A-Simple-MCP-Server

Stock Price MCP Server

A simple Model Context Protocol (MCP) server that provides stock price information using the yfinance library.

Overview

This MCP server offers tools to retrieve and compare stock prices. It demonstrates how to build a functional MCP server with multiple capabilities:

• Fetch current stock prices
• Retrieve historical stock data
• Compare prices between different stocks
• Expose stock data as resources

Features

Stock Price Retrieval

Retrieve the latest stock price for any valid ticker symbol. The server handles market closures and invalid symbols gracefully.

Historical Data Access

Get historical stock data in CSV format for different time periods (1 month by default, but customizable).

Stock Comparison

Compare prices between two different stocks with a human-readable output.

Resource Exposure

Access stock information through a resource-based interface using the pattern stock://{symbol}.

Installation

1. Clone this repository
2. Install the required dependencies:

   pip install -r requirements.txt
   

Usage

Starting the Server

Run the server with:

python stock_price_server.py

Available Tools

The server provides the following tools:

1. get_stock_price(symbol): Returns the current price of a stock as a float
2. get_stock_history(symbol, period): Returns historical stock data in CSV format
3. compare_stocks(symbol1, symbol2): Compares prices between two stocks

Using Resources

Resources are accessible using the pattern stock://{symbol} which returns formatted price information.

Error Handling

All functions include robust error handling that returns meaningful error messages when data retrieval fails:

• Invalid symbols return appropriate error messages
• Network issues are properly handled
• Market closures are managed with fallback price information

Requirements

• Python 3.7+
• mcp-server (Model Context Protocol)
• yfinance
• FastAPI
• Uvicorn

License

MIT License