Staker Profitability Monitor

A service that monitors staking deposits and executes profitable earning power bump transactions.

Setup

1. Install dependencies:

npm install

2. Configure environment variables: Copy .env.example to .env and fill in the required values:

• RPC_URL: Your Ethereum RPC URL (e.g. from Alchemy or Infura)
• STAKER_CONTRACT_ADDRESS: The address of the Staker contract
• PRIVATE_KEY: Your wallet's private key (without 0x prefix)

Running the Service

1. Build the TypeScript code:

npm run build

2. Start the service:

npm start

The service will:

• Monitor deposits in the database
• Analyze profitability of earning power bumps
• Execute profitable transactions automatically
• Log all activities to the console

To stop the service gracefully, press Ctrl+C.

Configuration

The service can be configured through the following parameters in main.ts:

• Poll interval: How often to check for profitable opportunities (default: 15s)
• Minimum profit margin: Minimum expected profit to execute a transaction (default: 0.001 ETH)
• Gas price buffer: Additional buffer on gas price estimates (default: 20%)
• Wallet minimum balance: Minimum wallet balance to maintain (default: 0.1 ETH)
• Maximum pending transactions: Maximum number of pending transactions (default: 5)
• Gas boost percentage: Percentage to boost gas price by (default: 10%)
• Concurrent transactions: Number of transactions to execute concurrently (default: 3)

Database

The service uses a JSON file database by default (staker-monitor-db.json). This can be changed to use Supabase by modifying the database configuration in main.ts.