How to update environment variables based on a response in Postman | Chaining Requests
Sometimes, the response from a request is required first in order to continue with all the other API requests currently stored in your Postman folders. Think of a request that, in order to return results, it requires from you to be authenticated, so a typical workflow would be:
authenticate yourself with a proper username and password;
get an authentication token;
update your other requests to use this new token.
To avoid updating manually all your request headers with the new auth token, you can use environments and variables in Postman.
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