Searching Jive from SharePoint is supported via the Jive API. If you want to be able to search SharePoint from Jive, you need to enable search and ensure that Jive can connect to your SharePoint search URL.
Jive search from SharePoint, which is supported via the Jive API, does not require any additional setup. Enabling users to search SharePoint from the Jive community requires you to provide a search URL where SharePoint search results can be displayed. You'll also need to set up identity mapping correctly to establish each user's search permissions when searching across Jive and SharePoint.
Search takes place on demand when a user searches: there is no initial search indexing of SharePoint content and no associated performance cost.
When you set up search, an OpenSearch definition is automatically created in Jive.