After logging into Ellucian Customer Center https://login.ellucian.com/, navigate to tools->Ethos Integration as show below

Next, click on the settings (gear) icon toward the top right corner of the screen and choose the environment to need, as shown below.

When you select your environment a pop window (shown below) will be displayed. We need to gather more information on what this pop up window controls, but for now just close it.

Now click on APPLICATIONS in the top menu bar.

Finally click on the Application that you need research/work on as shown below.

From here you can retrieve the applications API key(s). Create new keys, delete keys, etc.
