Yahoo Finance MCP Server

Instructions

Implementation Reference

• server.py:135-149 (handler)

  The main handler function that fetches the stock profile data from the Financial Modeling Prep API using the ticker symbol and returns it as JSON.

  async def get_stock_info(ticker: str) -> str:
      """Get stock information for a given ticker symbol"""
      api_key = os.environ.get("FMP_API_KEY")
      if not api_key:
          return "Error: FMP_API_KEY environment variable not set."
  
      url = f"https://financialmodelingprep.com/api/v3/profile/{ticker}"
      try:
          resp = requests.get(url, params={"apikey": api_key}, timeout=10)
          resp.raise_for_status()
          data = resp.json()
      except Exception as e:
          return f"Error: getting stock information for {ticker}: {e}"
      return json.dumps(data[0] if isinstance(data, list) and data else data)

• server.py:126-134 (registration)

  The decorator that registers the 'get_stock_info' tool with FastMCP, including the name and description with input schema details.

  @fmp_server.tool(
      name="get_stock_info",
      description="""获取公司概况及关键财务指标。
  
  参数说明：
      ticker: str
          股票代码，例如 "AAPL"
  """,
  )

• server.py:127-134 (schema)

  The tool description providing input schema: ticker as str.

      name="get_stock_info",
      description="""获取公司概况及关键财务指标。
  
  参数说明：
      ticker: str
          股票代码，例如 "AAPL"
  """,
  )