Quote David Goulet on Tor Project issue tracker:
It is not even clear that
arti
will actually have a ControlPort as we know it.
Quote Arti 1.1.5 is released: Onion Services, RPC, and a security patch | The Tor Project
work on a new RPC API (a successor to C Tor’s “control port”) that will give applications a safe and powerful way to work with Arti without having to write their code in Rust or link Arti as a library (unless they want to).