As long as this isn’t outdated then New Release: Vault Phase 1 (real vault) but I’m pretty sure Maidsafe has been updating it. I’ll poke around for more resources.
https://github.com/maidsafe/safe-api
The safe-api is a Rust crate which exposes the SAFE API with all the functions needed to communicate with the SAFE Network and the SAFE Authenticator. If you are developing a Rust application for SAFE, this is all you need as a dependency from your app.