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.

Board Infinity
Skills you'll gain: Application Programming Interface (API), API Gateway, GraphQL, API Design, Restful API, OAuth, Software Documentation, Authentications, Debugging, Real Time Data, Authorization (Computing), Version Control
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Restful API, API Design, Application Deployment, Application Programming Interface (API), Authentications, API Testing, Cloud Deployment, Web Services, Web Frameworks, User Provisioning, Unit Testing, Continuous Deployment, User Accounts, Test Script Development, Email Automation, Debugging, Operational Databases, Back-End Web Development, Software Testing, Continuous Integration
★ 4.2 (22) · Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Postman API Platform, API Testing, Data Validation, Application Programming Interface (API), Restful API, Verification And Validation, Performance Tuning, Microservices, Performance Testing, Test Tools, Security Controls, Data Integrity, Authentications
★ 4.6 (19) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: ASP.NET, .NET Framework, C# (Programming Language), Microsoft Visual Studio, Application Programming Interface (API), Web Development Tools, Restful API, Microsoft Azure, Web Applications, Application Frameworks, Application Development, Development Environment, Event-Driven Programming, Middleware, Software Installation
★ 2.6 (12) · Intermediate · Course · 1 - 3 Months
Codio
Skills you'll gain: OAuth, Web Development Tools, Authentications, Web Servers, Application Programming Interface (API), API Design, Cloud API, Restful API, Server Side, Web Development, Servers, JSON, Software Documentation, Web Applications, Javascript, Web Services, Technical Documentation, Application Security
★ 4.5 (6) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: API Gateway, Application Programming Interface (API), Kubernetes, Cloud API, Google Cloud Platform, Hybrid Cloud Computing, Application Performance Management, Capacity Management, Istio, Scalability, API Testing, Security Controls, System Monitoring, Apache Cassandra, Application Deployment, Patch Management, Proxy Servers, Data Security, Cloud Deployment, Package and Software Management
★ 4.6 (58) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Restful API, API Design, Web Applications, Cascading Style Sheets (CSS), Application Programming Interface (API), HTML and CSS, JSON, Web Servers, Javascript, Software Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cucumber (Software), Gherkin (Scripting Language), Behavior-Driven Development, Apache Maven, API Testing, Test Script Development, Restful API, Test Automation, JSON, Scalability, Application Programming Interface (API), Test Case, Java Programming, Test Data, Authentications, Java
★ 5 (16) · Mixed · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Prompt Engineering, OpenAI API, Token Optimization, LangChain, ChatGPT, Multimodal Prompts, Prompt Patterns, OpenAI, Generative AI, No-Code Development, LLM Application, AI powered creativity, Generative Model Architectures, Microsoft Power Platform, Application Programming Interface (API), Large Language Modeling, AI Workflows, Email Automation, Application Development, JSON
★ 3.6 (7) · Intermediate · Specialization · 3 - 6 Months

Edureka
Skills you'll gain: API Design, Application Programming Interface (API), Data Validation, Restful API, API Testing, Application Frameworks, Performance Tuning, Data Integrity, Software Versioning, Django (Web Framework), Software Documentation, Middleware, Node.JS, Application Performance Management, Spring Boot, Test Automation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: JSON, Restful API, HTML and CSS, Web Design, Web Design and Development, Cloud API, Hypertext Markup Language (HTML), Web Development, Application Programming Interface (API), Cascading Style Sheets (CSS), Web Applications, Real Time Data, Javascript
★ 4.3 (45) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: API Testing, Cucumber (Software), Behavior-Driven Development, JSON, Gherkin (Scripting Language), Restful API, Application Programming Interface (API), Test Tools, Test Case, Test Planning, Software Testing, Test Engineering, Security Testing, Test Script Development, Code Coverage, Test Data, Test Automation, Apache Maven, Authentications, Development Environment
★ 4.8 (15) · Mixed · Course · 1 - 4 Weeks