CoinLedger only needs "Read" or "View" access to import your trade history. This permission protects your accounts. Learn more about API access in this article here.
Login to your FTX US account.
Click the account icon in the top right corner.
Select API from the menu on the right.
Click Create Read-Only API Key.
Write down your API secret, as it will not be shown after closing the dialog.
Navigate to Step 1. Import. Select Add Account then choose the FTX US tab on CoinLedger. Click on Auto-Import then enter your API Key and API Secret into the correct fields. Click Sync Transactions.