MCP and RAG: As mentioned in the video, MCP tools have conceptual overlap with RAG (Retrieval-Augmented Generation). RAG is a technique where an LLM retrieves relevant information from external sources and uses that information to augment its response generation. With MCP tools, the LLM similarly retrieves data from your server through tool calls, then uses that data to enhance its responses—making MCP a form of RAG architecture.