curl --request GET \
  --url https://api.alphafeed.org/v1/instruments \
  --header 'X-API-Key: <api-key>'

{
  "data": [
    {
      "code": "600519",
      "exchange": "SH",
      "name": "贵州茅台",
      "symbol": "600519.SH",
      "ext": {
        "float_shares": 123,
        "limit_down": 123,
        "limit_up": 123,
        "listing_date": "2023-12-25",
        "tick_size": 123,
        "total_shares": 123,
        "type": "<string>"
      }
    }
  ]
}