# Google Cloud Client Libraries for Rust - Well Known Types
The Client Libraries for Rust are under active development. We are creating
placeholder crates so we can reference them in our code and tooling.
This package contains well-known types used by many (if not all) Google Cloud
services.
**WARNING:** this crate is under active development. We expect multiple breaking
changes in the upcoming releases. Testing is also incomplete, we do **not**
recommend that you use this crate in production. We welcome feedback about the
APIs, documentation, missing features, bugs, etc.