not rushed. Freshworks tested me on exactly this kind of layered API coverage.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Rohit Chandrasekaran R
Rohit Chandrasekaran
QA Engineer
🏢 Wipro
★★★★★

“I don't come from a coding background, so Karate DSL was the module that made API automation click for me — low-code BDD-style syntax that still produces a real, CI-runnable suite. Wipro's panel was genuinely surprised a non-developer could speak to automation this confidently.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Anitha Ravichandran A
Anitha Ravichandran
Automation Test Engineer
🏢 EPAM Systems
★★★★★

“GraphQL testing was the gap in my resume and the reason I kept losing out on product-company interviews. This course closed it, along with WireMock for service virtualization when a dependent service isn't available yet. EPAM's stack is GraphQL-heavy, so this was the difference-maker.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Suresh Kumar Pillai S
Suresh Kumar Pillai
SDET
🏢 IBM India
★★★★ ★

“The k6 module for API performance basics was a nice addition most "API testing" courses skip entirely — usually that's treated as a separate specialization. Combined with GitHub Actions for CI, I walked in able to say I'd covered functional, contract, and basic performance testing on the same API.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
“
Lavanya Srinivasan L
Lavanya Srinivasan
Associate QA Engineer
🏢 Sonata Software
★★★★★

“The AI-augmented module — generating a first-draft test suite straight from an OpenAPI spec and then correcting it — saved me real time on my capstone project and taught me to review AI output critically instead of trusting it blindly. That's a skill Sonata specifically asked about in my interview.”

🎓 Complete API Testing — Manual, Automation, GraphQL & AI
Related Topics
Complete API Testing — Manual, Automation, GraphQL & AISoftware Testing Qa Aicourse in ChennaiOnline training12 Weeks course
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