From the dashboard, you can view and regenerate API keys.
REQUEST HEADER
Every request header is authorized using your API key.
Below is a screenshot of the dashboard > developer page. The Secret Key is for sandbox or live environments in the Apps.
Your request header should look like this:

BASE URL
All API requests made must include a base URL. Below are the base URLs for each environment.
SANDBOX ==> https://api.pandascrow.io/sandbox/index
PRODUCTION ==> https://api.pandascrow.io/v1/index