Scroll Bridge Deposit Helper

WHAT IT DOES

Scroll Bridge Deposit Helper is your comprehensive deposit assistant for the Scroll network. It automatically detects deposit interfaces on Scroll bridge pages, reading deposit amounts, token types, destination addresses, and gas costs from both Ethereum mainnet (L1) and Scroll (L2). The tool fetches real-time gas prices from both chains, calculates the total cost including L1 gas, L2 gas, and bridging fees, and displays everything in a clear summary panel. With one click, you can execute your deposit, with the script handling transaction submission, confirmation monitoring across both layers, and status tracking from initiation to final settlement on Scroll.

WHERE IT RUNS

This script runs on all official Scroll interfaces, including scroll.io, scroll.xyz, bridge.scroll.io, and scroll.dev domains. It works on bridge deposit pages, token transfer interfaces, and any transaction submission form that deposits assets from Ethereum mainnet to Scroll L2. The tool automatically detects the deposit interface regardless of how it's structured and adapts its cost calculations to the specific contract interactions present on the page.

HOW TO USE

Install the script through the BotGentz userscript manager. Navigate to any Scroll bridge or deposit page. Click "Connect Wallet" to link your EVM wallet extension—the tool supports MetaMask, Coinbase Wallet, and any Web3-compatible wallet. The panel will automatically detect the deposit interface and display all relevant information: deposit amount, token type, destination address, L1 gas price, estimated L2 gas cost, bridge fee percentage, and total cost in ETH. Adjust your deposit amount on the page, and the panel updates in real-time. When ready, click "Execute Deposit" to initiate the transaction. The script handles transaction signing, submission, and confirmation monitoring, alerting you when the deposit completes on both chains.

DUAL-LAYER GAS AGGREGATION WITH SCROLL'S UNIQUE FEE STRUCTURE

Unlike simple bridge calculators that only estimate L1 gas, this tool performs live RPC queries through window.ethereum to fetch current gas prices on Ethereum mainnet, then applies a sophisticated cost model that accounts for Scroll's unique fee structure. The engine uses separate gas estimates for L1 (180,000 gas for deposit contract interactions) and L2 (550,000 gas for settlement and finalization), then applies the current L1 gas price to both. It factors in the bridge fee (typically 0.1-0.4% of deposit amount) and uses the actual current gas price rather than static estimates. When ethers.js is available, the engine further refines estimates using contract ABI inspection and on-chain fee data, providing the most accurate deposit cost picture available for Scroll bridging. The tool also accounts for Scroll's L1 settlement costs, which add unique variables to the total cost calculation.

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 automatically updates every 30 seconds with fresh gas data and deposit status, ensuring you always have current information before committing to a transaction.

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. The tool works exclusively with Scroll bridge interfaces and compatible deposit pages. Deposit interfaces may change over time, which could temporarily break detection; the script will notify you if it cannot find the deposit components. Token approval transactions for ERC-20 bridging add additional cost and complexity. No user data is collected, stored, or transmitted—all wallet interactions stay local in your browser. Deposit success depends on network conditions, gas availability, and bridge contract state; the tool provides cost estimates and execution assistance but cannot guarantee deposit completion if network congestion or contract issues occur.