{ "method": "tools/call", "params": { "name": "analytics_visitors", "arguments": { "project": [ "string" ], "org": "string", "service": "string", "since": "string", "domain": "string" } } }
analytics_visitorsTOOLvisitor.id (cookie strada_vid). First visits are unique
visitors whose first pageview is in the same date window, from the pages MV
FirstVisits column. Returning = unique minus first. Older data without
visitor.id still counts via session.id fallback.