Send transaction

POST

https://icx.nownodes.io/api/v3

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Submits a transaction to the ICON blockchain.

Body

application/json

JSON-RPC request object

jsonrpcstringrequired

JSON-RPC protocol version.

idintegerrequired

Unique identifier for the JSON-RPC request.

methodstringrequired

JSON-RPC method name.

paramsobjectrequired

Transaction parameters.

Show child attributes

versionstring

Transaction version.

fromstring

Sender address.

tostring

Recipient address.

valuestring

Amount of ICX to send in loop (hexadecimal).

stepLimitstring

Maximum step allowed for the transaction.

timestampstring

Timestamp of the transaction in hexadecimal format.

nidstring

Network ID.

noncestring

Nonce for transaction uniqueness.

signaturestring

Transaction signature.

Response

200OK

Successful response containing the transaction hash.

Send transaction

curl -X POST 'https://icx.nownodes.io/api/v3' \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "icx_sendTransaction",
    "params": {
      "version": "0x3",
      "from": "hx49b1556654e51f52d59a8222b4737ee7dccc6d1b",
      "to": "hx0341962988c44dd8a47e419f8eab6bf4383aa23a",
      "value": "0x8ac7230489e80000",
      "stepLimit": "0x186a0",
      "timestamp": "0x578177c2fe6e8",
      "nid": "0x1",
      "nonce": "0x1",
      "signature": "VAliDsiGnATurE1234567890abcdef..."
    }
  }'

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://icx.nownodes.io/api/v3");
const result = await provider.send("icx_sendTransaction", {
  "version": "0x3",
  "from": "hx49b1556654e51f52d59a8222b4737ee7dccc6d1b",
  "to": "hx0341962988c44dd8a47e419f8eab6bf4383aa23a",
  "value": "0x8ac7230489e80000",
  "stepLimit": "0x186a0",
  "timestamp": "0x578177c2fe6e8",
  "nid": "0x1",
  "nonce": "0x1",
  "signature": "VAliDsiGnATurE1234567890abcdef..."
});
console.log(result);

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

uri = URI('https://icx.nownodes.io/api/v3')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "jsonrpc": "2.0",
  "method": "icx_sendTransaction",
  "params": {
    "version": "0x3",
    "from": "hx49b1556654e51f52d59a8222b4737ee7dccc6d1b",
    "to": "hx0341962988c44dd8a47e419f8eab6bf4383aa23a",
    "value": "0x8ac7230489e80000",
    "stepLimit": "0x186a0",
    "timestamp": "0x578177c2fe6e8",
    "nid": "0x1",
    "nonce": "0x1",
    "signature": "VAliDsiGnATurE1234567890abcdef..."
  },
  "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://icx.nownodes.io/api/v3"))
response = w3.provider.make_request("icx_sendTransaction", {
  "version": "0x3",
  "from": "hx49b1556654e51f52d59a8222b4737ee7dccc6d1b",
  "to": "hx0341962988c44dd8a47e419f8eab6bf4383aa23a",
  "value": "0x8ac7230489e80000",
  "stepLimit": "0x186a0",
  "timestamp": "0x578177c2fe6e8",
  "nid": "0x1",
  "nonce": "0x1",
  "signature": "VAliDsiGnATurE1234567890abcdef..."
})
print(response)

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://icx.nownodes.io/api/v3"),
});

const result = await client.request({
  method: "icx_sendTransaction",
  params: {
  "version": "0x3",
  "from": "hx49b1556654e51f52d59a8222b4737ee7dccc6d1b",
  "to": "hx0341962988c44dd8a47e419f8eab6bf4383aa23a",
  "value": "0x8ac7230489e80000",
  "stepLimit": "0x186a0",
  "timestamp": "0x578177c2fe6e8",
  "nid": "0x1",
  "nonce": "0x1",
  "signature": "VAliDsiGnATurE1234567890abcdef..."
},
});

console.log(result);

const endpoint = "https://icx.nownodes.io/api/v3";
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: "icx_sendTransaction", params: {
  "version": "0x3",
  "from": "hx49b1556654e51f52d59a8222b4737ee7dccc6d1b",
  "to": "hx0341962988c44dd8a47e419f8eab6bf4383aa23a",
  "value": "0x8ac7230489e80000",
  "stepLimit": "0x186a0",
  "timestamp": "0x578177c2fe6e8",
  "nid": "0x1",
  "nonce": "0x1",
  "signature": "VAliDsiGnATurE1234567890abcdef..."
}, id: 1 });
console.log(result);

const response = await fetch('https://icx.nownodes.io/api/v3', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "jsonrpc": "2.0",
      "id": 1,
      "method": "icx_sendTransaction",
      "params": {
        "version": "0x3",
        "from": "hx49b1556654e51f52d59a8222b4737ee7dccc6d1b",
        "to": "hx0341962988c44dd8a47e419f8eab6bf4383aa23a",
        "value": "0x8ac7230489e80000",
        "stepLimit": "0x186a0",
        "timestamp": "0x578177c2fe6e8",
        "nid": "0x1",
        "nonce": "0x1",
        "signature": "VAliDsiGnATurE1234567890abcdef..."
      }
    }),
});

const data = await response.json();

import requests

payload = {
  "jsonrpc": "2.0",
  "id": 1,
  "method": "icx_sendTransaction",
  "params": {
    "version": "0x3",
    "from": "hx49b1556654e51f52d59a8222b4737ee7dccc6d1b",
    "to": "hx0341962988c44dd8a47e419f8eab6bf4383aa23a",
    "value": "0x8ac7230489e80000",
    "stepLimit": "0x186a0",
    "timestamp": "0x578177c2fe6e8",
    "nid": "0x1",
    "nonce": "0x1",
    "signature": "VAliDsiGnATurE1234567890abcdef..."
  }
}

response = requests.post('https://icx.nownodes.io/api/v3', json=payload)
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://icx.nownodes.io/api/v3')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "icx_sendTransaction",
    "params": {
      "version": "0x3",
      "from": "hx49b1556654e51f52d59a8222b4737ee7dccc6d1b",
      "to": "hx0341962988c44dd8a47e419f8eab6bf4383aa23a",
      "value": "0x8ac7230489e80000",
      "stepLimit": "0x186a0",
      "timestamp": "0x578177c2fe6e8",
      "nid": "0x1",
      "nonce": "0x1",
      "signature": "VAliDsiGnATurE1234567890abcdef..."
    }
  }'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

Request Body

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "icx_sendTransaction",
  "params": {
    "version": "0x3",
    "from": "hx49b1556654e51f52d59a8222b4737ee7dccc6d1b",
    "to": "hx0341962988c44dd8a47e419f8eab6bf4383aa23a",
    "value": "0x8ac7230489e80000",
    "stepLimit": "0x186a0",
    "timestamp": "0x578177c2fe6e8",
    "nid": "0x1",
    "nonce": "0x1",
    "signature": "VAliDsiGnATurE1234567890abcdef..."
  }
}

200

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0xeea6ca0f1835978fe1fbe8fd2b95052815edd4ad218aa08295bf4ce9a079bb10"
}

Documentation

How to migrate to NOWNodes

Send transaction

Authorizations

Body

Response