Retrieve market data from MetaTrader 5 using pdmt5 library. Use when you need to:
(1) Get available trading symbols and their specifications
(2) Fetch current bid/ask prices and tick data
(3) Retrieve OHLCV (candlestick) historical price data
(4) Get tick-by-tick data for high-frequency analysis
Requires active MT5 connection (use mt5-connection skill first).