OmniSweep

OmniSweep is a gas abstraction protocol that solves the “$0 ETH trap.” It enables users to sweep small dust balances even when they have zero native gas. Users simply sign an intent via Coinbase Smart Wallet; our relayer pays gas upfront, executes a swap using 1inch routing, and the smart contract deducts gas cost from the output itself. The protocol refunds the relayer automatically, making the system completely self-sustaining without subsidies.

The net output is bridged cross-chain via LayerZero and delivered back to the user. OmniSweep introduces a “Gas Advance” economic model where dust pays for its own gas, enabling frictionless asset recovery and unlocking billions in stranded value. The frontend is built as a World Mini App with MiniKit SDK and World ID verification, making it universally accessible to 23M+ verified users. All components—contracts, API, and mini-app—are deployed live on testnet and fully functional.

OmniSweep is built as a full gas abstraction pipeline across three layers: intent → execution → settlement. The frontend is a World Mini App built with Next.js, wagmi, and the MiniKit SDK, integrating World ID for human verification and wallet connectivity. Users sign a gasless intent using Coinbase Smart Wallet.

Our backend is a Node.js relayer deployed on Railway that verifies signatures, sources optimal swap routes through the 1inch Fusion API, and submits transactions on Base Sepolia using a funded relayer wallet. The smart contracts—written in Solidity and deployed on Base and Ethereum Sepolia—perform 1inch swaps, calculate gas costs on-chain, deduct gas from output, refund the relayer, and trigger LayerZero V2 cross-chain messaging to send receipts and net output.

We built a cross-chain OApp architecture, implemented profitability checks, automatic gas reimbursement, and a self-sustaining “Gas Advance” mechanism. The entire stack (contracts, API, mini app) is deployed live on testnet, with 7/7 backend tests passing.