# Nix Daemon Protocol The Nix Daemon protocol is what's used to communicate with the `nix-daemon`, either on the local system (in which case the communication happens via a Unix domain socket), or with a remote Nix (in which this is tunneled over SSH). It uses a custom binary format which isn't too documented. The subpages here collect serve as an in-depth detail about some of the inner workings, data types etc. A first implementation of this exists in [griff/Nix.rs](https://github.com/griff/Nix.rs/tree/main). Work is underway to port / factor this out into reusable building blocks into the [nix-compat] crate.