Cross-Chain Gas Refuel Tool

WHAT IT DOES

Cross-Chain Gas Refuel Tool watches the current L2 bridge page for the user's connected wallet address and destination chain, reads the user's native gas token balance on the destination chain via eth_call, calculates the minimum gas required for a transaction on the destination chain based on current gas prices, identifies whether the user has sufficient gas on the destination chain, and displays recommended refuel amounts with estimated costs, gas price analysis, and action recommendations when gas refueling is needed. The tool connects to the user's wallet via window.ethereum, detects the destination chain from the page URL (Arbitrum, Optimism, or Hop), reads the user's native token balance via provider.getBalance, fetches current gas prices via eth_gasPrice, estimates the minimum gas required for a standard transaction, calculates recommended refuel amounts based on user preferences, and provides clear recommendations on whether refueling is needed.

WHERE IT RUNS

The tool runs as a panel inside your browser on L2 bridge pages at https://bridge.arbitrum.io/*, https://app.optimism.io/bridge/*, and https://app.hop.exchange/*. It works on the Arbitrum, Optimism, and Hop Protocol bridge interfaces where users need to ensure they have sufficient gas on the destination chain. 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 the Arbitrum, Optimism, or Hop bridge page, and open the Cross-Chain Gas Refuel Tool panel. Select your refuel amount preference from the dropdown — Minimal, Recommended, or Custom — to control how much gas the tool suggests you refuel. Set your maximum acceptable gas price in Gwei (default 50) — the tool will warn you if current gas prices exceed this limit. If using Custom, enter your desired refuel amount in the custom amount field. Toggle "Auto-check on page load" if you want the tool to analyze automatically when you open the panel. Click "Check Gas" — the tool detects the destination chain, reads your native token balance, fetches current gas prices, calculates minimum and recommended gas requirements, compares your balance against the refuel amount, and displays a complete analysis with recommendations. Review the output and use the recommended parameters for manual execution through the bridge interface.

MECHANISM — DESTINATION CHAIN GAS BALANCE ANALYSIS WITH PRICE COMPARISON

This tool uses a destination chain gas balance analysis engine that evaluates whether users have sufficient gas on their target L2. The system first connects to window.ethereum and requests the user's wallet address. It detects the destination chain from the page URL to determine the appropriate native gas token (ETH for both Arbitrum and Optimism). Using the ethers library loaded at runtime, the tool creates a Web3Provider connected to window.ethereum and reads the user's native token balance via provider.getBalance(address). It fetches current gas prices via provider.getGasPrice() and converts them to Gwei for comparison against the user's configured limit. The minimum gas required for a transaction is estimated at 0.001 ETH, with a recommended gas amount of 0.005 ETH and a safety buffer of 0.002 ETH. The tool calculates the recommended refuel amount based on the user's preference: Minimal (minimum + buffer), Recommended (recommended + buffer), or Custom (user-specified). It then determines if the current balance is sufficient and provides recommendations based on the comparison, including the deficit amount if refueling is needed.

THE PANEL

The BotGentz panel is fully draggable, allowing you to position it anywhere on your screen without obstructing the bridge interface. It includes per-site position memory, so the panel returns to your preferred location each time you visit the bridge page. 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 bridging 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 bridging to Arbitrum, Optimism, and Hop Protocol. This is an analysis and planning tool only — it does not execute refuel transactions automatically. The tool cannot guarantee that gas prices remain stable at execution time due to network fluctuations. It cannot read destination chain balance if the network is not accessible via window.ethereum. It cannot account for gas price spikes or network congestion that may increase required refuel amounts. It cannot verify bridge availability or finalization times for gas refueling. It cannot read private wallet information or transaction intentions. It cannot predict future gas price movements or optimal refuel timing. 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 gas requirements and refuel amounts independently before executing any transactions.