Synapse Yield
A non-custodial yield optimizer using Account Abstraction and Delegation. It offers automated, secure asset rebalancing for maximum returns and one-click swap, transfer, and stake via Smart Accounts
ビデオ
説明
Project Name
Synapse Yield
Tagline
Maximize Your DeFi Yield on Monad with an Autonomous Agent & Non-Custodial Automation
Description (Extended Judge-Focused Version)
Synapse Yield is a full-stack consumer dApp built on the Monad Testnet that addresses the core barriers to mainstream DeFi adoption—complexity, gas inefficiency, and security risk.
It delivers a “set-it-and-forget-it” DeFi experience by assigning each user a personal autonomous agent that manages and optimizes yields entirely on-chain.
🔹 Architecture Overview
A tri-layer architecture designed for scalability, transparency, and trust:
1. Consumer Experience Layer (Mass Adoption)
Built with Next.js App Router, TypeScript, Tailwind CSS, and Framer Motion for a sleek, production-grade UI.
Abstracts all Web3 complexity—users authenticate via SIWE (Sign-In With Ethereum) + Iron Session.
Upon login, a MetaMask Smart Account (ERC-4337) is automatically provisioned.
Powered by Permissionless.js and Pimlico Paymaster for gas-sponsored, one-click actions such as:
Staking
Swapping
Fund management
2. Automation Layer – “The AI Agent” (Core Innovation)
Implements a non-custodial keeper system for autonomous portfolio management.
Users grant scoped access by signing a single EIP-712 delegation using the MetaMask Delegation Toolkit.
Delegations are tightly scoped (defined in
src/lib/delegation.ts) to specific methods likedeposit,execute, andredeemon whitelisted DeFi protocols (e.g., PancakeSwap Router, Kintsu, Magma).The keeper agent (
keeper.ts), triggered via FastCron, runs persistently and:Queries users with
automationEnabled: truefrom MongoDB.Performs on-chain multicalls to get Smart Account balances.
Uses a decision function (
determineRebalanceAction) to detect imbalance.Executes delegated swaps automatically to rebalance portfolios.
Current demo performs a 50/50 asset rebalance, while the mainnet version will integrate adaptive yield strategies using protocol APYs and market data.
3. Trust & Transparency Layer (Powered by Envio)
Since automation requires verifiability, Synapse Yield integrates an Envio Indexer as a real-time trust layer.
The Envio Indexer tracks and streams actions from integrated protocols (Kintsu, Magma, etc.).
Data is queried via Apollo Client (GraphQL) to power the
/activityfeed.UI clearly differentiates manual vs. automated keeper actions, ensuring full user visibility.
This creates a transparent bridge between autonomy and accountability, key to user confidence and adoption.
Tech Stack
Core Blockchain: Monad Testnet
AA & Delegation: MetaMask Delegation Toolkit, Permissionless.js, Pimlico (Bundler & Paymaster)
Frontend: Next.js (App Router), React, TypeScript, Tailwind CSS, Framer Motion
Web3 Libraries: Viem, Wagmi, RainbowKit
Backend & Database: Next.js API Routes, MongoDB, Mongoose
Automation (AI Agent): FastCron (triggering Node.js keeper script via API endpoint)
Authentication: SIWE (Sign-In With Ethereum), Iron Session
Data Indexing (Transparency Layer): Envio (real-time activity feed for integrated protocols)
GitHub Repositories
Main App: https://github.com/akm2006/synapse-yield
Live Deployment
ハッカソンの進行状況
Built during: MetaMask Smart Accounts × Monad Dev Cook Off Scope: Entire platform (frontend + backend + automation) developed within the hackathon 🧠 Concept & Architecture Ideated a non-custodial automated yield optimizer for simplified DeFi. Designed full-stack architecture on Monad Testnet using ERC-4337 Smart Accounts and MetaMask Delegation Toolkit. 🔐 Core AA & Security Implemented ERC-4337 Smart Account creation & management with permissionless.js and Pimlico bundler/paymaster. Integrated MetaMask Delegation Toolkit for secure, scoped delegations (no key exposure). Added SIWE + Iron Session for secure user authentication. 💻 Full-Stack Development Built frontend with Next.js (App Router), React, TypeScript, Tailwind CSS. Designed a 3D-animated landing page using Framer Motion. Created all app pages: Dashboard, Onboarding, Fund Management, Staking, Swapping, Yield Optimizer. ⚙️ Backend & Automation Developed Next.js API routes for transactions, sessions, and DB interactions. Wrote keeper script (/src/scripts/keeper.ts) for automated yield rebalancing. Configured automation to run every 5 minutes using FastCron Jobs. Integrated MongoDB for secure data storage. Connected Envio indexer for a real-time activity feed. 🚀 Deployment Deployed full-stack app (frontend, backend, and automation) to Vercel for live demonstration.