Synapse Yield

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 like deposit, execute, and redeem on whitelisted DeFi protocols (e.g., PancakeSwap Router, Kintsu, Magma).

• The keeper agent (keeper.ts), triggered via FastCron, runs persistently and:

  • Queries users with automationEnabled: true from 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 /activity feed.

• 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

• Indexer: https://github.com/akm2006/synapse-indexer

Live Deployment

• https://synapse-yield.vercel.app/