"A system for managing personal knowledge and organizing information" matching MCP connectors:

ShelfAtlas — Danish grocery catalog and shelf data as MCP tools. Ask "where is Pepsi Max cheapest right now?" and get live, structured answers: current offers across every major Danish chain, nearest-store geo search, product name and EAN lookup, and a purpose-built find_cheapest_offers tool. Community shelf-stock signals included where approved. Free tier; docs at https://shelfatlas.com/docs, keys at https://app.shelfatlas.com.