API Testing Made Simple
This course is a practical, beginner-friendly introduction to API testing, designed for testers who want clarity without complexity. It starts from the basics—what an API is and how it behaves—and gradually builds confidence through real test cases covering methods, URLs, headers, bodies, responses, status codes, and authentication.
Every lesson focuses on how API testing actually feels in practice, not just theory. You will learn how to think like an API tester, identify meaningful test scenarios, validate responses, and report results using a simple, structured approach.
The course uses BusStop - API testing tool, to demonstrate execution, making API testing accessible even if you are not comfortable with coding.
What is an API ?
This video explains what an API is in the simplest way possible. It shows how websites and mobile apps talk to a server, where the real logic lives, and why this setup exists.
You’ll clearly see how requests and responses work and why APIs are the right place to focus your testing. If you want a clear mental model before writing or executing any API test cases, start here.
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Understanding API Components
This short video explains the core components of an API request in a simple, beginner-friendly way. You’ll learn how the URL, method, headers, body, and response work together when an API is called. Each concept is shown directly inside the tool, so you can connect the explanation with what you actually see while testing.
If you’re new to API testing or coming from a manual testing background, this walkthrough helps remove confusion and build confidence. Once these basics are clear, validating APIs becomes far easier and more structured.
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API Authentication
This video explains API authentication in a clear, practical way. You’ll see what happens when a request reaches the server, how credentials are checked, and why responses change based on authentication.
Instead of theory, the lesson focuses on what testers actually observe—successful requests returning 200 and failed ones returning 401. It then shows the same flow in action using BusStop, so you can connect the concept directly to real API testing.
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From API Documentation to Confident Testing
If you can read API documentation, you can test that API yourself . The process is simple: copy the URL and method from the docs, add the required headers, paste the request body, and run the request.
But real confidence comes after execution. The key is validating whether the response matches what the documentation promises. By checking the status code, confirming the response structure, and verifying important fields, you can clearly identify if the API behaves as expected.
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