To make an authenticated call to a Marketing Cloud Einstein service, obtain a Marketing Cloud OAuth access token. For server-to-server API integrations, review Access Token for Server-to-Server Integrations. For web or public app integrations, review Access Token for Web and Public App Integrations.

After you get an access token, use it make your request. You'll need your Marketing Cloud account’s tenant-specific subdomain.

RegionstringRequired. A region identifier that matches the region of your Marketing Cloud account. Possible values are: us, eu
AuthorizationstringRequired. A string that starts with SFMC and the access_token you obtained from Marketing Cloud. Ensure there is a space between the two values.
X-API-TSEstringRequired. Your tenant-specific subdomain.