We use Atlassian JIRA here and enable lookup UI on our ListView macro

Live DEMO below:

We use ListView with custom body layout, like this:

The service we use is Atlassian JIRA and it is defined in ConfiDoc configurations like this:

Very simple, no auth and uses just one parameter [KEY]

We use it with ConfiDoc's ListView macro 

We have also enabled default lookup UI (with a bit of customizations over the default texts and labels)

And the result you can see on the top of this page. Welcome to ConfiDoc!