Quote from: Stephen Gornick on November 01, 2012, 03:30:04 AM

Quote from: piuk on November 01, 2012, 01:49:16 AM

- Ability to supply a private key directly to the API to send funds without needing a My Wallet account.

The instructions for that:

Quote from: piuk on October 30, 2012, 09:37:11 PM

You can now replace the guid in the send api (https://blockchain.info/api/api_send) with a Hex encoded private key.

https://blockchain.info/merchant/4d6c9dff493fcd2da9508e01c8b13461d37e3d8b6df1732942d3257874051362/payment?to=$address&amount=$amount

$address = destination bitcoin address.
$amount = amount to send in satoshi.

So what happens to the amount remaining if I am sending less than the available input(s) used? Is it returned back to that address from the private key?