SMRTR ProgrammingSep 8, 2025Daily.dev

How to Use Postman Scripts to Simplify Your API Authentication Process

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Postman scripts can automate JWT authentication by capturing tokens and storing them for reuse across API requests. By writing simple JavaScript in the Post-response tab, developers can extract tokens from successful sign-in responses and save them as collection variables, eliminating repetitive copy-pasting. This DRY approach streamlines API testing workflows by automatically updating tokens when new authentication requests are made.

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