Can I call an API from form on ServiceNow?

[susmita2]

Hello, I'm new to ServiceNow. I'm working on integrations and requirement is can we make a call a third party API from ServiceNow via form(UI, by clicking on button, should call API and get response/render on UI). Can we do this? any reference or videos are helpful.

Thanks in advance.

[Martin Ivanov]

You can do it in UI action. You'll have to define a rest message with the details of the tird party - url, auth, parameters etc. Then when you define the REST message and the method, open the method and you'll se a button "Preview script usage" There will be an example on how to call this.

Please refer to the amazing series of Chuck Tomasi: https://developer.servicenow.com/blog.do?p=/post/learn-integrations-now-platform/

Please Mark Correct AND Helpful. Thanks!

[susmita2]

Thanks for the response, 

Can't we do that in App Engine Studio....UI Builder?

like creating some fields and on clicking button, it should call an API and render in UI.

[Sai Kumar B]

@susmita 

Yes you can do, try the below approach

1.) Create REST message with an Endpoint

Reference - https://docs.servicenow.com/bundle/rome-application-development/page/integrate/outbound-rest/task/t_...

2.) Define a REST message HTTP headers

Reference - https://docs.servicenow.com/bundle/rome-application-development/page/integrate/outbound-rest/task/t_...

3.) Define a REST message HTTP method

Reference - https://docs.servicenow.com/bundle/rome-application-development/page/integrate/outbound-rest/task/t_...

Once you define all the above, In the REST message record you can see the "Preview script usage" related link. Click that to preview the code and copy/paste the code at any server-side script to retrieve data from third-party API

Perfect Example - https://community.servicenow.com/community?id=community_article&sys_id=ad8ad908dbdc7b44a39a0b55ca961...

[Martin Ivanov]

This somehow repeats what I've written above.