Parameterize Requests in Postman

We can parameterize Postman requests to execute the same request with various sets of data. This is done with the help of variables along with parameters. A parameter is a part of the URL used to pass more information to the server.

The data can be used in the form of a data file or an Environment variable. Parameterization is an important feature of Postman and helps to eliminate redundant tests. Parameters are enclosed in double curly braces {{parameter}}.

Let us take an example of an URL:https://www.tutorialspoint.com/index.htm. We shall create a variable as URL then use it for parameterization of the request. We can refer to it in the format {{url}} in Postman.

A parameter is in the form of a key-value pair. So to point to the URL:https://www.tutorialspoint.com/index.htm, we can mention it as {{url}}/index.htm. So here, the URL is the key and the value set is https://www.tutorialspoint.com.

Create a Parameter Request

Step1 − Click on the eye icon to the right of the Environment dropdown in the top right corner in the Postman application.

Step 2 − Click on the Edit link in the Globals section

Step 3 − MANAGE ENVIRONMENTS pop-up comes up. Enter URL for the VARIABLE field and https://www.tutorialspoint.com for INITIAL VALUE. Then click on Save.

Step 4 − Click on close to move to the next screen.

Step 5 − In the Http Request tab, enter {{url}}/index.htm in the address bar. Select the GET method and click on Send.

Response

Once a request has been sent, we can see the response code 200 OK populated in the Response. This signifies a successful request and a correct endpoint.