Cards are not just generated by AI, but they can also use AI themselves to modify or create new content based on what they see. Like this startup tinder game, made on top of the YC Startup Directory. The card is generating a profile description for each company in the site.

Creating a card is simple. All you need is to select what part of the site you want to use as a "live database" and then use natural language to describe what you want the card do or look like.