Postman API Testing Tutorial: 10 Tricks to Debug 2× Faster

By Q1 2026, Postman has surpassed 35 million registered developers globally, and its AI-powered "Postbot" feature has shortened the average API test script writ

By Q1 2026, Postman has surpassed 35 million registered developers globally, and its AI-powered "Postbot" feature has shortened the average API test script writing time from 18 minutes to 4 minutes. For backend engineers, QA professionals, and developers integrating AI Agents, mastering Postman is no longer just about "being able to call APIs"—it has become a core capability that determines team delivery speed. This article breaks down Postman's complete path from basic requests to CI/CD automation through hands-on workflows. What is Postman: From HTTP Client to API Development Platform Postman originated as a Chrome extension created by Abhinav Asthana in 2012, became a standalone desktop application in 2014, and has now evolved into a full-lifecycle platform covering API design, testing, documentation, Mock Server, and monitoring. According to "the Postman Global API Survey 2024, 92% of developers use Postman at least once a week" (Source: Postman State of the API Report 2024) , with this percentage approaching 100% among backend and DevOps roles. Compared to tools like cURL, Insomnia, and Bruno, Postman differentiates itself through Workspace sharing, Collection Runner, built-in JavaScript test scripts, and deep integration with GitHub, Jenkins, and Newman. For projects managing more than 50 endpoints, Postman's Environment Variables and Pre-request Scripts can reduce maintenance costs by approximately 60%. Core Components Overview Request : A single HTTP request (GET/POST/PUT/DELETE/PATCH, etc.) Collection : A combination of multiple Requests that can be executed in batch Environment : Variable environments (dev / staging / prod) Workspace : A team collaboration space supporting real-time synchronization Mock Server : Simulates responses when the API is not yet developed Monitor : Periodically executes Collections and reports results Installation and Your First Request: Get Started in 5 Minutes Get the macOS, Windows, or Linux desktop version from the Postman of