We'd like our site on Helpjuice to be a hub for finding all kinds of content about our products. For example, we use a 3rd-party to house gated learning content, including interactive courses, collections of learning content, and a customer community. I'd like users to be able to find results from this LMS when they search on our Helpjuice KB. (The LMS has a Search endpoint in their REST API).

Even if this required engineering on our side to build the API connection, having the ability to add 3rd-party content to the search modal would be great. And results wouldn't necessarily have to be "integrated" into the native HJ search results. A separate section or tab in the search modal would be fine.