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.

University of London
Skills you'll gain: JSON, Restful API, Javascript, Application Programming Interface (API), Web Services, Hypertext Markup Language (HTML), Front-End Web Development, Data Structures
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Simple Object Access Protocol (SOAP), Restful API, Web Services, Hypertext Markup Language (HTML), HTML and CSS, Java Platform Enterprise Edition (J2EE), Software Design, Java, Extensible Markup Language (XML), Application Programming Interface (API), API Design, Object Oriented Design, Software Design Patterns, Software Architecture, Web Design, Web Design and Development, Web Applications, Front-End Web Development, Web Development, Command-Line Interface
Beginner · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: MLOps (Machine Learning Operations), Data Pipelines, Model Evaluation, Systems Design, Transfer Learning, Data Preprocessing, Data Quality, Feature Engineering, Deep Learning, Python Programming, Data Validation, Scikit Learn (Machine Learning Library), Applied Machine Learning, Predictive Modeling, Software Engineering, Debugging, Supervised Learning, Git (Version Control System), Performance Metric, Statistical Analysis
Intermediate · Specialization · 1 - 3 Months

Board Infinity
Skills you'll gain: Restful API, Object Oriented Programming (OOP), Object Oriented Design, Java Programming, Spring Framework, Java, Spring Boot, API Design, Application Programming Interface (API), Hibernate (Java), Data Validation, Development Testing, Verification And Validation, Authentications, Model View Controller, Back-End Web Development, Code Reusability, Object-Relational Mapping, Programming Principles, Maintainability
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Agentic systems, Retrieval-Augmented Generation, Google Gemini, Agentic Workflows, Generative AI Agents, Node.JS, OpenAI API, Model Context Protocol, Prompt Engineering, LLM Application, Development Environment, AI Integrations, AI Workflows, Angular, Generative AI, Large Language Modeling, Tool Calling, Server Side, Embeddings, Frontend Integration
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Authentications, OAuth, Back-End Web Development, Event-Driven Programming, Database Management, Object-Relational Mapping, Databases, Authorization (Computing), Redis, Secure Coding, Application Programming Interface (API), Restful API, Data Modeling, API Design, Email Automation
Intermediate · Course · 3 - 6 Months

Board Infinity
Skills you'll gain: White-Box Testing, Performance Testing, Maintainability, Test Tools, Software Testing, Code Review, Test Automation, Software Technical Review, Test Planning, Scripting, Risk Analysis, Performance Stress Testing, Software Quality Assurance, Application Security, Test Script Development, Continuous Integration, Code Coverage, Test Case, Quality Assurance, Security Testing
Advanced · Specialization · 1 - 3 Months

Google Cloud
Skills you'll gain: Responsible AI, Cloud Security, Digital Transformation, Cloud Management, Identity and Access Management, Google Cloud Platform, Agentic Workflows, Serverless Computing, Site Reliability Engineering, Cloud Solutions, Containerization, Cloud Deployment, Application Programming Interface (API), Real Time Data, Hybrid Cloud Computing, Service Level Agreement, Cloud Platforms, Cloud Infrastructure, Data Security, Data Governance
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Penetration Testing, Open Web Application Security Project (OWASP), Web Applications, Vulnerability Scanning, Exploitation techniques, Vulnerability Assessments, Security Testing, Application Security, Test Tools, Web Servers, Content Management Systems, Application Programming Interface (API), Databases
Intermediate · Course · 1 - 4 Weeks

Google DeepMind
Skills you'll gain: Google Gemini, Gemini, Generative AI Agents, AI Orchestration, LLM Application, Token Optimization, Agentic Workflows, AI Integrations, Google Cloud Platform, Tool Calling, Agentic systems, Generative Model Architectures, AI Security, Cloud Deployment, Prompt Engineering, Application Programming Interface (API), Application Deployment, Secure Coding, Data Structures
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Enterprise Resource Planning, Microsoft Power Platform, Microsoft Azure, Development Environment, Application Deployment, Microsoft 365, Docker (Software), Virtual Environment, Microsoft Visual Studio, Software As A Service, Containerization, Cloud Deployment, Serverless Computing, Scalability, Application Programming Interface (API), Git (Version Control System), Business Development
Beginner · Course · 1 - 3 Months

Skills you'll gain: Full-Stack Web Development, Development Environment, Front-End Web Development, OpenAI API, Web Design and Development, AI Integrations, LLM Application, React.js, UI Components, Large Language Modeling, Generative AI Agents, Software Development Tools, Back-End Web Development, Web Development, Server Side, Natural Language Processing, File Management
Intermediate · Course · 1 - 3 Months