...
Edit your application entry or click the key ( ) on your application’s card to copy the Client Secret to your clipboard.
When you configure your application to send a request, add the following Authorization request header:
For an API published with OAS 2.0:
Code Block Authorization: Bearer <client secret>
For an API published with OAS 3.0:
Code Block Authorization: <client secret>
Replace
<client secret>
with the value stored in your clipboard.
IMPORTANT: This must be the only Authorization request header in your application.
...