curl -X GET "https://api.rapidcall.ai/api/analytics?startDate=2026-03-01T00:00:00Z&endDate=2026-03-31T23:59:59Z" \
  -H "Authorization: Bearer YOUR_API_KEY"

{
  "period": {
    "startDate": "2026-03-01T00:00:00Z",
    "endDate": "2026-03-31T23:59:59Z"
  },
  "totalCalls": 1247,
  "totalDuration": 187420,
  "avgDuration": 150.2,
  "avgLatencyMs": 680,
  "latencyP50Ms": 620,
  "latencyP99Ms": 1450,
  "outcomes": {
    "completed": 984,
    "voicemail": 112,
    "no_answer": 67,
    "call_transfer": 43,
    "user_hangup": 31,
    "error": 10
  },
  "callsByType": {
    "inbound": 832,
    "outbound": 315,
    "web": 78,
    "demo": 22
  },
  "dailyVolume": [
    { "date": "2026-03-01", "calls": 38 },
    { "date": "2026-03-02", "calls": 42 },
    { "date": "2026-03-03", "calls": 51 }
  ]
}