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: Kubernetes, Application Deployment, API Gateway, Cloud-Native Computing, Containerization, Network Troubleshooting, Data Storage, Network Administration, Infrastructure Security, Role-Based Access Control (RBAC), YAML, Security Controls, Linux Administration, Data Storage Technologies, General Networking, Problem Management, Network Security, Data Persistence, Test Tools, Scenario Testing
★ 4.4 (19) · Intermediate · Specialization · 1 - 3 Months

Packt
Skills you'll gain: Spring Boot, Hibernate (Java), Spring Framework, Web Applications, Application Development, Web Development, Program Development, Restful API, Application Frameworks, Secure Coding, Bootstrap (Front-End Framework), Development Environment, Object-Relational Mapping, Model View Controller, UI Components, Software Development Tools, Authentications, User Interface (UI), Databases
★ 4.7 (13) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Retrieval-Augmented Generation, Model Context Protocol, Agentic Workflows, AI Orchestration, Agentic systems, Generative AI Agents, Anthropic Claude, AI Integrations, Tool Calling, LLM Application, Generative AI, Context Management, Automation, Scalability, Application Programming Interface (API), Servers, Python Programming
★ 3.9 (10) · Intermediate · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Data Pipelines, Rust (Programming Language), Restful API, Cloud-Based Integration, Amazon Web Services, Cloud Development, Data Structures, Secure Coding, Data Processing, Other Programming Languages, Application Programming Interface (API), Data Manipulation, System Programming, Encryption, Python Programming, Command-Line Interface, Software Testing
★ 3.5 (71) · Intermediate · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Javascript and jQuery, jQuery, Data Validation, Javascript, Event-Driven Programming, Application Programming Interface (API), Object Oriented Programming (OOP)
★ 4.8 (69) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: ChatGPT, User Interface (UI), No-Code Development, AI Integrations, LLM Application, Retrieval-Augmented Generation, Generative AI, Artificial Intelligence, Frontend Integration, Quality Assurance
★ 4.4 (23) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Infrastructure, CI/CD, Microservices, Application Deployment, Cloud Engineering, Cloud Deployment, Kubernetes, Cloud Computing Architecture, Google App Engine, Site Reliability Engineering, Restful API, Google Cloud Platform, Cloud Services, Infrastructure As A Service (IaaS), Devops Tools, Infrastructure Architecture, Continuous Deployment, Network Architecture, API Design, Cloud Applications
★ 4.6 (81) · Advanced · Course · 1 - 3 Months

Scrimba
Skills you'll gain: React Redux, React.js, Cascading Style Sheets (CSS), UI Components, JavaScript Frameworks, Front-End Web Development, User Interface (UI), Web Frameworks, Maintainability, Authentications, Web Development Tools, Application Frameworks, Javascript, Application Programming Interface (API), Web Design, Frontend Performance, Authorization (Computing), Web Development, Web Applications, Middleware
★ 4.8 (36) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Retrieval-Augmented Generation, Large Language Modeling, LLM Application, Development Environment, Prompt Patterns, Multimodal Prompts, Tool Calling, Embeddings, Generative AI Agents, Vector Databases, User Interface (UI), OpenAI API, Generative AI, AI Workflows, Program Development, Prompt Engineering, Agentic systems, Plot (Graphics), AI Integrations, Augmented Reality
★ 4.4 (20) · Intermediate · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: React Native, Mobile Development, Responsive Web Design, Cross Platform Development, Microservices, User Interface (UI), User Interface and User Experience (UI/UX) Design, DevOps, UI Components, User Interface (UI) Design, UI/UX Strategy, Secure Coding, Development Testing, Mobile Development Tools, Unit Testing, Software Testing, Application Development, Ajax, Authentications, Version Control
★ 4.2 (56) · Intermediate · Specialization · 1 - 3 Months

SkillUp
Skills you'll gain: Hibernate (Java), Object-Relational Mapping, Spring Boot, Restful API, Java, NoSQL, Database Development, Spring Framework, SQL, Database Systems, Databases, Database Design, Application Frameworks, Java Programming, Data Access, Database Management, Relational Databases, Back-End Web Development, Software Development
★ 4.8 (10) · Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Apache Maven, Spring Framework, Microservices, Spring Boot, Java, Java Programming, Back-End Web Development, Software Architecture, Server Side, Load Balancing, Web Services, Restful API, Web Applications
★ 4.5 (52) · Advanced · Course · 1 - 4 Weeks