Get a transaction by block number and index

POST

https://vinu.nownodes.io/

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Returns the information about a transaction using the block number and the transaction index within the block.

Changed in the 29 August 2026 network upgrade.

authorizationList is returned on EIP-7702 set-code transactions (type: "0x4"), supported since the 29 August 2026 upgrade.
feeRefund is now omitted when the node has no refund value for the transaction - most visibly on transactions still in the pool, where "0x0" used to be returned. Treat a missing feeRefund as unknown, not as zero.

Body

application/json

jsonrpcstringrequired

methodstringrequired

paramsArray<string>required

Parameters:

Block number in hex format (e.g., "0x5daf3b")
Transaction index in the block (e.g., "0x0")

idintegerrequired

Response

200OK

A transaction object, or null if not found.

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 a transaction by block number and index

curl -X POST 'https://vinu.nownodes.io/' \
  -H 'Content-Type: application/json' \
  -H 'api-key: YOUR_API_KEY' \
  -d '{"jsonrpc": "2.0", "method": "eth_getTransactionByBlockNumberAndIndex", "params": ["0xdf73b1", "0x0"], "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_getTransactionByBlockNumberAndIndex", ["0xdf73b1", "0x0"]);
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_getTransactionByBlockNumberAndIndex", "params": ["0xdf73b1", "0x0"], "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_getTransactionByBlockNumberAndIndex", [
    "0xdf73b1",
    "0x0",
])
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_getTransactionByBlockNumberAndIndex",
  params: ["0xdf73b1", "0x0"],
});

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_getTransactionByBlockNumberAndIndex", params: [
  "0xdf73b1",
  "0x0"
], 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_getTransactionByBlockNumberAndIndex",
    "params": [
      "0xdf73b1",
      "0x0"
    ],
    "id": 1
  }),
});

const data = await response.json();

import requests

payload = {
    "jsonrpc": "2.0",
    "method": "eth_getTransactionByBlockNumberAndIndex",
    "params": [
        "0xdf73b1",
        "0x0",
    ],
    "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_getTransactionByBlockNumberAndIndex", "params": ["0xdf73b1", "0x0"], "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_getTransactionByBlockNumberAndIndex",
  "params": [
    "0xdf73b1",
    "0x0"
  ],
  "id": 1
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0x00001eac000002ba917f7c3bf5f9307aca56ff3adfe21306781bd837f2477159",
    "blockNumber": "0xdf73b1",
    "from": "0x1b409ffc459802fbaa4a3797e86beb9a001b318e",
    "gas": "0x5208",
    "gasPrice": "0xa804fa440",
    "maxFeePerGas": "0xa804fa440",
    "maxPriorityFeePerGas": "0xa804fa440",
    "hash": "0xec5b31b6e0c52a4864fc07a11e383bf49a680eca308ee36cedb44823fa88c422",
    "input": "0x",
    "nonce": "0x49122",
    "to": "0xd008ffcd4b0cd8cafc7a04819fee3dd21e284cdb",
    "transactionIndex": "0x0",
    "value": "0xb8bdb978520000",
    "type": "0x2",
    "accessList": [],
    "chainId": "0xcf",
    "v": "0x0",
    "r": "0xc3fcbf453dc189dc4b168e7f120bfef83fe5133e057a4565b5e7bd3541d2a170",
    "s": "0x5b2a5c291c9d8ebb14c74a112e43a1a75eb493dc1702c473e5a537cc73cfc42b",
    "feeRefund": "0x0",
    "authorizationList": [
      {
        "chainId": "0xcf",
        "address": "0x3535353535353535353535353535353535353535",
        "nonce": "0x1",
        "yParity": "0x0",
        "r": "0xc3fcbf453dc189dc4b168e7f120bfef83fe5133e057a4565b5e7bd3541d2a170",
        "s": "0x5b2a5c291c9d8ebb14c74a112e43a1a75eb493dc1702c473e5a537cc73cfc42b"
      }
    ]
  }
}

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

Method Not Allowed

Missing API_key