curl --request GET \
  --url https://api.qclawrouter.com/v1/dashboard/billing/usage \
  --header 'Authorization: Bearer <token>'

{
  "object": "list",
  "total_usage": 2.35,
  "daily_costs": [
    {
      "timestamp": 123,
      "line_items": [
        {
          "name": "<string>",
          "cost": 123
        }
      ]
    }
  ]
}