An A-share stock data service based on the MCP (Model Context Protocol), with zero configuration, ready to use out of the box, completely free, and requiring no registration. Provides real-time and historical data for the Shanghai and Shenzhen markets, including intraday, minute, daily candlestick data, and common technical indicators. Includes Sina and Tencent as dual data sources with automatic failover. Outputs everything in a unified DataFrame format, suitable for quantitative research, back