curl --request POST \
  --url https://api.kanarie.xyz/api/v1/data/fundamentals/history \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "metric": "tvl"
}
'

{
  "success": true,
  "error": null,
  "data_source": "defi_llama",
  "data": [
    {
      "period": "2026-03-20",
      "data": {
        "aave": 125000000
      }
    }
  ],
  "metadata": {
    "metric": "tvl",
    "group_by": "protocol",
    "total_periods": 30
  }
}