how do i creat a api key in magento 2
Hi @joe2014,
I'm not sure if I'm understanding the question but if you want to create API credentials to access to Magento, you'll find the option on System -> Extensions -> Integrations.
If you want more information you can start with the official documentation: http://devdocs.magento.com/guides/v2.1/get-started/bk-get-started-api.html