Capital One provides this toy API: http://api.reimaginebanking.com If you want to create an app or startup that does anything involving banking, look elsewhere. The chances you will get approval from banks and regulators are zero. To have a halfway decent shot, you would need years, significant industry connections, expensive lawyers on retainer in New York and Washington, and the ability to prove you have cash on ha…
Yeah, basically banks don't want a public api because security concerns. So people get around it by logging into the user's bank and scraping. Which is much less secure than just providing a secure api to begin with... All good intentions have consequences.
With it you can basically create financial scrapers by just browsing the web. No API in the meantime but works just fine.