Stock Research

A lightweight MCP (Model Context Protocol) server that provides stock research tools powered by yfinance. Works with any MCP-compatible client, including GitHub Copilot in VS Code.

Supports Japanese stocks (TSE) and US stocks out of the box.

Tools

Tool	Description
get_stock_info	Get current price, PE/PB ratios, dividend yield, and other fundamentals
get_dividend_history	Get dividend payment history with annual totals
screen_high_dividend	Screen multiple tickers for high-dividend quality (consecutive increases, revenue trend)
get_valuation_summary	Multi-model fair value calculation (DDM/DCF/PER/PBR/NAV) with median composite

Quick Start

Option 1: VS Code + GitHub Copilot (recommended)

Add to .vscode/mcp.json in your workspace:

{
    "servers": {
        "stock-research": {
            "type": "stdio",
            "command": "python",
            "args": ["path/to/mcp_stock_server/server.py"]
        }
    }
}

Then ask Copilot things like:

• "What's Toyota's current stock price?" → calls get_stock_info("7203")
• "Show me VYM's dividend history" → calls get_dividend_history("VYM")
• "Screen these for high dividends: 8306, 9433, 8591" → calls screen_high_dividend
• "NTTの理論株価を教えて" → calls get_valuation_summary("9432")

Option 2: Install as a package

pip install -e ./mcp_stock_server

Then use the CLI entry point in your MCP config:

{
    "servers": {
        "stock-research": {
            "type": "stdio",
            "command": "mcp-stock-research"
        }
    }
}

Requirements

• Python 3.11+
• Internet connection (yfinance fetches data from Yahoo Finance)

How it works

Stock code resolution

• Japanese stocks: Enter a 4–5 digit code (e.g., 7203) → automatically appended with .T for Tokyo Stock Exchange
• US stocks: Enter a ticker symbol as-is (e.g., AAPL, VYM)

Example output

get_stock_info("7203")

{
    "symbol": "7203.T",
    "name": "Toyota Motor Corporation",
    "sector": "Consumer Cyclical",
    "price": 2845.0,
    "currency": "JPY",
    "pe_ratio": 8.5,
    "pb_ratio": 1.1,
    "dividend_yield_pct": 2.81,
    "timestamp": "2026-04-23T10:30:00"
}

get_dividend_history("VYM")

{
    "symbol": "VYM",
    "name": "Vanguard High Dividend Yield ETF",
    "price": 120.5,
    "dividend_yield_pct": 3.12,
    "annual_dividends": {
        "2022": 3.25,
        "2023": 3.48,
        "2024": 3.61,
        "2025": 3.72,
        "2026": 1.85
    },
    "total_payments": 18,
    "latest_dividend": {
        "date": "2026-03-25",
        "amount": 0.95
    }
}

License

MIT