What is Yfinance Mcp Server

yfinance-mcp-server is an unofficial MCP server designed to access Yahoo Finance stock data, providing a simple interface for retrieving stock market information through the yfinance library.

Use cases

Use cases include fetching historical stock prices for analysis, integrating stock data into financial dashboards, and providing real-time stock information for trading algorithms.

How to use

To use yfinance-mcp-server, you need to configure your MCP client to connect to the server by specifying the command and arguments. An example configuration is provided in the README.

Key features

Key features include the ability to retrieve historical stock data with customizable periods and intervals, ease of use with any MCP client, and being built with TypeScript for enhanced type safety and developer experience.

Where to use

yfinance-mcp-server can be used in financial applications, trading platforms, and any software that requires access to stock market data for analysis or reporting.

yfinance-mcp-server

日本語版

Important Note: This is an unofficial MCP server.

A Message Control Protocol (MCP) server for accessing Yahoo Finance data. This server provides a simple interface to retrieve stock market data through yfinance.

Features

• Get historical stock data with customizable periods and intervals
• Easy to use with any MCP client
• Built with TypeScript for type safety and better developer experience

Usage

Example Cursor MCP Client.

{
  "mcpServers": {
    "yfinance": {
      "command": "npx",
      "args": [
        "@onori/yfinance-mcp-server"
      ]
    }
  }
}

getStockHistory

Retrieves historical stock data for a given symbol.

Parameters:

• symbol (required): The stock symbol (e.g., “AAPL” for Apple Inc.)
• period (required): Time period to fetch data for (e.g., “1d”, “5d”, “1mo”, “3mo”, “6mo”, “1y”, “2y”, “5y”, “10y”, “ytd”, “max”)
• interval (optional): Data interval (“1d”, “1wk”, “1mo”)

Example MCP request:

> (Request) 
Please use the `getStockHistory` tool to fetch the daily stock data for AAPL for the past week (`period`='1w', `interval`='1d'). Then, render the results as a markdown table.

> (Response Example)
I'll help you fetch Apple's stock data and format it nicely as a markdown table.
First, I'll call the getStockHistory tool to fetch the data:

Let me format this data into a more readable markdown table:

| Date | Open | High | Low | Close | Volume |
|------|------|------|-----|-------|---------|
| Mar 31, 2025 | $217.01 | $225.62 | $216.23 | $222.13 | 65.30M |
| Apr 1, 2025 | $219.81 | $223.68 | $218.90 | $223.19 | 36.41M |
| Apr 2, 2025 | $221.32 | $225.19 | $221.02 | $223.89 | 35.91M |
| Apr 3, 2025 | $205.54 | $207.49 | $201.25 | $203.19 | 103.42M |
| Apr 4, 2025 | $193.89 | $199.88 | $187.34 | $188.38 | 125.57M |

Some notable observations from this data:
- The stock showed significant volatility over this period
- There was a sharp decline in the last two trading days
- Trading volume increased substantially during the declining days, with the highest volume (125.57M shares) on April 4th
- The stock price range was from a high of $225.62 to a low of $187.34 during this period
Would you like any specific analysis of this data or would you like to see different metrics?

Development

To set up the development environment:

1. Clone the repository
2. Install dependencies:

npm install

3. Start the development server:

npm run dev

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

ISC License (ISC)