DeFi Guradian

We built DeFi Guardian, an automated risk monitoring system for decentralized finance protocols.
 Problem
Today, DeFi users trust protocols with billions of dollars, but most users don’t have real-time insights into protocol health or risk.
When a protocol’s liquidity drops, TVL collapses, or market conditions change, users often find out too late, after funds are already at risk.
So the key problem is:
There is no simple, automated system that monitors DeFi protocol health and publishes it transparently on-chain.
 Solution
DeFi Guardian continuously monitors protocol health metrics and publishes a health score directly on-chain.
Our system automatically evaluates:

• Total Value Locked (TVL)
• Market conditions via Chainlink price feeds
• Protocol activity data from DeFiLlama
  These signals are combined into a health score from 0–100 that represents protocol stability.
   How It Works
  Our architecture has three components:
   Oracle Publisher
  A backend script fetches real-time DeFi data from DeFiLlama and calculates a health score.
   Smart Contract Registry
  We deploy a ProtocolHealthRegistry smart contract on Arbitrum Sepolia that stores health records for protocols.
   Frontend Dashboard
  The Lovable-generated UI reads these scores from the blockchain and displays real-time protocol health.
  So the flow is:
  DeFiLlama Data
  ↓

Oracle Publisher
↓
ProtocolHealthRegistry Smart Contract
↓
Frontend Dashboard

Everything is transparent and verifiable on-chain.

DeFi Guardian is built using a full-stack Web3 architecture:
Smart Contracts

• Solidity smart contract (ProtocolHealthRegistry)
• Deployed on Arbitrum Sepolia
• Stores protocol health scores and historical data
  Backend Oracle Publisher
• Node.js + TypeScript
• Fetches protocol data from DeFiLlama
• Computes protocol health scores
• Publishes results on-chain
  Chainlink Integration
• Chainlink ETH/USD Price Feed
• Used to incorporate real-time market conditions into risk evaluation
  Frontend
• React + Vite
• Lovable-generated UI
• Uses ethers.js to read health data from the smart contract
  Development Tools
• Hardhat for smart contract deployment
• TypeScript backend scripts
• Arbitrum testnet infrastructure