Code Reference

Data Designer is implemented as three installable packages that share the data_designer namespace. The packages are layered: user-facing interface code calls the engine, and the engine consumes declarative config objects.

Package	Namespace	Role
data-designer-config	data_designer.config	Configuration schemas, builder APIs, plugin registration objects, and result schemas.
data-designer-engine	data_designer.engine	Runtime contracts and implementations for generation, seed reading, processing, and MCP tool execution.
data-designer	data_designer.interface	Public entry points for previewing, creating, and inspecting generated datasets.

The dependency direction is interface -> engine -> config. Config objects describe what should happen, engine objects implement how it happens, and interface objects expose the supported public API.