RAG is an elaborate Python server designed to enhance retrieval-augmented generation (RAG) by offering multiple sophisticated search modalities for textual knowledge bases. It leverages PostgreSQL with `pgvector` for efficient storage and retrieval of text embeddings, aiming to provide nuanced search capabilities beyond simple keyword matching. Built on the `fastmcp` framework, it integrates seamlessly with other AI agents, enabling complex, interconnected AI workflows. Its design embraces complexity to deliver specialized search functions like semantic, question/answer, and style-based retrieval, making it suitable for users seeking highly customizable and powerful text search solutions.