Two cities, side by side

Pick any two indexes. The page puts their headline numbers next to each other: sites scanned, who takes bookings or orders on their own site, who turns AI crawlers away, who scores A or B, the menus, the channels, the builders, the vendors, the assistants, and the months.

Each comparison has a Markdown twin (?format=md), JSON at /api/compare/{a}/{b} and a share image. Agents: the MCP tool compare_cities, or "compare lisbon and porto" over A2A.