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.

Board Infinity
Skills you'll gain: Restful API, Spring Framework, API Design, Application Programming Interface (API), Data Validation, Model View Controller, Back-End Web Development, Spring Boot, Server Side, Java Programming, Verification And Validation, Maintainability, Enterprise Application Management, Configuration Management, Extensible Markup Language (XML)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Middleware, React Redux, React.js, Code Reusability, Web Development Tools, Development Environment, Responsive Web Design, Frontend Performance, Scalability, Application Programming Interface (API), Web Design and Development, HTML and CSS, Front-End Web Development, Maintainability, UI Components, Cascading Style Sheets (CSS), Software Development Tools, JavaScript Frameworks, Authorization (Computing), Data Validation
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Server Side, Full-Stack Web Development, MySQL, Frontend Integration, Node.JS, Back-End Web Development, React.js, Database Management, Web Applications, Application Programming Interface (API), Web Development, SQL, Restful API, Web Development Tools, Postman API Platform, Code Reusability, Front-End Web Development, HTML and CSS
Intermediate · Course · 1 - 3 Months

Pragmatic AI Labs
Skills you'll gain: Docker (Software), CI/CD, Containerization, LLM Application, Continuous Integration, Software As A Service, Product Development, Continuous Deployment, Commercialization, Large Language Modeling, Strategic Marketing, Software Development, Marketing Strategies, Application Deployment, Product Planning, Go To Market Strategy, API Design, Generative AI, Software Testing, GitHub
Beginner · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Debugging, Bioinformatics, Java, Algorithms, Java Programming, Program Development, Programming Principles, Statistical Analysis, Software Design, Computer Programming, Integrated Development Environments, File I/O, Data Processing, Software Documentation, Data Manipulation, Object Oriented Programming (OOP), Data Analysis, Web Scraping, Software Testing, Problem Solving
★ 4.6 (8.1K) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Prompt Engineering Tools, API Testing, Test Automation, Test Script Development, Prompt Patterns, Test Tools, Claude Code, Software Testing, Test Case, AI Integrations, Functional Testing, Quality Assurance, GitHub Copilot, Application Programming Interface (API), Restful API, Test Data, Automation, AI Security, Debugging
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Application Programming Interface (API), Microsoft Azure, Cloud API, Computer Vision, Artificial Intelligence and Machine Learning (AI/ML), User Accounts, Image Analysis, Artificial Intelligence, Cloud Computing, Software Development
★ 4.5 (529) · Intermediate · Guided Project · Less Than 2 Hours

LearnKartS
Skills you'll gain: Node.JS, Authentications, Cloud Deployment, Middleware, MongoDB, Server Side, Back-End Web Development, Role-Based Access Control (RBAC), Application Deployment, Full-Stack Web Development, API Testing, Authorization (Computing), Redis, JavaScript Frameworks, JSON, Database Management, TypeScript, Javascript, Database Design, Debugging
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Quality Monitoring, Cloud API, Application Programming Interface (API), Cloud Hosting, Webhook Security, Data Migration
★ 4.5 (106) · Intermediate · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: CI/CD, C# (Programming Language), Azure DevOps, Load Balancing, Object Oriented Design, Continuous Integration, Role-Based Access Control (RBAC), Continuous Delivery, Scalability, Authentications, SQL, Microsoft Copilot, .NET Framework, Relational Databases, ASP.NET, Database Management, Graph Theory, Back-End Web Development, Program Development, Data Structures
★ 4.6 (350) · Beginner · Professional Certificate · 3 - 6 Months

Pragmatic AI Labs
Skills you'll gain: Amazon Bedrock, Amazon Web Services, Agentic Workflows, LLM Application, AI Workflows, Anthropic Claude, Generative AI Agents, Agentic systems, Retrieval-Augmented Generation, Tool Calling, Cloud Computing, Generative AI, Model Deployment, Prototyping, Bash (Scripting Language), Embeddings, Large Language Modeling, Restful API, Model Evaluation, Rust (Programming Language)
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Restful API, Spring Framework, Spring Boot, Hibernate (Java), API Design, Development Testing, Verification And Validation, Authentications, Application Programming Interface (API), Object-Relational Mapping, Maintainability, Secure Coding, Data Persistence, Application Frameworks, Authorization (Computing), Application Design, YAML, Role-Based Access Control (RBAC), Endpoint Security, Business Logic
Intermediate · Course · 1 - 4 Weeks