NFT Auction Sniper

WHAT IT DOES

NFT Auction Sniper watches the current page for NFT auction end times and current bid prices, then automatically submits a bid in the final seconds of the auction at a user-configured maximum bid amount, with adjustable snipe timing relative to auction end. The tool helps you win auctions by placing last-second bids that leave competitors no time to respond.

WHERE IT RUNS

This tool works on any webpage that displays NFT auction listings with countdown timers and bid functionality, including NFT marketplaces, auction platforms, and collection pages. It automatically detects auction end times and current bid prices from page content. The script runs on all websites as designated in its match patterns.

HOW TO USE

After installing the BotGentz extension, navigate to any NFT auction page. Click the NFT Auction Sniper icon in your browser toolbar or use the keyboard shortcut (Alt+A). The panel will open. Click "Connect Wallet" to connect your real EVM wallet extension—this enables transaction signing, balance checking, and gas price detection. Configure your snipe time offset (seconds before auction end), maximum bid amount in ETH, and gas price limit. Toggle test mode to simulate snipes without placing actual bids. Click "Refresh Auction Data" to detect the auction countdown and current bid price. Click "Arm Sniper" to activate the automated snipe. The tool will wait until the configured offset before the auction ends, then automatically submit your bid. Monitor the countdown and status in the panel. Click "Disarm Sniper" to cancel the pending snipe. Use "Place Manual Snipe Bid" to submit a bid immediately.

TECHNICAL SECTION — COUNTDOWN DETECTION AND TIMED BID EXECUTION

Unlike manual bidding tools or simple auction watchers, this tool uses a countdown detection and timed bid execution engine. It first scans the page DOM to detect auction end times using multiple strategies—identifying countdown timers in page text, parsing time-remaining labels, and extracting structured time data from DOM elements that commonly display auction end times. The engine converts detected countdowns into exact milliseconds remaining. When the user arms the sniper, the engine calculates the precise execution time based on the current countdown minus the configured offset. It then sets a JavaScript timer to trigger the bid submission at that exact moment. At execution time, the engine verifies wallet balance and gas conditions one final time, then submits the bid via eth_sendTransaction with the user's configured parameters. This approach enables precise timing without continuous polling or page refresh cycles, maximizing the chance of your bid being the last one submitted before the auction closes.

THE PANEL

The panel is draggable anywhere on the screen and remembers its position per site. It can snap to the left, right, top, or bottom edges, or float freely. Collapse it to a small status indicator when you need more page visibility, and expand it again with a single click. Resize it vertically or horizontally to show more details. Press Escape to close the panel instantly. All settings (snipe offset, max bid, gas limit, test mode, sound alerts) are saved globally and persist across sessions.

PLEASE NOTE

This tool requires the free BotGentz extension and a real EVM wallet extension already installed in your browser. EVM chains only—supports Ethereum Mainnet, Polygon, Arbitrum, and Optimism. This tool signs and sends bid transactions via your wallet. Always review your settings carefully before arming the sniper. Cannot detect auction end times that are not visible in page DOM, cannot guarantee transaction inclusion if network congestion delays submission, cannot snipe auctions that require manual interaction beyond the bid button, and cannot detect last-second reserve price changes. You may still lose auctions if the transaction is not mined before the auction ends or if other snipers submit higher bids. Test mode is available to verify settings without spending funds. Websites change their layouts frequently; scripts may need updates, and we work to keep them current but cannot guarantee uninterrupted operation.