I'm sure that Mint would love for banks to setup an oAuth type authorization system with real APIs (I can't imagine getting around login systems and screen scraping is something they like doing). However, given that some of my banks still don't support passwords with non [a-Z0-9] characters and AJAX (or even an interface that looks like it's not from the 90s) I'm not holding my breath on them getting around to writing an API for Mint.