Mint was originally built on the back of Yodlee.com which is something I had a small part in building. I was gone before that deal was.. minted, so I have no idea what the terms were like. My options ended up being worth like $15 and Mint got bought by Intuit, so I'm guessing not great for yodlee.

AFAIK they only used yodlee for the first couple years until they were able to secure their own connections to financial institutions.

Makes me a little sad thinking about how long I've been at this now..