With Tableau Public MCP connected, Claude can download a public workbook and dig into its calculated fields, LOD expressions and sheet structure. Here, Yehwan Hwang explains why a bare “analyze this dashboard” request usually disappoints, and how to frame it better: state your purpose, separate confirmed facts from inference, ask for a Markdown file, and narrow down in follow-ups. A handy guide for anyone who learns by reverse-engineering great dashboards.