Today when a request is to made to Port's API using a standard API call (meaning, not with an integration), the Port user info in Port just shows Rest API.
As customer usage of Port increases, they are likely to have more than a single backend that makes requests to Port API to send information, and it would be helpful to tag the source of each of those requests so that they appear in the audit log in a clear manner.
An alternative could be multiple Client ID and Secret pairs, which each can be tagged as a specific "app" with it's own label in the Port user info column