Agent pattern or Agent architecture.
We want access to functionality or data offered by and application or database, but the application/database does not offer the endpoints we want and we do not want to modify the existing application/database.
Incoming traffic is not possible or unwanted due to firewalls and routing policies.
Implement a standalone application with integrates with the application or database you want to extend with new endpoints. The application will act as a communication proxt
This pattern was (to my knowledge) first described by Thor Henning Hetland June 2015.