I think what you're referring to is called a "headless CMS", which is an interesting idea and something we can discuss as the project evolves. It may not be a g

I think what you're referring to is called a "headless CMS", which is an interesting idea and something we can discuss as the project evolves. It may not be a good candidate for core, but a plugin that outputs the data in the format you're looking for wouldn't be that hard to build (once plugins land). For example, the existing internal API has a backup method that exports all MySQL tables to JSON files. The heavy lifting is already done for you. (It also wraps all your themes and uploads into a TAR along with the JSON files so you have a real, full backup — not just your post content.) I'd love to explore this more down the road :)