Set Bearer Token as Environment Variable in Postman for All APIs

Iroshan Aberathne
3 min readNov 28, 2019

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This article is all about setting up postman configuration for Authentication token as global variable across all api end points.

Create a Environment in Postman

1.Manage Environment

Run postman and go to the manage environment setting tab as shown in following image.

Please refer red color rectangle box.

2. Create New Environment

Then click on Add button to create another custom environment.

3. Environment Details

Once you click on Add button a new window is popped up where you can create a new environment. Enter a environment name in Add Environment text box and enter variable names and initial values. Our environment name is ReportingAPI and have two variable representing localBasedUrl and authToken

4. Create Authentication API

Create a /auth api where authentication http request is generated. At the same time select your custom environment from upper right corner drop down so that custom environment variables which are defined in previous step can be accessed. Please refer below screenshot.

Select Environment
Enter variable name in url

Set Headers

Since authentication request the content-type should be application/json.

Set headers

Setting up post values

Here we are setting username and password parameters as json format because our content type is json.

Setting up post values

Set up Token value to Environment variable

This is the place where we catch the token and store it in environment parameter called authToken. Please note that the token is available in response header but not in response body and the token header name is Token. That is why we use pm.response.headers.get(“Token”) statement.

Store token in environment variable

Test Process

Once you set up everything properly click on send button. Then you will be able to see the token value is properly store in authToken environment variable. Please click on eye button which is prior to setting button so that the environment variable can be seen.

Update Token in environment variable

5. Use Token in other API

Create API end point which uses token to communicate the back end. Refer following screenshot.

Setting up auth token

That’s all you have to do. Then once you call the /auth request the token is available for all other API end points that are in same environment.

Thank You All !!!!

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