Cross-Marketplace Sync Delist Tool

WHAT IT DOES Cross-Marketplace Sync Delist Tool watches the current marketplace page for the user's active NFT listings, reads the user's listing data (token IDs, prices, expiration) from the marketplace contract via eth_call, identifies listings that are active across multiple marketplaces, checks for duplicate or conflicting listings, calculates the gas cost for delisting from each marketplace, and displays alerts with listing details, duplicate status, gas costs, and execution recommendations when sync delist opportunities are detected. The tool scans the page for NFT listings, reads the user's wallet address, checks active listings across marketplaces, identifies duplicate listings, calculates gas costs for delisting, and provides recommendations. WHERE IT RUNS The tool runs as a panel inside your browser on OpenSea marketplace pages at https://opensea.io/*. It works on any OpenSea page displaying NFT listings. The tool connects to your real EVM wallet extension (MetaMask, WalletConnect, or any wallet injecting window.ethereum) to read on-chain data via eth_call and the ethers library loaded at runtime. No data is sent to any external server; all reads happen directly from the blockchain through your wallet provider. HOW TO USE Install the BotGentz extension, navigate to OpenSea with your wallet connected, and open the Cross-Marketplace Sync Delist Tool panel. Set your duplicate listing threshold (default 1) — the tool will flag listings that appear in more than this many marketplaces. Set your minimum gas savings threshold in USD (default $5) — the tool will only recommend delisting when gas savings exceed this amount. Set your maximum acceptable gas price in Gwei (default 50). Choose your alert preference — Panel only, Browser notification, or Both. Toggle "Auto-check on page load" if you want the tool to analyze automatically when you open the panel. Click "Scan Listings" — the tool scans the page for NFT listings, reads your wallet address, checks active listings across marketplaces, identifies duplicate listings, calculates gas costs for delisting, and displays a comprehensive analysis with recommendations. When sync delist opportunities are detected, the tool triggers alerts with listing details and gas savings. Click "Refresh" to manually update the delist analysis. MECHANISM — CROSS-MARKETPLACE LISTING SYNC WITH DUPLICATE DETECTION AND GAS COST ANALYSIS This tool uses a cross-marketplace listing sync engine that identifies duplicate listings and calculates delisting costs. The system first connects to window.ethereum and requests the user's wallet address. It scans the page for NFT listings using DOM selectors for item cards and listing details. For each NFT, the tool reads the user's active listings from the marketplace contract via eth_call, identifying which marketplaces have active listings for the same NFT. It calculates the number of active listings and checks if the count exceeds the duplicate threshold. The tool reads current gas prices via eth_gasPrice and calculates the gas cost for delisting each listing. The urgency classification uses a multi-tier system: DELIST (duplicate listings exist and gasSavings ≥ threshold), DUPLICATE (duplicate listings exist but gasSavings < threshold), or SINGLE (only one active listing). Recommendations are generated based on the duplicate status and gas costs, helping users sync their listings across marketplaces. THE PANEL The BotGentz panel is fully draggable, allowing you to position it anywhere on your screen without obstructing the OpenSea interface. It includes per-site position memory, so the panel returns to your preferred location each time you visit the marketplace. Snap-to-edge functionality lets you dock the panel to any side of the browser window. The panel collapses to a compact icon when not in use and expands with a single click. You can resize it to your preferred dimensions, and pressing the Escape key instantly closes the panel. All interactions are smooth and intuitive, designed to work alongside your NFT management workflow. PLEASE NOTE This tool requires the free BotGentz extension and a real EVM wallet extension (such as MetaMask) already installed in your browser. EVM chains only — currently supports Ethereum mainnet. This is a monitoring and analysis tool only — it does not execute delist transactions automatically. The tool cannot guarantee that the displayed listing data matches the exact moment of execution due to on-chain latency. It cannot account for gas price changes during execution. It cannot read listing data from marketplaces not supported by the tool. It cannot verify listing validity or authenticity. It cannot predict future listing activity or market changes. It cannot read private wallet information or delisting intentions. All blockchain reads are performed directly through your wallet provider; no data is stored or transmitted beyond your browser. Websites change their layouts and content structures regularly; while we continuously update the extraction logic, some pages may require script updates. Always verify all listing details, duplicate status, and gas costs independently before taking any action based on the dashboard.