MarketApp P2P is a specialized extension for Firefox that enhances the trading experience on the Market.CSGO marketplace. It integrates seamlessly with the Steam API to provide users with essential profile information, facilitating peer-to-peer item sales. Users can create and accept trade offers directly through the extension, making transactions more efficient. However, it's important to note that trade confirmations must be completed through the official Steam app or the Market.CSGO mobile app.

The extension also features a custom Steam Trade Offer Page, which differentiates Market.CSGO offers from others, and allows for manual trade offer management. Additionally, the CS2 game inventory page has been upgraded to display item Float values and trade restrictions. Quick-sell and instant-sell options streamline the selling process, while the new toolbar supports multiple item sales, enhancing user convenience.