eth_getTransactionCount - SEI

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

Returns the number of transactions sent from an address on the Sei network. This is also known as the account nonce.

Parameters

Parameter	Type	Description
address	string	The address to get the transaction count for
block	string	Block number in hex, or 'latest', 'earliest', 'pending', 'safe', 'finalized'

Request

cURL

cURL

curl --location 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data '{
    "jsonrpc": "2.0",
    "method": "eth_getTransactionCount",
    "params": ["0x742d35Cc6634C0532925a3b844Bc9e7595f5bE21", "latest"],
    "id": "getblock.io"
}'

Axios

JavaScript (axios)

import axios from 'axios';

const url = 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/';

const payload = {
    jsonrpc: '2.0',
    method: 'eth_getTransactionCount',
    params: ["0x742d35Cc6634C0532925a3b844Bc9e7595f5bE21", "latest"],
    id: 'getblock.io'
};

axios.post(url, payload, {
    headers: { 'Content-Type': 'application/json' }
})
.then(response => console.log(response.data))
.catch(error => console.error(error));

Python

Python (requests)

import requests
import json

url = "https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "eth_getTransactionCount",
    "params": ["0x742d35Cc6634C0532925a3b844Bc9e7595f5bE21", "latest"],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.json())

Rust

Rust (reqwest)

use reqwest::Client;
use serde_json::json;

#[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": ["0x742d35Cc6634C0532925a3b844Bc9e7595f5bE21", "latest"],
            "id": "getblock.io"
        }))
        .send()
        .await?;
    
    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);
    
    Ok(())
}

Response

Response (JSON)

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "0x15"
}

Response Parameters

Field	Type	Description
result	string	The number of transactions sent from the address as a hex string

Use Case

The eth_getTransactionCount method is essential for:

• Blockchain developers building applications on Sei

• Wallet applications requiring network data

• Analytics platforms tracking Sei network activity

• DeFi protocols integrating with Sei's parallelized EVM

Error Handling

Error Code	Message	Description
-32700	Parse error	Invalid JSON
-32600	Invalid Request	JSON is not a valid request object
-32601	Method not found	Method does not exist
-32602	Invalid params	Invalid method parameters
-32603	Internal error	Internal JSON-RPC error
-32000	Invalid input	Generic input error
-32500	Cross-VM error	Error in cross-VM operation (Sei-specific)

Web3 Integration

First Tab

Ethers.js

import { ethers } from 'ethers';

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

// Using ethers provider methods
const result = await provider.send('eth_getTransactionCount', ["0x742d35Cc6634C0532925a3b844Bc9e7595f5bE21", "latest"]);
console.log(result);

Viem

Viem

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

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

// Using viem's request method
const result = await client.request({
    method: 'eth_getTransactionCount',
    params: ["0x742d35Cc6634C0532925a3b844Bc9e7595f5bE21", "latest"]
});
console.log(result);