Relayer Service
The bridge between Ethereum and Sui.
What It Does
The relayer is like a translator between blockchains:
Watches for new swaps on both chains
Helps coordinate the swap process
Makes sure both sides complete
Earns fees for providing this service
How It Works
Ethereum event → Relayer sees it → Creates Sui transaction → Swap completesStep by step:
User creates swap on Ethereum
Relayer detects the event
Relayer creates matching swap on Sui
Relayer manages the secret coordination
Both users get their tokens
Running a Relayer
Why run one:
Earn fees from helping swaps
Support the Mesh network
Learn cross-chain technology
What you need:
Server running 24/7
Tokens for gas fees
Technical setup knowledge
Costs vs rewards:
Pay gas fees on both chains
Earn from price differences
Volume determines profit
Setup Guide
1. Install and configure
cd relayer
npm install
cp env.example .env
# Edit .env with your settings2. Configure environment
# Ethereum
ETHEREUM_RPC_URL=https://yourethrpcurl
ETHEREUM_PRIVATE_KEY=your_private_key
# Sui
SUI_RPC_URL=https://yoursuirpcurl
SUI_PRIVATE_KEY=your_sui_private_key
# Contract addresses
ETHEREUM_RESOLVER_ADDRESS=0x123...
SUI_PACKAGE_ID=0xabc...3. Start relayer
npm startMonitoring
Check it's working:
Look at console logs
Monitor token balances
Watch for successful swaps
Key metrics:
Swaps completed per hour
Profit per swap
Gas costs vs earnings
Security
Relayers are safe because:
Can't steal user funds
Smart contracts enforce rules
Everything happens on public blockchains
Protect yourself:
Monitor for unusual activity
Set gas price limits
Keep most funds in cold storage
Use secure servers
Troubleshooting
Relayer won't start:
Check environment variables
Verify private keys
Test network connections
No swaps being filled:
Check token balances
Verify contract addresses
Look for other relayers competing
Transactions failing:
Increase gas limits
Check network congestion
Verify contract state
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