api to download sales and transaction data

I need to sync the order financial data from sales and transaction with our system automatically. Is there a api for me to pull this info?

Probably doesn’t help now, but for going forward, you can implement Roku push notifications to get notified of every transaction (http://sdkdocs.roku.com/display/sdkdoc/ … ifications).
Looking backwards, your best bet is probably going into your developer account and exporting the transaction details as a CSV.