curl --request POST \
  --url https://api.anysite.io/api/morningstar/quotes/key-metrics \
  --header 'Content-Type: application/json' \
  --header 'access-token: <api-key>' \
  --data '
{
  "symbol": "<string>",
  "timeout": 300
}
'

[
  {
    "id": "<string>",
    "@type": "@morningstar_key_metrics",
    "revenue_3year_growth": {
      "@type": "@morningstar_key_metric_value",
      "stock_value": 123,
      "industry_average": 123
    },
    "net_income_3year_growth": {
      "@type": "@morningstar_key_metric_value",
      "stock_value": 123,
      "industry_average": 123
    },
    "operating_margin_ttm": {
      "@type": "@morningstar_key_metric_value",
      "stock_value": 123,
      "industry_average": 123
    },
    "net_margin_ttm": {
      "@type": "@morningstar_key_metric_value",
      "stock_value": 123,
      "industry_average": 123
    },
    "roa_ttm": {
      "@type": "@morningstar_key_metric_value",
      "stock_value": 123,
      "industry_average": 123
    },
    "roe_ttm": {
      "@type": "@morningstar_key_metric_value",
      "stock_value": 123,
      "industry_average": 123
    },
    "debt_to_equity": {
      "@type": "@morningstar_key_metric_value",
      "stock_value": 123,
      "industry_average": 123
    },
    "free_cash_flow_ttm": 123,
    "free_cash_flow_date": "<string>"
  }
]