curl --request GET \
  --url https://api.tensormesh.ai/v1/billing/spending/history \
  --header 'Authorization: Bearer <token>'

{
  "buckets": [
    {
      "bucketStart": "2023-11-07T05:31:56Z",
      "amount": {
        "currencyCode": "<string>",
        "units": "<string>",
        "nanos": 123
      },
      "costSaving": {
        "currencyCode": "<string>",
        "units": "<string>",
        "nanos": 123
      }
    }
  ]
}