If you're making calls against the Community, Board, or Blog class, you can get the info you want. However, you have to use very specific methods (within the various classes) to get the information that you mention (Tags, Number of Replies, etc). Once you grab that information, you can store it and parse it however you like with your company's Search tool(s).
When we talk about what can actually be yielded through our API using the "Search" method, this is what you can get:
* Subject / title of post - <subject>
* Time-stamp - <post_time>
* URL to post (for hyperlink) – view_href attribute on <message>
* Author – <author>
* URL to author profile – view_href attribute on <author>
* Message Body – <body> (requires passing an additional parameter to the request - restapi.format_detail=full_list_element)
