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.

Duke University
Skills you'll gain: Cloud Deployment, Technical Communication, Cloud Infrastructure, MLOps (Machine Learning Operations), Cloud-Native Computing, Cloud Technologies, Cloud Services, Cloud Hosting, CI/CD, Cloud Platforms, Cloud Computing, Azure DevOps Pipelines, Application Deployment, Cloud Engineering, Software Engineering, Cloud Development, Continuous Delivery, Applied Machine Learning, Cloud API, Machine Learning
★ 4.8 (1.3K) · Intermediate · Specialization · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Data Manipulation, Data Cleansing, Data Wrangling, Data Processing, Data Integration, Data Preprocessing, Data Transformation, Data Import/Export, Data Collection, Data Management, Web Scraping, Data Access, R Programming, R (Software), MySQL, File Management, SQL, Application Programming Interface (API)
★ 4.5 (8.1K) · Mixed · Course · 1 - 4 Weeks
Skills you'll gain: Node.JS, Restful API, Database Design, Front-End Web Development, React Redux, Ajax, Database Development, Database Application, Server Side, Back-End Web Development, NoSQL, Javascript, Full-Stack Web Development, React.js, Performance Tuning, API Design, Data Structures, MongoDB, Debugging, JavaScript Frameworks
★ 4.4 (1.5K) · Beginner · Specialization · 3 - 6 Months

University of Michigan
Skills you'll gain: JSON, Data Processing, Data Wrangling, Restful API, Data Manipulation, Data Access, Application Programming Interface (API), Python Programming, Data Import/Export, Data Transformation, Data Structures, File I/O, Data Collection
★ 4.7 (4.1K) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: iOS Development, Mobile Development, Apple iOS, User Interface (UI), Apple Xcode, Swift Programming, Unit Testing, User Interface (UI) Design, Objective-C (Programming Language), User Interface and User Experience (UI/UX) Design, UI Components, Mobile Development Tools, Data Structures, Application Development, Interactive Design, Programming Principles, Test Case, Cross Platform Development, Application Programming Interface (API), Prototyping
★ 4.6 (1.3K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: LLM Application, OpenAI API, ChatGPT, Responsible AI, Retrieval-Augmented Generation, Large Language Modeling, Generative AI, Generative Model Architectures, Fine-tuning, OpenAI, Generative AI Agents, Natural Language Processing, Token Optimization, AI Security, AI Workflows, Embeddings, Data Ethics, Artificial Intelligence and Machine Learning (AI/ML), Model Evaluation, Computer Vision
Intermediate · Course · 1 - 3 Months

Skills you'll gain: C# (Programming Language), ASP.NET, Maintainability, Object Oriented Design, .NET Framework, JSON, Development Environment, Web Development, Application Frameworks, Restful API, Code Reusability, Microsoft Development Tools, Microsoft Visual Studio, File I/O, Web Applications, UI Components, Object Oriented Programming (OOP), Back-End Web Development, Functional Design, Application Deployment
Beginner · Specialization · 3 - 6 Months

University of Michigan
Skills you'll gain: Unified Modeling Language, Software Design, Software Design Documents, Object Oriented Design, Diagram Design, Image Analysis, Python Programming, Jupyter, Software Engineering, Application Programming Interface (API), Computer Vision, Computer Programming
★ 4.2 (1.5K) · Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Spring Framework, Microservices, JUnit, Model View Controller, Restful API, Application Frameworks, Spring Boot, Software Architecture, API Gateway, Web Services, Cloud-Native Computing, Object-Relational Mapping, Transaction Processing, Data Persistence, Frontend Integration, Service Oriented Architecture, JSON, Database Management, Unit Testing, Java Programming
★ 3.9 (704) · Beginner · Specialization · 1 - 3 Months

JetBrains
Skills you'll gain: Retrieval-Augmented Generation, Vector Databases, LLM Application, Embeddings, OpenAI API, AI Integrations, Large Language Modeling, API Design, Agentic Workflows, Generative AI Agents, Generative AI, Artificial Intelligence and Machine Learning (AI/ML), Artificial Intelligence, Agentic systems, Python Programming, Machine Learning Methods, Docker (Software), Integrated Development Environments, Machine Learning Algorithms, Data Science
★ 4.9 (11) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Anthropic Claude, Vibe coding, Prompt Patterns, Model Context Protocol, LLM Application, Context Management, OpenAI, Debugging, ChatGPT, Generative AI, Large Language Modeling, Multimodal Prompts, Cloud API, Token Optimization, Context Engineering, Code Review, Artificial Intelligence, Software Development, Web Development Tools
★ 4.4 (319) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Angular, TypeScript, JavaScript Frameworks, UI Components, Frontend Performance, React Native, Web Applications, Front-End Web Development, React.js, Javascript, Web Development, Performance Tuning, Frontend Integration, Application Programming Interface (API), Restful API, User Interface (UI), Unit Testing
Intermediate · Course · 3 - 6 Months