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from mcp.server.fastmcp import FastMCP
import yfinance as yf
# Initialize the MCP Server
import os
port = int(os.environ.get("PORT", "8001"))
mcp = FastMCP(
name="Stock Market Data Server",
description="Provides tools for fetching historical stock prices and market data with real-time updates via SSE.",
host="0.0.0.0",
port=port,
stateless_http=True,
)
@mcp.tool()
async def get_historical_stock_data(ticker: str) -> str:
"""
Fetches recent historical stock data (Open, High, Low, Close, Volume) for a given stock ticker.
The input must be a single, valid stock ticker symbol (e.g., 'TSLA').
Returns data for the last 30 days.
"""
try:
stock = yf.Ticker(ticker)
# Fetch data for the last 30 days
hist_data = stock.history(period="30d")
if hist_data.empty:
return f"No stock data found for ticker {ticker}."
return f"Recent stock data for {ticker}:\n{hist_data.to_string()}"
except Exception as e:
return f"An error occurred while fetching stock data: {e}"
@mcp.resource("docs://ohlc_definitions")
def get_ohlc_definitions() -> str:
"""Provides definitions for standard stock data columns (OHLCV)."""
return """
- Open: The price at which a stock first traded upon the opening of an exchange on a given day.
- High: The highest price at which a stock traded during the course of a day.
- Low: The lowest price at which a stock traded during the course of a day.
- Close: The last price at which a stock traded during a regular trading day.
- Volume: The total number of shares traded for a stock in a day.
"""
if __name__ == "__main__":
# Use streamable HTTP transport with MCP endpoint
print(f"Stock Data Server running on http://localhost:{port}")
print("MCP endpoint available at:")
print(f"- http://localhost:{port}/mcp")
mcp.run(transport="streamable-http")
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