This illustration shows the Postman application with the GET method selected. The URL is  http://hostname.domain:port/energy/1/api/usage/current/month/4859634. The GET method, the URL, and the Send button are bordered in red, and the Send button is active.

The Headers(2) tab is selected, and it contains two headers. my-key and server appear in two separate key fields. The application key appears in the first value field. The number 5 appears in the value field for the second header. The two headers are bordered in red.