Gas Refund Tracker

WHAT IT DOES

Gas Refund Tracker monitors your Ethereum transactions and calculates potential gas refunds. It analyzes EIP-1559 transactions to determine if you overpaid on priority fees, checks for gas refund programs on L2s (Optimism, Arbitrum, and others), and estimates the amount you could reclaim. The tool connects directly to your wallet, reads your transaction history, and displays a clear summary of eligible refunds. It also alerts you when gas prices drop significantly, helping you time your claims for maximum savings. You can manually enter any transaction hash to check its refund eligibility, making it a versatile tool for both casual users and power traders.

WHERE IT RUNS

This tool runs as a userscript inside the BotGentz extension on any website. It connects to your real EVM wallet (MetaMask, Coinbase Wallet, etc.) using window.ethereum—no intermediate bridge. All data is fetched directly from the blockchain via your wallet's provider.

HOW TO USE

Install the script and navigate to any page. Open the panel and click "Connect Wallet" to link your EVM wallet. Once connected, click "Check Gas Refunds" to scan your recent transactions and calculate estimated refunds. The panel will display a list of eligible transactions with refund amounts. You can also manually enter a transaction hash to check a specific transaction. Use the settings to set a refund threshold (minimum amount for alerts), enable or disable notifications, and configure auto-check intervals to monitor for new refund opportunities.

TECHNICAL MECHANISM

The tool reads your transaction receipts directly from the chain using eth_getTransactionReceipt and calculates refunds based on the difference between the effectiveGasPrice and the base fee at the time of the transaction. For EIP-1559 transactions, the refund is the priority fee (tip) portion that was paid. For L2s like Optimism and Arbitrum, the tool checks for protocol-specific rebate structures by analyzing gas usage patterns. It uses ethers.js for ABI encoding and decoding when needed, loaded dynamically at runtime. The tool also monitors gas prices via eth_gasPrice and eth_getBlockByNumber to provide real-time context. All calculations are performed client-side—no data leaves your browser.

THE PANEL

The panel can be dragged anywhere on screen, snapped to the edge, resized, collapsed, and closed with Escape. It remembers its position per site and stays out of your way until you need it.

PLEASE NOTE

This tool requires the free BotGentz extension and a real EVM wallet extension (e.g., MetaMask) installed in your browser. It is EVM-only and works on Ethereum, Optimism, Arbitrum, and other EVM-compatible chains. Refund estimates are simulations based on on-chain data; actual refunds depend on specific protocol rules. Sites and protocols change frequently; the script may need updating. No data is collected or stored beyond your own browser settings.