Krypteia is a newly released cryptographic workspace written in pure Rust, which includes both post-quantum and classical cryptography primitives without any external dependencies. Designed for constant-time operations and with an embedded-first approach, it targets various microcontrollers and is structured for lab-class evaluation. The author emphasizes the tool's method of development involving AI assistance while maintaining the correctness and constant-time nature through extensive testing. The initial release is not production-ready and lacks a third-party audit, but seeks critical feedback on its side-channel work.