Blog (Typo) integration with other websites

Dear all,

After some thought regarding the common problem of developing my own
blog engine or use one the the existing alternatives, I decided in
favor of Typo. Then, instead of integrating it into my Rails app, I
decided to deploy 2 separate applications (distinct sub domains). The
problem now is:

What is the best approach to obtain the list of the latest posts made
to the blog from within the other rails app?

Cheers, Sazima