API testing courses can help you learn how to validate API functionality, performance, security, and reliability. You can build skills in writing test cases, automating tests, and analyzing API responses to ensure they meet specifications. Many courses introduce tools like Postman, SoapUI, and JMeter, that support executing tests and monitoring API behavior. You'll also explore methods for integrating testing into the development process, enhancing collaboration between teams, and ensuring seamless application performance.

Edureka
Skills you'll gain: API Design, Application Programming Interface (API), Data Validation, Restful API, API Testing, Application Frameworks, Performance Tuning, Data Integrity, Software Versioning, Django (Web Framework), Software Documentation, Middleware, Node.JS, Application Performance Management, Spring Boot, Test Automation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: API Testing, Restful API, Application Programming Interface (API), Test Script Development, Authentications, JSON, Security Testing, Authorization (Computing), Java Programming, Scenario Testing, Java, Test Tools
Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: API Testing, Application Programming Interface (API), Test Tools, Behavior-Driven Development, Test Automation
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: API Testing, Restful API, Authentications, Test Automation, Test Script Development, Application Programming Interface (API), Software Testing, Authorization (Computing), Java Programming, Java, User Accounts
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: ASP.NET, Middleware, .NET Framework, Restful API, Application Programming Interface (API), C# (Programming Language), API Design, Databases, Performance Tuning, Data Persistence, Web Development, Scalability, Development Environment, Web Applications, Web Analytics, Application Security
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Anthropic Claude, Application Programming Interface (API), LLM Application, JSON, AI Integrations, Generative AI Agents, Agentic systems, Scripting, Token Optimization, Artificial Intelligence, Automation, Development Environment
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: API Testing, Integration Testing, Continuous Deployment, Microservices, Software Versioning, Test Script Development, Continuous Integration, Test Automation, CI/CD, API Design, Verification And Validation
Advanced · Course · 1 - 4 Weeks
Codio
Skills you'll gain: OAuth, Web Development Tools, Authentications, Web Servers, Application Programming Interface (API), API Design, Cloud API, Restful API, Server Side, Web Development, Servers, JSON, Software Documentation, Web Applications, Javascript, Web Services, Technical Documentation, Application Security
Intermediate · Course · 1 - 4 Weeks

Vanderbilt University
Skills you'll gain: Spring Boot, API Testing, Spring Framework, Restful API, Application Programming Interface (API), API Design, Data Persistence, Web Applications, Application Frameworks, Development Testing, Software Testing, Web Services, Object-Relational Mapping, Application Security, Authentications, Authorization (Computing), Network Protocols
Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Jest (JavaScript Testing Framework), User Acceptance Testing (UAT), Cucumber (Software), Postman API Platform, Software Testing, Behavior-Driven Development, Selenium (Software), Test Driven Development (TDD), Performance Stress Testing, API Testing, Unit Testing, Performance Testing, Application Programming Interface (API), User Interface (UI), Javascript
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: API Testing, Restful API, Application Programming Interface (API), Test Script Development, JSON, Data Validation, Test Automation, Test Case, Development Environment, Verification And Validation
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Restful API, Postman API Platform, API Design, Application Programming Interface (API), .NET Framework, API Testing, Authentications, Object-Relational Mapping, Development Environment, Microsoft Visual Studio, Web Development Tools, Endpoint Security, Software Design Patterns, Data Mapping, Identity and Access Management, Data Validation
Intermediate · Course · 1 - 3 Months