How can I pull data from another website?

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We fill in the username and pass part. We press the try it out button.

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I want it to take the data from the FullTokenString part and add it to the Authorization part in picture-3.

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I want it to automatically write “example” in the path part. then the try it out button will be pressed.
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I want to publish the data in the “value” field in the “response body” section on my own website.
Can you help with the algorithm or software to run this?