I dream, that, maybe, sites which have something like "news feed" could export content not only in human-readable HTML/CSS/JS but, maybe, some machine-readable

I dream, that, maybe, sites which have something like "news feed" could export content not only in human-readable HTML/CSS/JS but, maybe, some machine-readable format too? And such plugins, software products and extensions, as Devo will consume this unambiguous and common format, and will not need custom APIs, APIs keys, backends, HTML scraping & parsing and all custom work for each site they support, but one common way for all sites? Is it possible on our technological level, or it is wild dream? OH, WAIT! RSS!