Basalt

A synthetic data generator that guarantees deterministic output: the same input specification and seed will always produce identical results. It's for engineers who care about reproducibility, schema stability, and test reliability.

This project treats synthetic data as compiled output, not random samples. If your tests, pipelines, or analytics depend on stable data, this tool is built for you.

same input schema + same constraints +same seed = identical output. Always.

It's lightweight, simple and boringly written.