MCP Server for Week3 of GenAI

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Goto: https://finnhub.io/ and sign-up for a free API key. This API key will be used in the program to access finnhub APIs.

Goto clone->codespaces. This will open the web IDE where we can make the subsequent changes.

In the IDE that opens, create a new .env file (by right clicking on the files pane) and add the following lines (with correct keys):

FINNHUB_API_KEY=xxxxx
GEMINI_API_KEY=xxxxxx

Open terminal and type these commands:

• uv venv
• source .venv/bin/activate

You’re now ready to run the MCP client and servers. Run client using: uv run mcp_client.py and click “Open in browser”.

On the new browser window that opens, use the gradio UI to communicate with your App. MCP inspector tool: npx @modelcontextprotocol/inspector

###Appendix Free APIs on finnhub:

print(finnhub_client.company_basic_financials('AAPL', 'all'))
print(finnhub_client.company_earnings('TSLA', limit=5))
print(finnhub_client.company_news('AAPL', _from="2020-06-01", to="2020-06-10"))
print(finnhub_client.company_peers('AAPL'))
print(finnhub_client.company_profile2(symbol='AAPL'))
print(finnhub_client.country())
print(finnhub_client.crypto_exchanges())
print(finnhub_client.crypto_symbols('BINANCE'))
print(finnhub_client.filings(symbol='AAPL', _from="2020-01-01", to="2020-06-11"))
print(finnhub_client.financials('AAPL', 'bs', 'annual'))
print(finnhub_client.financials_reported(symbol='AAPL', freq='annual'))
print(finnhub_client.forex_exchanges())
print(finnhub_client.forex_symbols('OANDA'))
print(finnhub_client.general_news('forex', min_id=0))
print(finnhub_client.ipo_calendar(_from="2020-05-01", to="2020-06-01"))
print(finnhub_client.quote('AAPL'))
print(finnhub_client.recommendation_trends('AAPL'))
print(finnhub_client.stock_symbols('US')[0:5])
print(finnhub_client.earnings_calendar(_from="2020-06-10", to="2020-06-30", symbol="", international=False))
print(finnhub_client.covid19())
print(finnhub_client.fda_calendar())
print(finnhub_client.symbol_lookup('apple'))
print(finnhub_client.stock_insider_transactions('AAPL', '2021-01-01', '2021-03-01'))
print(finnhub_client.stock_visa_application("AAPL", "2021-01-01", "2022-06-15"))
print(finnhub_client.stock_insider_sentiment('AAPL', '2021-01-01', '2022-03-01'))
print(finnhub_client.stock_lobbying("AAPL", "2021-01-01", "2022-06-15"))
print(finnhub_client.stock_usa_spending("LMT", "2021-01-01", "2022-06-15"))
print(finnhub_client.market_holiday(exchange='US'))
print(finnhub_client.market_status(exchange='US'))

import yfinance as yf

@mcp.tool()
def get_stock_history(ticker: str) -> dict:
    """
    Gets last 7 days of historical price for a given stock ticker.
    API: stock = yf.Ticker(ticker)
    """
    try:
        stock = yf.Ticker(ticker)

        history = stock.history(period="7d")

        if history.empty:
            return {"error": f"no history found for this ticker {ticker}"}

        history.reset_index(inplace=True)
        dates = history['Date'].dt.strftime('%Y-%m-%d').tolist()
        prices = history['Close'].tolist()

        return {"dates": dates, "prices": prices}
    
    except Exception as e:
        return {"error": str(e)}