Ask HN: Is there any US bank with a consumer facing API?

The EU is mandating considerable openness including API access for customers this year. PSD2 may come to US customers of international banks.

Afaik https://plaid.com/ allows you to access transaction data

But Plaid doesn't offer banking services, just balance and transaction data from traditional banks (as well as some other services like authentication). Used their API for a side project and recommend it.

Dwolla is another player in this space. https://www.dwolla.com/

Simple Bank allows you to export your transaction data as json, but I don't think they have a public API.

The transcation data you seek is proprietary.

But it's your own transactions.