web3_sha3

POST

wss://pulse.nownodes.io/wss/{api_key}

Returns Keccak-256 (not the standardized SHA3-256) of the given data.

Connection URL:

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wss://pulse.nownodes.io/wss/{{api_key}}

Open the connection, then send the message below as a text frame.

Example:

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wscat -c 'wss://pulse.nownodes.io/wss/YOUR_API_KEY'
> {"jsonrpc":"2.0","method":"web3_sha3","params":["0x67656c6c6f20776f726c64"],"id":1}

Body

application/json

object

Parameters

api_keystringrequiredpath

Your NOWNodes API key.

Response

200OK

A successful response.

web3_sha3

curl -X POST 'wss://pulse.nownodes.io/wss/{api_key}' \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0",
    "method": "web3_sha3",
    "params": [
      "0x67656c6c6f20776f726c64"
    ],
    "id": 1
  }'

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("wss://pulse.nownodes.io/wss/{api_key}");
const result = await provider.send("web3_sha3", [
  "0x67656c6c6f20776f726c64"
]);
console.log(result);

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

uri = URI('wss://pulse.nownodes.io/wss/{api_key}')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "jsonrpc": "2.0",
  "method": "web3_sha3",
  "params": [
    "0x67656c6c6f20776f726c64"
  ],
  "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("wss://pulse.nownodes.io/wss/{api_key}"))
response = w3.provider.make_request("web3_sha3", [
  "0x67656c6c6f20776f726c64"
])
print(response)

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("wss://pulse.nownodes.io/wss/{api_key}"),
});

const result = await client.request({
  method: "web3_sha3",
  params: [
  "0x67656c6c6f20776f726c64"
],
});

console.log(result);

const endpoint = "wss://pulse.nownodes.io/wss/{api_key}";
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: "web3_sha3", params: [
  "0x67656c6c6f20776f726c64"
], id: 1 });
console.log(result);

const response = await fetch('wss://pulse.nownodes.io/wss/{api_key}', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "jsonrpc": "2.0",
      "method": "web3_sha3",
      "params": [
        "0x67656c6c6f20776f726c64"
      ],
      "id": 1
    }),
});

const data = await response.json();

import requests

payload = {
  "jsonrpc": "2.0",
  "method": "web3_sha3",
  "params": [
    "0x67656c6c6f20776f726c64"
  ],
  "id": 1
}

response = requests.post('wss://pulse.nownodes.io/wss/{api_key}', json=payload)
data = response.json()

require 'net/http'
require 'json'

uri = URI('wss://pulse.nownodes.io/wss/{api_key}')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "jsonrpc": "2.0",
    "method": "web3_sha3",
    "params": [
      "0x67656c6c6f20776f726c64"
    ],
    "id": 1
  }'

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",
  "method": "web3_sha3",
  "params": [
    "0x67656c6c6f20776f726c64"
  ],
  "id": 1
}

200

"{\n    \"jsonrpc\": \"2.0\",\n    \"id\": 1,\n    \"result\": \"0x1b84adea42d5b7d192fd8a61a85b25abe0757e9a65cab1da470258914053823f\"\n}pulse\n"