Interacts with the BitSkins REST API V2 and WebSocket API for CS2/Dota 2 skin trading. Supports account management, market search, buying, selling, listing, delisting, relisting, price updates, Steam inventory/deposits/trades, wallet operations, and real-time WebSocket subscriptions. Use when the user wants to search for skins, check prices, buy or sell items, manage their BitSkins account, check balances, or interact with the BitSkins marketplace.