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This is great! I too am working behind the scenes (nothing on Github yet) on a set of scrapers that pull in data from various financial institutions (my bank, a credit union, a CC account, ect.) along with a 'manager' application that recieves results from these scrapers and displays the data to me. That's step 1. Next I'd like to fully automate the paying of my bills and setting up arbitrary actions based on certain…
You may want to check out https://github.com/bankbotsbank/bankbotsbank
I'm currently using protractor (webdriver) for my crawler but I would open to switching to nightmare to be compatible with you as long as I am able to get that stack running on a pi.