Ask HN: "Hacker" friendly products for managing finances?

Is anyone aware of a good product for managing finances that is hacker-friendly -- specifically, I'd like one that provides an API that allows me to automate custom queries and have more control over the categorization of expenses.

I know there are security concerns since this is financial data we're talking about, but stripe did such a good job of providing a hacker-friendly product for accepting payments -- I'd love it if there were something like this for managing my finances.

Any ideas? What do other hackers use to manage their finances?