Legacy documentation: Rust Libraries
Rust is used as a key part of the Radix stack, and is published to crates.io with each release.
You may also wish to read the ManifestBuilder rust docs on docs.rs(https://docs.rs/radix-transactions/latest/radixtransactions/builder/struct.ManifestBuilder.html).
You can use the radix-transactions(https://docs.rs/radix-transactions/latest) crate to build transactions.