eth_getTransactionCount - Ethereum

Example code for the eth_getTransactionCount JSON RPC method. Сomplete guide on how to use eth_getTransactionCount JSON RPC in GetBlock Web3 documentation.

This method returns the number of transactions sent from an address, hex-encoded. This is the address's nonce — the counter used to order transactions from the same sender. Wallets read this before signing to set the correct nonce; nonce-management bugs are a common source of stuck or replaced transactions.

Parameters

Parameter	Type	Required	Description
address	string	Yes	20-byte address to query (hex-encoded with 0x prefix)
blockParameter	string	Yes	Block number in hex, or latest, earliest, pending, finalized, safe

Request

cURL

curl --location --request POST 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_getTransactionCount",
    "params": [
        "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
        "latest"
    ],
    "id": "getblock.io"
}'

Axios

const axios = require('axios');

const response = await axios.post('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/', {
    jsonrpc: '2.0',
    method: 'eth_getTransactionCount',
    params: [
        "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
        "latest"
    ],
    id: 'getblock.io'
}, {
    headers: { 'Content-Type': 'application/json' }
});

console.log(response.data.result);

Request

import requests

response = requests.post(
    'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/',
    headers={'Content-Type': 'application/json'},
    json={
        'jsonrpc': '2.0',
        'method': 'eth_getTransactionCount',
        'params': [
        "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
        "latest"
    ],
        'id': 'getblock.io'
    }
)

print(response.json())

Rust

use reqwest::Client;
use serde_json::{json, Value};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();
    
    let response = client
        .post("https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&json!({
            "jsonrpc": "2.0",
            "method": "eth_getTransactionCount",
            "params": [
        "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
        "latest"
    ],
            "id": "getblock.io"
        }))
        .send()
        .await?
        .json::<Value>()
        .await?;
    
    println!("Result: {}", response["result"]);
    Ok(())
}

Response

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "0x462"
}

Response Parameters

Parameter	Type	Description
jsonrpc	string	JSON-RPC protocol version ("2.0")
id	string	Request identifier matching the request
result	string	Hex-encoded transaction count (nonce) for the address at the requested block

Use Cases

• Nonce Management: Set the nonce field when signing a transaction — typically use pending to include queued but unmined transactions

• Account Activity Snapshots: Show total sent-transaction count for an address in an explorer or wallet UI

• Stuck-Transaction Recovery: Diagnose whether a transaction is truly stuck by comparing on-chain nonce to expected nonce

• Batch Transaction Sequencing: Reliably enqueue N transactions with sequential nonces from a hot wallet

Error Handling

Error Code	Message	Description
-32602	Invalid params	Address is malformed, or block parameter is invalid
-32603	Internal error	Node failed to look up account state at the requested block

Web3 Integration

Ethers.js

import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/');

const nonce = await provider.getTransactionCount('0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045', 'latest');
console.log('Nonce:', nonce);

// Use 'pending' when queueing a new transaction to account for unmined queued txs:
const pendingNonce = await provider.getTransactionCount('0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045', 'pending');
console.log('Next nonce to use:', pendingNonce);

Viem

import { createPublicClient, http } from 'viem';
import { mainnet } from 'viem/chains';

const client = createPublicClient({
    chain: mainnet,
    transport: http('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/'),
});

const nonce = await client.getTransactionCount({ address: '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045' });
console.log('Nonce:', nonce);

const pendingNonce = await client.getTransactionCount({
    address: '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045',
    blockTag: 'pending',
});
console.log('Next nonce to use:', pendingNonce);