curl -G https://api.tracklysms.com/api/v2/billing/records \
  -H "X-Api-Key: trk_your_parent_key" \
  --data-urlencode "updatedSince=2026-07-01T00:00:00Z" \
  --data-urlencode "limit=200"

{
  "records": [
    {
      "id": "66a0f7c84a1d4b2e9c3a1f2e",
      "account_id": 1042,
      "external_ids": { "location_id": "loc_west" },
      "charge_type": "usage",
      "trigger_reason": "monthly_billing",
      "status": "succeeded",
      "amount": 42.11,
      "currency": "usd",
      "messages_count": 9000,
      "segments_count": 9300,
      "refund_amount_total": 0.0,
      "refunded_at": null,
      "is_adjustment": false,
      "period_start": "2026-06-01T00:00:00Z",
      "period_end": "2026-07-01T00:00:00Z",
      "created_at": "2026-07-01T00:12:00Z",
      "updated_at": "2026-07-01T00:12:00Z"
    }
  ],
  "pagination": { "limit": 200, "has_more": false, "next_cursor": null }
}