Monadeal — Web Platform

Monadeal is a peer-to-peer NFT trading platform built on the Monad blockchain. It lets users buy, sell, and swap NFTs directly with each other no middleman, no marketplace fees eating into profits. The core of the platform is a smart contract escrow system. When two users agree on a deal, their assets are locked in a dedicated escrow contract. The trade only executes when both sides have deposited — making every transaction atomic and safe. If anything goes wrong, both parties get their assets back automatically. We built three deal types into the platform. Buy deals let users make offers on specific NFTs with MON tokens. Sell deals let NFT owners list their items at a set price. Swap deals enable direct NFT-for-NFT trades with no currency involved. Every deal type supports counter-offers, so users can negotiate prices in real time through the built-in chat system. The real-time experience was a key focus. Using WebSocket connections, users see deal status updates, new messages, and deposit confirmations the moment they happen. There's no refreshing or waiting — the interface stays in sync with the blockchain. On the technical side, we developed custom Solidity smart contracts including a factory pattern that deploys individual escrow contracts per deal. The platform includes a 2.5% configurable fee, automatic 7-day deal expiry, and emergency pause functionality for security. The backend handles NFT metadata caching, transaction tracking, and notification delivery, while the frontend provides wallet integration through RainbowKit for a smooth Web3 onboarding experience.