GET /v1/stock/basic-info

curl -X GET "https://api.alphafin.x-pai.com/v1/stock/basic-info?symbol=600519" \
  -H "X-API-KEY: your_api_key_here"

curl -X GET "https://api.alphafin.x-pai.com/v1/stock/basic-info?symbol=600519,000858,300750" \
  -H "X-API-KEY: your_api_key_here"

curl -X GET "https://api.alphafin.x-pai.com/v1/stock/basic-info?symbol=600519&fields=symbol,name,industry,market_cap" \
  -H "X-API-KEY: your_api_key_here"

{
  "code": 200,
  "message": "success",
  "data": {
    "symbol": "600519",
    "name": "贵州茅台",
    "exchange": "SSE",
    "exchange_name": "上海证券交易所",
    "industry": "食品饮料",
    "subindustry": "白酒",
    "listing_date": "2001-08-27",
    "delisting_date": null,
    "status": "上市",
    "market_cap": 2187650000000,
    "circulating_market_cap": 2187650000000,
    "issued_shares": 1256197800,
    "circulating_shares": 1256197800,
    "par_value": 1.0,
    "description": "贵州茅台酒股份有限公司是中国贵州省仁怀市茅台镇生产和销售茅台酒的上市公司。",
    "website": "http://www.moutaichina.com/",
    "region": "贵州",
    "address": "贵州省仁怀市茅台镇",
    "chairman": "丁雄军",
    "general_manager": "李静仁",
    "secretary": "蒋焰",
    "established_date": "1999-11-20",
    "registered_capital": 1256197800,
    "organization_code": "915200002144039458",
    "business_scope": "酱香型白酒的生产与销售；饮料、食品、包装材料的生产、销售；防伪技术开发、信息产业相关产品的研制、开发；酒店经营管理、住宿、餐饮、娱乐、洗浴及停车场管理服务（限下属子公司经营）等。"
  }
}

{
  "code": 200,
  "message": "success",
  "data": [
    {
      "symbol": "600519",
      "name": "贵州茅台",
      "exchange": "SSE",
      "exchange_name": "上海证券交易所",
      "industry": "食品饮料",
      "subindustry": "白酒",
      "listing_date": "2001-08-27",
      "delisting_date": null,
      "status": "上市",
      "market_cap": 2187650000000,
      "circulating_market_cap": 2187650000000,
      "issued_shares": 1256197800,
      "circulating_shares": 1256197800,
      "par_value": 1.0,
      "description": "贵州茅台酒股份有限公司是中国贵州省仁怀市茅台镇生产和销售茅台酒的上市公司。"
      // 更多字段...
    },
    {
      "symbol": "000858",
      "name": "五粮液",
      "exchange": "SZSE",
      "exchange_name": "深圳证券交易所",
      "industry": "食品饮料",
      "subindustry": "白酒",
      "listing_date": "1998-04-27",
      "delisting_date": null,
      "status": "上市",
      "market_cap": 578023000000,
      "circulating_market_cap": 578023000000,
      "issued_shares": 3881608005,
      "circulating_shares": 3881608005,
      "par_value": 1.0,
      "description": "宜宾五粮液股份有限公司是中国四川省宜宾市的一家白酒生产企业。"
      // 更多字段...
    },
    {
      "symbol": "300750",
      "name": "宁德时代",
      "exchange": "SZSE",
      "exchange_name": "深圳证券交易所",
      "industry": "电子",
      "subindustry": "电池",
      "listing_date": "2018-06-11",
      "delisting_date": null,
      "status": "上市",
      "market_cap": 1065340000000,
      "circulating_market_cap": 823263000000,
      "issued_shares": 2329474028,
      "circulating_shares": 1800574028,
      "par_value": 1.0,
      "description": "宁德时代新能源科技股份有限公司是全球领先的锂离子电池供应商。"
      // 更多字段...
    }
  ]
}

{
  "code": 200,
  "message": "success",
  "data": {
    "symbol": "600519",
    "name": "贵州茅台",
    "industry": "食品饮料",
    "market_cap": 2187650000000
  }
}