A .NET source generator and runtime library that lets developers declaratively define data pipelines using attributes. It automatically generates type-safe mapping, merging, and enrichment code at compile-time, handling complex scenarios like multi-repository aggregation and access control injection with zero runtime overhead.

Microservices and AI data pipelines (like RAG systems) have exploded data source complexity. .NET's modern source generators now enable sophisticated compile-time code generation that delivers both developer productivity and runtime performance, making this the perfect time for a next-generation mapping solution.