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: LLM Application, Tool Calling, Large Language Modeling, Retrieval-Augmented Generation, Command-Line Interface, Embeddings, Python Programming, Application Development, Vector Databases, User Interface (UI), Software Installation, Restful API, Development Environment
★ 4 (7) · Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: White-Box Testing, Software Testing, Risk Analysis, Code Coverage, Test Case, Test Tools, Test Planning, Risk Management, Software Quality Assurance
★ 3.4 (8) · Advanced · Course · 1 - 4 Weeks

Simplilearn
Skills you'll gain: API Testing, Performance Testing, Performance Stress Testing, Test Script Development, Application Programming Interface (API), Test Tools, Software Testing, Test Planning, Scenario Testing, System Testing, Scripting, Simulations, Scalability, Software Installation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: LangChain, LLM Application, Retrieval-Augmented Generation, LangGraph, AI Workflows, Large Language Modeling, AI Orchestration, Responsible AI, Generative AI, Token Optimization, Agentic systems, Prompt Engineering, Generative AI Agents, Natural Language Processing, Cloud Development, Application Programming Interface (API), Python Programming, Application Deployment, Data Processing, Pandas (Python Package)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Software Development Methodologies, Development Environment, Software Development, Application Programming Interface (API), Version Control, Software Design Patterns, JSON, Maintainability, Network Engineering, Software Development Tools, API Testing, Restful API, Data Import/Export, Git (Version Control System), Virtualization and Virtual Machines, Computer Programming Tools, Devops Tools, Extensible Languages and XML, YAML, Extensible Markup Language (XML)
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Frontend Integration, Data Access
★ 3.8 (6) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Web Scraping, Real Time Data, OpenAI API, Data Capture, Scripting, OpenAI, Natural Language Processing, LLM Application, Python Programming, Data Processing, Application Development, Machine Learning
★ 4.5 (8) · Intermediate · Guided Project · Less Than 2 Hours

Google Cloud
Skills you'll gain: Cloud Development, Cloud Applications, Cloud API, Google Cloud Platform, Cloud Deployment, API Gateway, Application Deployment, Application Programming Interface (API), Cloud Management, Data Management
Beginner · Project · Less Than 2 Hours

Skills you'll gain: LangChain, Generative AI Agents, Development Environment, Agentic systems, AI Workflows, Artificial Intelligence, Agentic Workflows, Tool Calling, LLM Application, Database Systems, Database Management, SQL, Database Application, OpenAI API, Software Development Tools, OpenAI, Data Processing
Intermediate · Course · 1 - 3 Months

Skills you'll gain: IT Automation, API Design, Automation, Cloud Solutions, Server Side, Back-End Web Development
★ 5 (9) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: API Design, API Gateway, Restful API, Application Programming Interface (API), Test Automation, Postman API Platform, Data Mapping, Application Deployment, Scripting, Cloud Deployment, Salesforce, Robotic Process Automation, Business Process Automation, Software Testing, Data Integration, Cloud API, API Testing, Architectural Design, Artificial Intelligence, Artificial Intelligence and Machine Learning (AI/ML)
Intermediate · Course · 3 - 6 Months

Coursera
Skills you'll gain: Prompt Engineering, Anthropic Claude, Experience Design, Generative AI, LLM Application, User Interface and User Experience (UI/UX) Design, Application Programming Interface (API), Artificial Intelligence, Artificial Intelligence and Machine Learning (AI/ML), AI Integrations, Application Development, Authentications, Context Management
Intermediate · Course · 1 - 4 Weeks