eth_getTransactionCount - Robinhood

Example code for the eth_getTransactionCount JSON-RPC method. Complete guide to using the eth_getTransactionCount JSON-RPC method in GetBlock.io Web3 documentation.

Returns the number of transactions sent from an address (the nonce). Required for constructing new transactions — each new transaction must use the next sequential nonce. Note: Robinhood Chain's 100ms block time means nonces can advance very quickly on active accounts.

Parameters

Parameter	Type	Required	Description
address	DATA (20 bytes)	Yes	Address to check
block	QUANTITY	TAG	Yes

Request Example

cURL

curl --location --request POST 'https://shared.us-east-1.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_getTransactionCount",
    "params": [
        "0x7a25d0f0Ff6a25f36De0a19C3d5f6dC2C6EAeD6a",
        "pending"
    ],
    "id": "getblock.io"
}'

JavaScript (Axios)

import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_getTransactionCount",
    "params": [
        "0x7a25d0f0Ff6a25f36De0a19C3d5f6dC2C6EAeD6a",
        "pending"
    ],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://shared.us-east-1.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data, null, 2)))
    .catch(error => console.log(error));

Python (Requests)

import requests
import json

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

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "eth_getTransactionCount",
    "params": [
        "0x7a25d0f0Ff6a25f36De0a19C3d5f6dC2C6EAeD6a",
        "pending"
    ],
    "id": "getblock.io"
})

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

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

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 payload = json!({
        "jsonrpc": "2.0",
        "method": "eth_getTransactionCount",
        "params": [
                "0x7a25d0f0Ff6a25f36De0a19C3d5f6dC2C6EAeD6a",
                "pending"
        ],
        "id": "getblock.io"
});

    let response = client
        .post("https://shared.us-east-1.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);

    Ok(())
}

Response Example

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "0x42"
}

Response Parameters

Field	Type	Description
result	QUANTITY	Transaction count / next nonce in hex

Use Cases

• Constructing transactions with the correct nonce

• Detecting account activity (counting transactions)

• Replacing pending transactions (use same nonce with higher gas price)

Error Handling

Status Code	Error Message	Cause
403	Forbidden	Missing or invalid <ACCESS-TOKEN>
-32602	Invalid params	Request parameters are missing or malformed
-32603	Internal error	Server-side error while processing the request
429	Too Many Requests	Rate limit exceeded for your plan

SDK Integration

ethers.js

import { ethers } from 'ethers';

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

// Generic JSON-RPC call (works for any method):
const result = await provider.send('eth_getTransactionCount', ["0x7a25d0f0Ff6a25f36De0a19C3d5f6dC2C6EAeD6a", "pending"]);
console.log(result);

// Many standard methods have typed wrappers on ethers Provider,
// e.g. provider.getBalance(addr), provider.getBlock(n), provider.getTransaction(hash).

viem

import { createPublicClient, http } from 'viem';

const client = createPublicClient({
    transport: http('https://shared.us-east-1.getblock.io/<ACCESS-TOKEN>/')
});

// Generic JSON-RPC request (works for any method):
const result = await client.request({
    method: 'eth_getTransactionCount',
    params: ["0x7a25d0f0Ff6a25f36De0a19C3d5f6dC2C6EAeD6a", "pending"]
});
console.log(result);

// Many standard methods have typed wrappers on PublicClient,
// e.g. client.getBalance({ address }), client.getBlock({ blockNumber }).