API courses can help you learn how to design, build, and test application programming interfaces, as well as understand RESTful services and authentication methods. You can build skills in data exchange formats like JSON and XML, error handling, and API documentation practices. Many courses introduce tools such as Postman for testing APIs, Swagger for documentation, and various programming languages like Python or JavaScript to implement API calls, allowing you to effectively integrate and manage data across different systems.

Skills you'll gain: Application Programming Interface (API), Test Execution Engine, Interactive Data Visualization, Web Applications, Debugging
Beginner · Course · 1 - 4 Weeks

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
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: OpenAI API, OpenAI, AI Workflows, LLM Application, AI Integrations, Generative AI Agents, AI Personalization, Agentic Workflows, Application Programming Interface (API), Performance Testing, Artificial Intelligence, Context Management, Application Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Restful API, ASP.NET, Postman API Platform, Application Programming Interface (API), .NET Framework, API Design, Cloud Deployment, Object-Relational Mapping, Web Development, Database Design, Authentications, API Testing, Web Services, Database Development, Data Store, Microsoft Visual Studio, Microsoft Development Tools, Microsoft Azure, Secure Coding, Identity and Access Management
Intermediate · Course · 1 - 3 Months

Skills you'll gain: API Testing, JSON, Test Automation, Test Script Development, Application Programming Interface (API), Restful API, Software Testing, Test Tools, Integration Testing, Functional Testing
Beginner · Guided Project · Less Than 2 Hours

Google Cloud
Skills you'll gain: Google Cloud Platform, Cloud API, Health Informatics, Data Import/Export, Data Mapping, Clinical Data Management, Health Care, Health Information Management, Data Store, Web Development
Intermediate · Project · Less Than 2 Hours

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

Skills you'll gain: API Design, API Gateway, API Testing, Application Programming Interface (API), Software Documentation, Restful API, Software Design Documents, Server Side, Test Automation, Software Testing, Software Design, Back-End Web Development, Test Case, Collaboration, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, Dashboard Creation, Cascading Style Sheets (CSS), Web Applications, HTML and CSS, Javascript, Wireframing, Restful API, Application Programming Interface (API), Real Time Data, Software Development
Intermediate · 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: Build Tools, Authorization (Computing), Data Validation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: OpenAI API, Fine-tuning, Prompt Engineering, OpenAI, Large Language Modeling, ChatGPT, Multimodal Prompts, Application Performance Management, Generative Model Architectures, Generative AI, LLM Application, Image Analysis, Photo Editing, Token Optimization, Application Programming Interface (API), Animations, Tool Calling, File Management, Python Programming, Computer Science
Beginner · Specialization · 1 - 3 Months