Abnormal Transaction Size Alert

WHAT IT DOES

Abnormal Transaction Size Alert is your transaction safety tool that flags unusual transaction sizes before you confirm. It automatically detects pending transaction amounts from DEX swap pages, NFT marketplace purchase pages, and token transfer pages, then calculates transaction size relative to your wallet balance, typical transaction history, and market norms. The tool displays an alert when transaction size deviates significantly (high or low) from expected patterns, shows transaction size comparison with percentage of wallet balance, flags unusually large or small transactions, supports configurable size thresholds, provides visual indicators (Normal, Large, Unusual, Suspicious), shows transaction history context, and sends alerts for abnormal transaction sizes.

WHERE IT RUNS

This script runs on all major DEX interfaces including Uniswap (app.uniswap.org), SushiSwap (app.sushi.com), Curve (curve.fi), Balancer (balancer.fi), 1inch (1inch.io), CowSwap (cow.fi), major NFT marketplaces including OpenSea (opensea.io), Blur (blur.io), LooksRare (looksrare.org), Zora (zora.co), Rarible (rarible.com), Foundation (foundation.app), and Etherscan (etherscan.io). It works on swap pages, NFT purchase pages, token transfer pages, and any page displaying transaction amounts.

HOW TO USE

Install the script through the BotGentz userscript manager. Click "Connect Wallet" to link your EVM wallet extension. Navigate to any supported page and enter a transaction amount. The tool automatically detects the amount and analyzes it against your wallet balance and historical transaction sizes. The panel displays the transaction size status—Normal (green), Large (yellow), Unusual (red), or Suspicious (purple)—along with the amount, percentage of wallet balance, historical average, and a visual comparison bar. If a transaction is flagged as unusual or suspicious, you receive a browser notification. Configure deviation thresholds (default 3×) and balance percentage alerts (default 25%) in settings to match your risk tolerance.

MULTI-FACTOR TRANSACTION SIZE ANALYSIS ENGINE WITH BALANCE AND HISTORY COMPARISON

Unlike simple amount checkers that only look at the raw number, this tool implements a multi-factor analysis engine that evaluates transaction size against three independent dimensions. The engine first detects the transaction amount from the page using adaptive DOM parsing, then fetches the user's wallet balance via eth_getBalance. The balance percentage metric calculates what portion of the wallet the transaction represents (amount ÷ balance × 100), with configurable alert thresholds for large balance usage. The historical comparison dimension maintains a rolling transaction history (default 20 samples), calculating a moving average of typical transaction sizes and comparing the current transaction's deviation ratio. The combined analysis produces a four-tier classification: Normal (within 2× of historical average and under balance threshold), Large (exceeds historical average but under balance threshold), Unusual (exceeds balance threshold but not suspicious), and Suspicious (exceeds both thresholds significantly). Each classification is visually distinguished with color-coded status indicators, and notifications are triggered for all non-normal classifications.

THE PANEL

The floating panel is fully draggable and snap-to-edge enabled. You can collapse it to a compact bubble when not in use, resize it to your preferred dimensions, and it remembers its position across page loads using persistent storage. Press Escape to quickly dismiss the panel. The panel displays transaction size status, amount, token, wallet balance, percentage of balance, historical average, deviation ratio, visual comparison bar, and recent transaction size history.

PLEASE NOTE

This script requires the free BotGentz extension to be installed in your browser—it does not run as a standalone extension. You also need a real EVM wallet extension already installed and configured for balance queries. The tool cannot access transaction history beyond what is observed while the page is open and relies on the page exposing transaction amount in a detectable format. Transaction size norms vary by user and trading activity. No user data is collected or transmitted—all transaction history stays local in your browser storage. The tool provides size awareness assistance but does not guarantee detection of all abnormal transaction sizes.