sentinel

DeFi liquidations are brutal, and managing leveraged positions requires constant 24/7 monitoring. Worse, the current Web3 onboarding experience relies on clunky wallets and seed phrases, creating a massive barrier to entry.

SENTINEL solves both of these problems simultaneously. It is an autonomous, walletless DeFi protector deployed on the Base network.

1. Completely Walletless (ERC-7715 Passkeys): We integrated the 1Shot Passkey infrastructure. Users do not need MetaMask. They authenticate using their device's native biometric scanner (FaceID/TouchID). This securely derives a Smart Contract Account on Base, creating a frictionless Web2-like onboarding experience.

2. Autonomous AI Rescues (Venice AI): Once authenticated, users can delegate specific spending permissions to our AI agent. Using the venice-uncensored model, the backend actively monitors the user's positions against live CoinGecko market data. If extreme volatility causes the Loan-to-Value (LTV) ratio to approach liquidation, Venice AI calculates the risk, formulates a rescue plan, and triggers a gasless relayer transaction to repay the debt before the protocol liquidates the user.

SENTINEL operates entirely in the background, keeping your funds safe while you sleep, without ever requiring you to sign a popup.

We built the entire architecture from scratch during this hackathon:

• Frontend: Developed a stunning, responsive Next.js (Turbopack) dashboard featuring real-time LTV polling and live AI reasoning logs.

• Biometric Auth: Successfully implemented @simplewebauthn to generate and verify hardware Passkeys, resolving complex Uint8Array serialization issues to seamlessly derive Smart Account keys.

• Backend Engine: Built a Node/Express backend backed by MongoDB Atlas. We engineered a custom volatility simulator that cross-references live CoinGecko Ethereum prices to dynamically calculate liquidation risk.

• AI Integration: Integrated the Venice AI API to act as the autonomous decision-maker, evaluating protocol safety, user risk tolerance, and time-to-liquidation to execute precise, JSON-formatted rescue commands.

Bootstrapped / Hackathon Stage. We are currently seeking pre-seed funding or grants to audit the smart contract delegation logic and bring SENTINEL to mainnet production.