How to call an external API interface in ServiceNow?

shiz
Tera Contributor

I want to implement the following function by customizing a UI action button in ServiceNow. Then click this button to call an external API interface. How should it be implemented?

 

It would be great if there was a demonstration example. The external API interface can be any public interface. If I can connect this API, it will be a great help to me.

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