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: Back-End Web Development, Django (Web Framework), Version Control, Git (Version Control System), API Testing, Web Development, Authentications, API Design, Application Development, Application Programming Interface (API), Restful API, Unit Testing, Test Tools, Database Development, MySQL, User Accounts, Web Applications, Databases
★ 4.6 (184) · Intermediate · Course · 1 - 4 Weeks

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Software Testing, Regression Testing, White-Box Testing, System Testing, Test Automation, Test Planning, Acceptance Testing, Test Engineering, Functional Testing, Test Case, Test Script Development, Test Tools, Software Quality Assurance, Verification And Validation, Unit Testing, Code Coverage, Software Quality (SQA/SQC), Integration Testing, Performance Testing, Security Testing
Intermediate · Course · 1 - 3 Months
Skills you'll gain: Generative AI Agents, Prompt Engineering, Agentic systems, Artificial Intelligence and Machine Learning (AI/ML), Generative AI, Artificial Intelligence, AI Security, Model Deployment, Large Language Modeling, Application Deployment, Development Environment, Security Testing, Responsible AI, Virtual Environment, Software Development, Python Programming, Software Testing, Microsoft Visual Studio, Computer Programming, Software Design
Intermediate · Course · 1 - 3 Months

Meta
Skills you'll gain: Jest (JavaScript Testing Framework), React.js, Web Development Tools, Unit Testing, Code Reusability, JavaScript Frameworks, UI Components, Frontend Integration, Front-End Web Development, Web Applications, Software Design Patterns, Javascript, Data Access, Data Sharing, Context Management
★ 4.6 (1.5K) · Intermediate · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Software Testing, Software Quality Assurance, Acceptance Testing, System Testing, Functional Testing, Software Quality (SQA/SQC), Quality Assurance, Behavior-Driven Development, Unit Testing, Issue Tracking, Verification And Validation, Browser Compatibility, Test Planning, User Acceptance Testing (UAT), Regression Testing, Quality Assurance and Control, Test Tools, Test Case, Quality Assessment, Quality Management Systems
Beginner · Professional Certificate · 3 - 6 Months

Duke University
Skills you'll gain: Object Oriented Programming (OOP), Java, Object Oriented Design, Java Programming, Software Engineering, Programming Principles, Computer Programming, Software Development Tools, Software Design, Predictive Modeling, Algorithms, Data Structures, Markov Model, Performance Tuning, Performance Testing, File I/O, Debugging, Application Programming Interface (API)
★ 4.6 (1.5K) · Beginner · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Restful API, ASP.NET, Model View Controller, .NET Framework, JSON, Application Programming Interface (API), API Design, Application Frameworks, Web Services, Middleware, Back-End Web Development, Extensible Markup Language (XML)
★ 4 (69) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Apache Spark, PySpark, Applied Machine Learning, Big Data, Machine Learning Methods, Data Storage Technologies, Statistical Machine Learning, Data Preprocessing, Data Storage, Data Pipelines, Machine Learning Algorithms, Machine Learning, Data Processing, Data Science, Model Evaluation, Descriptive Statistics
★ 3.8 (1.3K) · Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: AI Integrations, Cloud Deployment, Cloud Applications, Cloud Development, Cloud API, Application Deployment, API Gateway, OpenAI API, Cloud Hosting, Cloud Security, Application Programming Interface (API), Cloud Computing, Secure Coding, Serverless Computing, LLM Application, Cloud Technologies, OpenAI, Distributed Computing, Performance Tuning, Debugging
★ 4.9 (36) · Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Anthropic Claude, Prompt Engineering, LLM Application, Generative AI, Large Language Modeling, Multimodal Prompts, Cloud API, AI literacy, Artificial Intelligence, Responsible AI, Application Programming Interface (API), Cloud Deployment
★ 4.3 (38) · Intermediate · Course · 1 - 4 Weeks

Anthropic
Skills you'll gain: Claude Code, Anthropic Claude, Command-Line Interface, Tool Calling, Model Context Protocol, LLM Application, Software Development Tools, GitHub, Context Management, Code Review, Software Development, Generative AI Agents, Automation, Software Engineering
★ 4.3 (72) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Model Context Protocol, Responsible AI, LangGraph, AI Integrations, AI Workflows, AI Orchestration, Agentic Workflows, LangChain, Generative AI Agents, CrewAI, OpenAI API, Agentic systems, LLM Application, Tool Calling, Case Studies, OpenAI, Governance, Compliance Management, Model Deployment, AI Security
★ 2.5 (29) · Intermediate · Specialization · 3 - 6 Months