Coinbase mercant ID and security key?

So I'm playing around with a site and it has integrated Coinbase for payments, and I need the "mercant id" and "security key" from my coinbase account.

I looked around in my Coinbase account, I also registered on Commerce.Coinbase.com, and I googled. I can't for the life of me figure out how to find this information.

I use Coinpayments on another site and it was much easier to get this info.

Can anyone tell me how to find it?

Thanks