API testing courses can help you learn how to validate API functionality, performance, security, and reliability. You can build skills in writing test cases, automating tests, and analyzing API responses to ensure they meet specifications. Many courses introduce tools like Postman, SoapUI, and JMeter, that support executing tests and monitoring API behavior. You'll also explore methods for integrating testing into the development process, enhancing collaboration between teams, and ensuring seamless application performance.

University of Lausanne
Skills you'll gain: Laboratory Testing, Biochemistry, Analytical Chemistry, Pharmacology, Sports Medicine, Law, Regulation, and Compliance, Arbitration, Culture, Social Sciences, Regulatory Compliance, Sociology, Ethical Standards And Conduct, Psychology
★ 4.7 (161) · Mixed · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Responsive Web Design, Restful API, User Interface (UI) Design, Application Programming Interface (API), Web Development Tools, Database Design, HTML and CSS, API Design, Front-End Web Development, MongoDB, Javascript, Postman API Platform, Bootstrap (Front-End Framework), React.js, UI Components, Ajax, Database Management, OAuth, Frontend Integration, Authentications
★ 5 (7) · Intermediate · Specialization · 1 - 3 Months

Vanderbilt University
Skills you'll gain: Generative AI Agents, Debugging, TypeScript, Agentic systems, AI Workflows, Node.JS, OpenAI API, Generative AI, Program Development, Artificial Intelligence, LLM Application, Programming Principles, Maintainability, Development Environment, Prompt Engineering, Application Frameworks, Javascript, Large Language Modeling, File Systems
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cloud API, Google Cloud Platform, Text Mining, Application Programming Interface (API), LLM Application, Generative AI, Natural Language Processing, Jupyter, Python Programming, Classification Algorithms
★ 4.1 (7) · Intermediate · Guided Project · Less Than 2 Hours

Google Cloud
Skills you'll gain: Database Architecture and Administration, Cloud Computing Architecture, Oracle Databases, Data Migration, Microsoft SQL Servers, Google Cloud Platform, Cloud Computing, Database Management, Databases, Virtual Private Networks (VPN), Network Security, Enterprise Application Management, Virtual Machines
★ 4.3 (37) · Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Apache Airflow, MLOps (Machine Learning Operations), User Acceptance Testing (UAT), Prompt Patterns, LLM Application, AI Security, Extract, Transform, Load, Scripting, Technical Communication, SQL, Data Pipelines, PyTorch (Machine Learning Library), Miro AI, Data Presentation, Large Language Modeling, Python Programming, Performance Tuning, Root Cause Analysis, Statistical Analysis, Version Control
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Selenium (Software), JUnit, HTML and CSS, Test Automation, Software Testing, Test Script Development, Web Development, Software Quality Assurance, Continuous Integration, Java, Test Execution Engine, Object Oriented Programming (OOP), Debugging
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Secure Coding, Penetration Testing, Security Testing, Application Security, Cyber Security Assessment, Payment Systems, Continuous Monitoring, Blockchain, Incident Response, Vulnerability Scanning, Code Review, Data Validation
★ 4.8 (30) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Processing, Google Cloud Platform, Data Store, Data Pipelines, Data Capture, Unstructured Data, Cloud API, Geographic Information Systems, Cloud Storage, Serverless Computing, Business Process
Beginner · Project · Less Than 2 Hours

Skills you'll gain: UI/UX Research, User Interface and User Experience (UI/UX) Design, User Experience, User Centered Design, Usability, User Flows, User Interface (UI) Design, Responsive Web Design, Interaction Design, Web Design, Typography, Prototyping, Persona Development
★ 4 (13) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: AI Workflows, OpenAI API, LLM Application, OpenAI, Model Context Protocol, Generative AI Agents, Agentic systems, Tool Calling, Prompt Engineering, ChatGPT, Artificial Intelligence, Application Programming Interface (API), User Interface (UI), Context Management, Large Language Modeling, Python Programming, Development Environment, Application Deployment, Debugging
Intermediate · Course · 1 - 4 Weeks

MongoDB Inc.
Skills you'll gain: Data Transformation, MongoDB, Data Manipulation, NoSQL, Data Migration, Data Analysis, Query Languages, Data Preprocessing, Data Structures, Network Analysis, Machine Learning
★ 4.4 (66) · Intermediate · Course · 1 - 4 Weeks