CRChristian Richterinshibui.hashnode.dev·3d ago · 7 min readOne Schema, Ten Systems: What Happened When We Let Users Query 31M Rows in Plain EnglishWe built a financial data MCP server. It sits on 64 years of US stock market data, 31 million daily price records, quarterly financials, daily valuations, 56 technical indicators, SEC filing metadata,00