Check the Authorization guide on how to get an OAuth2 token, with the following scope:

dpv:FraudPreventionAndDetection#kyc-match:match

Create an app on our Sandbox to get credentials and retrieve tokens so you can perform API calls to our operators' production environments, or use the following convenience token to test in mock mode:

mock_sandbox_access_token

Language
Credentials
OAuth2
URL
Click Try It! to start a request and see the response here!