Your trading accounts are separate from your Coinbase accounts. See Deposit from Coinbase account for documentation on how to deposit funds to begin trading.
This endpoint requires either the "view" or "trade" permission.
This endpoint has a custom rate limit by profile ID: 25 requests per second, up to 50 requests per second in bursts
When you place an order, the funds for the order are placed on hold. They cannot be used for other orders or withdrawn. Funds will remain on hold until the order is filled or canceled.