I wouldn't hope for this being useable in the US anytime soon! "Teller is available today for Santander UK, Barclays, Natwest, Nationwide, RBS, Isle of Man Bank, and Ulster Bank."

Never?

You need legally available reverse engineering without dmca-hammer to be applied plus PSD2 directive coming soon forcing banks to open.

Those are EU things.

yodlee, mint, quicken, come on. I've had bank transaction information for last 20 years

Mint is readonly. PSD2 and reverse engineered api is not. Also Mint exposes you to the very threat mentioned in top comment, while PSD2 protects you here.

So how about No?