You can access the Stream API by default using your Delayed Application Key.
Please note: Stream API data will be conflated when returned using the Delayed App Key. This means that you will receive any changes that have occurred in the last 3 minutes in a single message every 3 minutes.
For access to the Stream API using a Live App Key, your account must be fully verified in line with our KYC policy and funded.
If you wish to consume live Stream API data for trading purposes you'll require a Live Application Key.
To apply for a Live Application key please click here and follow the instructions.