n8n Ethereum Node

A comprehensive n8n node for interacting with the Ethereum blockchain, including wallet creation, sending ETH/ERC20 tokens, and balance checking.

Features

Wallet Operations

• Create Wallet: Generate new Ethereum wallets with private keys and mnemonics (no credentials required)
• Get Balance: Check ETH balance of any wallet address (credentials required if no address provided)

Transaction Operations

• Send ETH: Transfer ETH between addresses using wallet credentials (credentials required)
• Get Transaction: Retrieve transaction details by hash (no credentials required)

Token Operations

• Send Token: Transfer ERC20 tokens between addresses using wallet credentials (credentials required)
• Get Token Balance: Check ERC20 token balances (credentials required if no address provided)

Credentials

The node uses the EthereumWallet credential for operations that require private keys:

Operations requiring credentials:

• Send ETH
• Send ERC20 tokens
• Get Balance (when no specific address is provided)
• Get Token Balance (when no specific address is provided)

Operations NOT requiring credentials:

• Create Wallet
• Get Transaction Details

Configuration

RPC Configuration

Each operation can optionally specify a custom RPC URL. If not provided, the default endpoint https://ethereum-rpc.publicnode.com will be used.

Chain ID

All operations use Ethereum mainnet (Chain ID = 1).

Common Token Addresses

• USDT: 0xdAC17F958D2ee523a2206206994597C13D831ec7 (6 decimals)
• WETH: 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 (18 decimals)

Error Handling

The node includes comprehensive error handling for:

• Invalid addresses
• Insufficient funds
• Network connectivity issues
• Invalid transaction hashes
• Token contract errors

Development

npm install
npm run build

Changelog

• v1.0.0: Initial release with wallet, transaction, and token operations
• Added support for multiple wallet creation
• Added decimal support for token transfers
• Added optional RPC URL configuration per operation
• Added credential-based security for private key operations