curl --request GET \
  --url https://api.halal.sh/v1/etfs/{symbol} \
  --header 'X-API-Key: <api-key>'

{
  "data": {
    "symbol": "SPY",
    "name": "SPDR S&P 500 ETF Trust",
    "purity_percentage": 72.5,
    "holdings_breakdown": {
      "compliant": 289,
      "non_compliant": 156,
      "pending": 58,
      "total": 503
    },
    "analysis_date": "2023-12-25"
  },
  "meta": {
    "request_id": "req_abc123",
    "methodology": "aaoifi-ss21@2024",
    "as_of": "2026-03-08T12:00:00Z",
    "retry_after": 120
  }
}