MetaWeblogAPI
But the Blogger API has a very simple idea of what a blog post is. It's basically a string. At the same time the blogging tools have matured, and a deeper API was needed. That became immediately evident as soon as we shipped Titles and Links in Radio. The Blogger API is too narrow to carry the new data. People who develop tools said let's have more. I gave it some thought and decided yes, let's do that.