{"service":"ga4-api","docs":"/docs (Swagger UI) | /openapi.json (spec)","endpoints":["GET /api/summary","GET /api/timeseries","GET /api/top-pages","GET /api/traffic-sources","GET /api/channels","GET /api/devices","GET /api/countries","GET /api/realtime","POST /api/report"],"commonQueryParams":{"days":"atalho: ultimos N dias (ex: days=7)","startDate":"YYYY-MM-DD ou relativo GA4 (ex: 28daysAgo)","endDate":"YYYY-MM-DD ou relativo GA4 (ex: today)","limit":"numero de linhas (max 250)"}}