Get the nonce of an address

POST

https://vinu.nownodes.io/

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Returns the number of transactions sent from an address - its nonce.

State access is limited to recent blocks - these are full nodes, not archive nodes. In practice only the last dozen or so blocks resolve; deeper block parameters return -32000 missing trie node <hash> (path ). earliest also works, since genesis state is kept. Use latest or pending for anything that must not fail: the pruning boundary moves continuously, so a height taken from eth_blockNumber can already be out of range by the time you query it.

Block, transaction and receipt history is complete back to block 1 - only state is pruned.

Block tags accepted by this node: earliest, latest, pending, or a hex block number. safe and finalized are NOT supported and fail with -32602 invalid argument N: hex string without 0x prefix - Lachesis aBFT finalises immediately, so there is no separate safe/finalized head.

Body

application/json

jsonrpcstringrequired

methodstringrequired

paramsArray<string>required

address: The address to check for transaction count.
block: The block parameter (e.g., "latest", "earliest", "pending").

idintegerrequired

Response

200OK

Hex encoded nonce (transaction count)

405Method Not Allowed

Method not served by this endpoint. The body is the plain-text string Method Not Allowed, not JSON.

422Unprocessable Entity

Missing API key - the api-key header was absent. The body is the plain-text string Missing API_key, not JSON.

Get the nonce of an address

curl -X POST 'https://vinu.nownodes.io/' \
  -H 'Content-Type: application/json' \
  -H 'api-key: YOUR_API_KEY' \
  -d '{"jsonrpc": "2.0", "method": "eth_getTransactionCount", "params": ["0x1b409ffc459802fbaa4a3797e86beb9a001b318e", "latest"], "id": 1}'

import { FetchRequest, JsonRpcProvider } from "ethers";

const request = new FetchRequest("https://vinu.nownodes.io/");
request.setHeader("api-key", "YOUR_API_KEY");

const provider = new JsonRpcProvider(request);
const result = await provider.send("eth_getTransactionCount", ["0x1b409ffc459802fbaa4a3797e86beb9a001b318e", "latest"]);
console.log(result);

require 'eth'
require 'json'
require 'net/http'

uri = URI('https://vinu.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request['api-key'] = 'YOUR_API_KEY'
request.body = '{"jsonrpc": "2.0", "method": "eth_getTransactionCount", "params": ["0x1b409ffc459802fbaa4a3797e86beb9a001b318e", "latest"], "id": 1}'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
  http.request(request)
end

puts JSON.parse(response.body)

from web3 import Web3

w3 = Web3(Web3.HTTPProvider(
    "https://vinu.nownodes.io/",
    request_kwargs={"headers": {"api-key": "YOUR_API_KEY"}},
))

response = w3.provider.make_request("eth_getTransactionCount", [
    "0x1b409ffc459802fbaa4a3797e86beb9a001b318e",
    "latest",
])
print(response)

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://vinu.nownodes.io/", {
    fetchOptions: { headers: { "api-key": "YOUR_API_KEY" } },
  }),
});

const result = await client.request({
  method: "eth_getTransactionCount",
  params: ["0x1b409ffc459802fbaa4a3797e86beb9a001b318e", "latest"],
});

console.log(result);

const endpoint = "https://vinu.nownodes.io/";
const apiKey = "YOUR_API_KEY";

async function nownodesRequest(payload) {
  const response = await fetch(endpoint, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "api-key": apiKey,
    },
    body: JSON.stringify(payload),
  });

  return response.json();
}

const result = await nownodesRequest({ jsonrpc: "2.0", method: "eth_getTransactionCount", params: [
  "0x1b409ffc459802fbaa4a3797e86beb9a001b318e",
  "latest"
], id: 1 });
console.log(result);

const response = await fetch('https://vinu.nownodes.io/', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'api-key': 'YOUR_API_KEY',
  },
  body: JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_getTransactionCount",
    "params": [
      "0x1b409ffc459802fbaa4a3797e86beb9a001b318e",
      "latest"
    ],
    "id": 1
  }),
});

const data = await response.json();

import requests

payload = {
    "jsonrpc": "2.0",
    "method": "eth_getTransactionCount",
    "params": [
        "0x1b409ffc459802fbaa4a3797e86beb9a001b318e",
        "latest",
    ],
    "id": 1,
}

response = requests.post(
    "https://vinu.nownodes.io/",
    json=payload,
    headers={"api-key": "YOUR_API_KEY"},
)

print(response.json())

require 'net/http'
require 'json'

uri = URI('https://vinu.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request['api-key'] = 'YOUR_API_KEY'
request.body = '{"jsonrpc": "2.0", "method": "eth_getTransactionCount", "params": ["0x1b409ffc459802fbaa4a3797e86beb9a001b318e", "latest"], "id": 1}'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
  http.request(request)
end

puts JSON.parse(response.body)

Request Body

{
  "jsonrpc": "2.0",
  "method": "eth_getTransactionCount",
  "params": [
    "0x1b409ffc459802fbaa4a3797e86beb9a001b318e",
    "latest"
  ],
  "id": 1
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x49124"
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32602,
    "message": "invalid argument"
  }
}

Method Not Allowed

Missing API_key