curl -X GET '/unified-transactions/analytics-with-fees' \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'

{
  "success": true,
  "data": {
    "total_transactions": 450,
    "total_volume_usd": 125000.00,
    "total_fees_usd": 312.50,
    "by_type": {
      "deposit": { "count": 200, "volume": 80000, "fees": 0 },
      "withdrawal": { "count": 100, "volume": 30000, "fees": 150 },
      "swap": { "count": 80, "volume": 10000, "fees": 125 },
      "card_transaction": { "count": 50, "volume": 3000, "fees": 22.50 },
      "agentic_transaction": { "count": 20, "volume": 2000, "fees": 15 }
    },
    "period": {
      "from": "2026-03-01T00:00:00Z",
      "to": "2026-04-01T00:00:00Z"
    }
  }
}