trading-mcp

from __future__ import annotations from datetime import date, datetime from typing import Protocol, runtime_checkable import pandas as pd DateLike = date | datetime | str class MarketDataError(RuntimeError): """Raised when market data operations fail.""" @runtime_checkable class MarketDataClient(Protocol): """Interface for market data clients.""" def fetch( self, symbol: str, start: DateLike | None = None, end: DateLike | None = None ) -> pd.DataFrame: """Return time-ordered data for a symbol and date range.""" raise NotImplementedError