eth_getTransactionCount - Sonic

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

This method returns the number of transactions sent from an address, which is the account nonce. It is used to set the nonce for the next transaction.

Parameters

Parameter	Type	Required	Description
address	string	Yes	20-byte address to read the nonce of
blockParameter	string	Yes	Block number in hex, or "latest", "earliest", "pending"

Request

cURL

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

Axios

example.js

const axios = require('axios');

const response = await axios.post('https://go.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

example.py

import requests

response = requests.post(
    'https://go.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

example.rs

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://go.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": "0x2a"
}

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)

Use Cases

• Nonce Management: Set the nonce for the next outgoing transaction

• Transaction Ordering: Sequence a batch of transactions from one account

• Stuck Transactions: Detect a gap between latest and pending nonces

• Account Activity: Gauge how many transactions an account has sent

Error Handling

Error Code	Message	Description
-32602	Invalid params	The address is not a valid 20-byte hex string, or the block tag is invalid
-32603	Internal error	The node failed to read the requested state

Web3 Integration

Ethers.js

ethers-example.js

const { ethers } = require('ethers');

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

const nonce = await provider.getTransactionCount('0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045');
console.log(nonce);

Viem

viem-example.js

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

const client = createPublicClient({ chain: sonic, transport: http('https://go.getblock.io/<ACCESS-TOKEN>/') });

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