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    Yfinance Mcp Server

    Unofficial MCP server for Yahoo Finance stock data.

    2 stars
    JavaScript
    Updated Aug 28, 2025

    Table of Contents

    • Features
    • Usage
    • getStockHistory
    • Development
    • Contributing
    • License

    Table of Contents

    • Features
    • Usage
    • getStockHistory
    • Development
    • Contributing
    • License

    Documentation

    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.

    json
    {
      "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:

    markdown
    > (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:

    bash
    npm install

    3. Start the development server:

    bash
    npm run dev

    Contributing

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

    License

    ISC License (ISC)

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