MCP Stock Market

A Model Context Protocol (MCP) tool for retrieving stock market data using the Alpha Vantage API. This tool provides access to daily stock market data for any stock symbol through a simple MCP interface.

Requirements

• Node.js v18 or higher
• An Alpha Vantage API key (free tier available)

Setup

1. Install dependencies

npm install

2. Create a .env file based on .env.example and add your Alpha Vantage API key

ALPHA_VANTAGE_API_KEY=your_api_key_here

You can obtain a free API key from Alpha Vantage.

3. Build the project

npm run build

MCP Client Configuration

To use this tool with your MCP client, you need to update your MCP server configuration. Add the following to your client's configuration:

{
  "mcpServers": {
    "stock-market": {
      "command": "node",
      "args": [
        "/ABSOLUTE/PATH/TO/PARENT/FOLDER/mcp-stock-market/build/index.js"
      ]
    }
  }
}

Make sure to replace /ABSOLUTE/PATH/TO/PARENT/FOLDER with the actual absolute path to the parent directory containing this repository.

Available Tools

get-stock-data

Retrieves daily stock market data for a specific stock symbol.

Parameters:

• symbol: Stock symbol (e.g., IBM, AAPL, MSFT, GOOG, AMZN)

Example usage in an MCP client:

@stock-market get-stock-data symbol=AAPL

Example response:

Stock: AAPL
Last Updated: 2025-03-12
Time Zone: US/Eastern

Daily Prices:

Date: 2025-03-12
Open: $178.35
High: $180.13
Low: $177.53
Close: $179.63
Volume: 58,492,206
---

Date: 2025-03-11
Open: $177.99
High: $179.70
Low: $176.86
Close: $178.95
Volume: 62,630,570
---

Development

Project Structure

• src/index.ts - Main application file with MCP server and tools implementation
• build/ - Compiled JavaScript output
• .env - Environment variables (API key)

Commands

• npm run build - Build the TypeScript code

API Usage Notes

This tool uses the Alpha Vantage API to retrieve stock market data. The free tier of Alpha Vantage has the following limitations:

• 25 API calls per day
• 5 API calls per minute

If you need more capacity, consider upgrading to their premium plans.

Troubleshooting

If you encounter issues:

1. Make sure your Alpha Vantage API key is correctly set in the .env file

2. Check that you're using Node.js version 18 or higher

3. Verify that the path in your MCP client configuration is correct

4. Restart your MCP client