eth_getTransactionCount

Returns the number of transactions sent from an address (nonce) on Optimism Layer 2.

Parameters

1. Address - DATA, 20 bytes

   • The address to get transaction count for

2. Block Parameter - QUANTITY|TAG

   • "latest" - Most recent block
   • "pending" - Including pending transactions
   • Block number in hex format

Implementation Examples

cURL

curl -X POST https://api-optimism-mainnet-archive.n.dwellir.com/YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_getTransactionCount",
    "params": [
      "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb",
      "latest"
    ],
    "id": 1
  }'

JavaScript

const response = await fetch('https://api-optimism-mainnet-archive.n.dwellir.com/YOUR_API_KEY', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    method: 'eth_getTransactionCount',
    params: [
      "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb",
      "latest"
    ],
    id: 1
  })
});

const data = await response.json();
console.log('Nonce:', parseInt(data.result, 16));

Response Example

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x1a"
}

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