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.

Skills you'll gain: Web Applications, Program Development, Virtual Environment
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Prompt Engineering, OpenAI API, ChatGPT, Token Optimization, Application Programming Interface (API), API Testing, AI Integrations, Authentications, Context Engineering, Large Language Modeling, Key Management, Model Optimization, Performance Tuning
★ 4.1 (8) · Intermediate · Course · 1 - 3 Months

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
★ 5 (11) · Mixed · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: API Gateway, Cloud Deployment, Cloud Development, Restful API, Application Programming Interface (API), Cloud Applications, Application Deployment, API Design, Go (Programming Language), Software Development, Google Cloud Platform, Personally Identifiable Information, Data Access, DevOps, Database Application, Data Management
★ 3.9 (7) · Intermediate · Project · Less Than 2 Hours

Skills you'll gain: JSON, API Testing, Restful API, Software Quality Assurance, Software Engineering, Application Programming Interface (API), Test Script Development, Java Programming, Java, Data Mapping, Software Testing, Test Case, Web Services
★ 4.6 (20) · Mixed · Course · 1 - 4 Weeks

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

Google Cloud
Skills you'll gain: Google Cloud Platform, Data Store, Cloud API, Health Information Management, Health Informatics, Application Programming Interface (API), Cloud Management, Health Care, Cloud-Based Integration, Cloud Computing, Clinical Data Management, Health Technology
Beginner · Project · Less Than 2 Hours

Skills you'll gain: Back-End Web Development, Server Side, Full-Stack Web Development, Middleware, Authentications, API Design, Application Programming Interface (API), User Accounts, Databases, JavaScript Frameworks, GitHub, Development Environment, Data Validation
★ 4.6 (39) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Test Automation, Test Script Development, Test Data, Test Case, Test Tools, JSON, API Testing, Development Testing, Scenario Testing
Intermediate · Guided Project · Less Than 2 Hours

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
★ 5 (11) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Test Script Development, Unit Testing, Test Case, Development Testing, Test Tools, React.js, API Testing, Software Testing, Web Development Tools, Javascript
★ 4.3 (7) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: JUnit, Apache Maven, Unit Testing, Spring Framework, Spring Boot, Restful API, API Testing, Software Testing, Test Case, Application Programming Interface (API), Gradle, Build Tools, Software Development Tools, Integration Testing, Application Frameworks, Authentications
Intermediate · Course · 1 - 3 Months