Postman Pre-Request Script: Get Token & Call Another Request
Are you trying to figure out how to use a Postman Pre-Request Script to get a token or call another request? This tutorial is for you. We'll cover the most powerful use cases for pre-request scripts, focusing on how to automate your authentication flow completely.
In this step-by-step guide, we'll show you how to write a script that can call another request (like a login endpoint) using pm.sendRequest. You will learn how to get a token from that response and automatically set it as an environment variable. We'll even use a simple if condition to handle potential errors. This is the key to managing tokens that expire and automating your API testing workflow.
✅ In this video, we cover:
(0:00) What is a Postman Pre-Request Script?
(1:15) Use Case 1: Generating Dynamic Data
(2:30) Use Case 2: How to Call Another Request (pm.sendRequest)
(4:00) Live Demo: The Pre-Request Script to Get a Token
(6:15) Saving the Token and How to Set a Header for Auth
Stop manually copying and pasting tokens! By the end of this video, you'll have a reusable script to handle dynamic authentication in any of your Postman collections.
#Postman #APITesting #Automation #API