{"service":"MetaTech WhatsApp API","version":"4.1.1-prod","engine":"Baileys","status":"production","endpoints":{"health":"GET /health","serverTime":"GET /api/server-time","sessions":"GET /api/sessions","initialize":"POST /api/sessions/initialize","reactivate":"POST /api/sessions/:id/reactivate","qr":"GET /api/sessions/:id/qr","qrPng":"GET /api/sessions/:id/qr.png","status":"GET /api/sessions/:id/status","disconnect":"POST /api/sessions/:id/disconnect","send":"POST /api/sessions/:id/send","sendMedia":"POST /api/sessions/:id/send/media (multipart form-data: to, caption, file)","sendBulk":"POST /api/sessions/:id/send/bulk","schedule":"POST /api/sessions/:id/send/schedule","chats":"GET /api/chats (filters)","chatMessages":"GET /api/chats/:jid/messages","deleteChat":"DELETE /api/chats/:jid?sessionId=ID","cleanupUnresponded":"POST /api/chats/cleanup-unresponded","messages":"GET /api/messages"},"authentication":"Required: X-API-Key header"}