Log into http://coinbase.com and Click your profile in the upper right hand corner.
Click on "My Preferences" > then scroll down the list and select on the "API" tab.
Alternatively, may also click this link to be taken directly to your API Settings page: https://www.coinbase.com/settings/apiClick "+ Create API Key with Coinbase Developer Platform (recommended)"
Enter 2-step verification code if prompted
Enter an API nickname (eg: NODE40_API)
Ensure “View (read-only)” is the only box selected (as pictured above). Click “Create & Download”.
Navigate to NODE40. Click +New Ledger in your NODE40 account.
Enter your API details from http://coinbase.com on the NODE40 screen. (API/SECRET/NICKNAME).
Be sure to copy and paste the entirety of all API/SECRET keys provided by Coinbase or it will not be accepted by NODE40 Balance.Click "Create" in NODE40 to start your import.