This API doesn't use Akamai's EdgeGrid authentication and doesn't rely on the standard system of provisioning API tokens within Akamai Control Center.
You can either authenticate access to your data on the origin's part, or use the authentication method you configured for your Edge Connect Message Store property:
For JWT, you need to pass the token in your request header. Unless you've specified otherwise, the header name is
X-Akamai-Auth-Token. You can also pass your token in the URL
authparameter. See IoT Token Access Control.
For Mutual Authentication, your authentication validates alongside your connection to the service. You don't need to pass any authentication information in your request.