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.

Saïd Business School, University of Oxford
Skills you'll gain: FinTech, Financial Inclusion, Financial Services, Data Sharing, Financial Regulation, Financial Systems, Application Programming Interface (API), Financial Data, Banking, Financial Regulations, International Finance, Law, Regulation, and Compliance, Data Governance, Finance, Interoperability, Design Strategies, Regulatory Requirements, Strategic Thinking, Innovation, General Data Protection Regulation (GDPR)
★ 4.6 (25) · Beginner · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Command-Line Interface, Google Cloud Platform, Test Tools, Cloud API, API Testing, Application Programming Interface (API), Python Programming, Document Management
★ 4.7 (6) · Beginner · Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: ASP.NET, Restful API, .NET Framework, Web Services, JSON, Application Frameworks, Model View Controller, Web Applications, Back-End Web Development, API Design, Application Programming Interface (API), Extensible Markup Language (XML), Full-Stack Web Development, Application Security, Object-Relational Mapping
★ 3.9 (44) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Spring Boot, Application Development, API Testing, Java Programming, Web Development, Program Development, Application Frameworks, Software Testing, Test Case, Secure Coding, Development Environment, Model View Controller, Software Development Tools, UI Components, Data Access, Authentications, SQL, Object Oriented Programming (OOP), Data Persistence, User Interface (UI)
★ 4.7 (18) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: JSON, Application Programming Interface (API), Application Development, Data Access, Restful API, Python Programming, Program Development, User Interface (UI)
★ 4.2 (13) · Intermediate · Guided Project · Less Than 2 Hours

Advancing Women in Tech
Skills you'll gain: Prompt Patterns, AI literacy, AI Personalization, Communication Strategies, Model Context Protocol, Analytical Skills, Simulations, Gap Analysis
★ 4.6 (13) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: OpenAI API, OpenAI, AI Integrations, Prompt Engineering, JSON, Application Programming Interface (API), Web Applications, Generative AI
★ 4.2 (21) · Beginner · Guided Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: DeepSeek API, Deepseek, User Interface (UI), LLM Application, AI Workflows, AI Integrations, Human Computer Interaction, Agentic Workflows, Retrieval-Augmented Generation, AI Product Strategy, Embeddings, Application Deployment, Case Studies
★ 4 (9) · Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: API Testing, Software Documentation, API Design, Application Programming Interface (API), Technical Documentation, Restful API, JSON, Software Design
★ 4.1 (35) · Beginner · Guided Project · Less Than 2 Hours

Simplilearn
Skills you'll gain: Email Automation, Marketing Automation, OpenAI API, Business Process Automation, AI Workflows, OpenAI, ChatGPT, Automation, Performance Tuning, Workflow Management, Generative AI, Scalability, Blogs, Process Optimization, Operational Efficiency, AI Integrations, Real Time Data, Prompt Engineering, Business Logic, Social Media Content
★ 4.3 (133) · Beginner · Course · 1 - 4 Weeks
Universidad Austral
Skills you'll gain: Angular, JavaScript Frameworks, Continuous Integration, TypeScript, JSON, Application Frameworks, CI/CD, Application Programming Interface (API), Restful API, Test Automation, Web Components, React Redux, Full-Stack Web Development, Web Development Tools, Web Services, Unit Testing, Web Applications, NoSQL, Javascript, Data Store
★ 3.2 (147) · Beginner · Course · 1 - 4 Weeks

Imperial College London
Skills you'll gain: Tensorflow, Keras (Neural Network Library), Model Evaluation, Deep Learning, Image Analysis, Model Training, Convolutional Neural Networks, Computer Programming, Model Optimization, Data Validation, Applied Machine Learning, Supervised Learning, Computer Vision, Artificial Neural Networks, Data Persistence
★ 4.9 (582) · Intermediate · Course · 1 - 3 Months