{
  "service": "x-quote.cls.cn",
  "page": "https://www.cls.cn/stock/sh600519",
  "title": "个股资金流 (Stock Fund Flow)",
  "summary": "单只个股的资金流向：主力净流入/出，以及超大单/大单/中单/小单分级资金。判断主力动向。",
  "method": "GET",
  "endpoint": "https://x-quote.cls.cn/quote/stock/fundflow",
  "signing": {
    "required": true,
    "algorithm": "sign = md5( sha1( urlencode(sorted(params)) ) )，params 先并入固定三件套",
    "fixed_params": { "app": "CailianpressWeb", "os": "web", "sv": "8.4.6" },
    "python": "import hashlib,urllib.parse\np=dict(params); p.update({'app':'CailianpressWeb','os':'web','sv':'8.4.6'})\nqs=urllib.parse.urlencode(sorted(p.items()))\nsign=hashlib.md5(hashlib.sha1(qs.encode()).hexdigest().encode()).hexdigest()\nurl=f'{endpoint}?{qs}&sign={sign}'"
  },
  "params": {
    "secu_code": { "type": "string", "required": true, "description": "个股代码", "example": "sh600519" }
  },
  "response": {
    "envelope": "{ code:200, data:{...} }",
    "data_fields": {
      "main_fund_in": "主力流入", "main_fund_out": "主力流出", "main_fund_diff": "主力净额",
      "super_fund_diff": "超大单净额", "large_fund_diff": "大单净额",
      "medium_fund_diff": "中单净额", "little_fund_diff": "小单净额",
      "main_fund_3": "主力近3日"
    }
  },
  "example_call": "见 signing.python，params={'secu_code':'sh600519'}",
  "caveats": ["必须签名"],
  "confidence": 0.85,
  "auto_discovered": true,
  "last_verified": "2026-06-17"
}