get_current_stock_price
Retrieve the current stock price for a specific company by providing its Yahoo Finance stock symbol. Ideal for real-time financial data tracking.
Instructions
Get the current stock price based on stock symbol.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| symbol | Yes | Stock symbol in Yahoo Finance format. |
Implementation Reference
- src/mcp_yahoo_finance/server.py:21-35 (handler)The core implementation of the get_current_stock_price tool, which fetches and formats the current stock price using yfinance.
def get_current_stock_price(self, symbol: str) -> str: """Get the current stock price based on stock symbol. Args: symbol (str): Stock symbol in Yahoo Finance format. """ stock = Ticker(ticker=symbol, session=self.session).info current_price = stock.get( "regularMarketPrice", stock.get("currentPrice", "N/A") ) return ( f"{current_price:.4f}" if current_price else f"Couldn't fetch {symbol} current price" ) - src/mcp_yahoo_finance/server.py:220-235 (registration)Registers all tools including get_current_stock_price using generate_tool in the MCP server's list_tools method.
@server.list_tools() async def list_tools() -> list[Tool]: return [ generate_tool(yf.get_current_stock_price), generate_tool(yf.get_stock_price_by_date), generate_tool(yf.get_stock_price_date_range), generate_tool(yf.get_historical_stock_prices), generate_tool(yf.get_dividends), generate_tool(yf.get_income_statement), generate_tool(yf.get_cashflow), generate_tool(yf.get_earning_dates), generate_tool(yf.get_news), generate_tool(yf.get_recommendations), generate_tool(yf.get_option_expiration_dates), generate_tool(yf.get_option_chain), ] - src/mcp_yahoo_finance/server.py:240-242 (handler)The MCP server.call_tool dispatcher that invokes the get_current_stock_price handler.
case "get_current_stock_price": price = yf.get_current_stock_price(**args) return [TextContent(type="text", text=price)] - src/mcp_yahoo_finance/utils.py:31-65 (schema)Helper function that generates the JSON schema for tools like get_current_stock_price by inspecting function signature and docstring.
def generate_tool(func: Any) -> Tool: """Generates a tool schema from a Python function.""" signature = inspect.signature(func) docstring = inspect.getdoc(func) or "" param_descriptions = parse_docstring(docstring) schema = { "name": func.__name__, "description": docstring.split("Args:")[0].strip(), "inputSchema": { "type": "object", "properties": {}, }, } for param_name, param in signature.parameters.items(): param_type = ( "number" if param.annotation is float else "string" if param.annotation is str else "string" ) schema["inputSchema"]["properties"][param_name] = { "type": param_type, "description": param_descriptions.get(param_name, ""), } if "required" not in schema["inputSchema"]: schema["inputSchema"]["required"] = [param_name] else: if "=" not in str(param): schema["inputSchema"]["required"].append(param_name) return Tool(**schema)