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: Restful API, Postman API Platform, API Design, Application Programming Interface (API), .NET Framework, API Testing, Authentications, Object-Relational Mapping, Development Environment, Microsoft Visual Studio, Web Development Tools, Endpoint Security, Software Design Patterns, Data Mapping, Identity and Access Management, Data Validation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: OpenAI API, Prompt Engineering, OpenAI, Responsible AI, LLM Application, ChatGPT, Fine-tuning, Image Analysis, Application Programming Interface (API), Generative AI, AI literacy, Natural Language Processing, Large Language Modeling, Computer Vision, Application Deployment, Development Environment
Intermediate · Course · 1 - 3 Months

Skills you'll gain: API Design, API Gateway, API Testing, Application Programming Interface (API), Software Documentation, Restful API, Software Design Documents, Server Side, Test Automation, Software Testing, Software Design, Back-End Web Development, Test Case, Collaboration, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Redis, Restful API, ASP.NET, .NET Framework, Application Programming Interface (API), Object-Relational Mapping, API Design, PostgreSQL, Middleware, Maintainability, Software Architecture, Software Design Patterns, Distributed Computing, Data Validation
Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Cryptography, Data Encryption Standard, Encryption, Advanced Encryption Standard (AES), Cryptographic Protocols, Application Security, Key Management, Public Key Cryptography Standards (PKCS), Secure Coding, Web Development, Email Security, PHP (Scripting Language), Authentications, Intrusion Detection and Prevention, Data Integrity, Algorithms, Command-Line Interface
Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Google Cloud Platform, Data Store, Cloud API, Health Information Management, Health Informatics, Application Programming Interface (API), Cloud Management, Health Care, Cloud-Based Integration, Cloud Computing, Clinical Data Management, Health Technology
Beginner · Project · Less Than 2 Hours

Skills you'll gain: OpenAI API, LLM Application, OpenAI, Generative AI Agents, ChatGPT, Cost Benefit Analysis, Tool Calling, Generative AI, Cloud API, AI Integrations, Application Programming Interface (API), Development Environment, Business Logic, Prompt Engineering, Scalability, Business Analysis, Business Solutions, Scripting, TypeScript, Node.JS
Intermediate · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Software Documentation, API Gateway, Scripting, API Design, API Testing, Restful API, JSON, Application Programming Interface (API), Data Import/Export, Scripting Languages, Technical Documentation, Performance Tuning, Content Management, Scalability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Prompt Engineering, OpenAI API, Generative AI, Data Visualization, Data Visualization Software, OpenAI, ChatGPT, Data Literacy, Plot (Graphics), Data Analysis, Python Programming, Data Manipulation, Natural Language Processing
Intermediate · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: API Testing, Application Programming Interface (API), Test Tools, Behavior-Driven Development, Test Automation
Beginner · Guided Project · Less Than 2 Hours

Scrimba
Skills you'll gain: OpenAI API, OpenAI, AI Workflows, LLM Application, AI Integrations, Generative AI Agents, AI Personalization, Agentic Workflows, Application Programming Interface (API), Performance Testing, Artificial Intelligence, Context Management, Application Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: API Testing, Test Automation, Test Script Development, Test Tools, Application Programming Interface (API), Restful API, Software Testing, Code Reusability, Configuration Management, Java Programming, Maintainability
Intermediate · Guided Project · Less Than 2 Hours