Execute bytecodes

POST

https://meter.nownodes.io/accounts

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

to simulate contract deployment without sending transaction to block chain.

It's useful to estimate gas usage and contract deployment result of a clause.

TIPS:

data in request body is the bytecodes of a contract
data in response body is the runtime bytecodes assigned to account which the contract to be deployed

Body

application/json

arguments and environment

valuestring

amount of token to be transferred

datastring

input data for contract call

gasinteger<uint64>

max allowed gas for execution

gasPricestring

absolute gas price

callerstring

caller address (msg.sender)

Parameters

revisionstringquery

can be block number or ID. best block is assumed if omitted.

Response

200OK

Execute bytecodes

curl -X POST 'https://meter.nownodes.io/accounts' \
  -H 'Content-Type: application/json' \
  -d '{
    "value": "0xde0b6b3a7640000",
    "data": "0x5665436861696e2054686f72"
  }'

const response = await fetch('https://meter.nownodes.io/accounts', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "value": "0xde0b6b3a7640000",
      "data": "0x5665436861696e2054686f72"
    }),
});

const data = await response.json();

require 'net/http'
require 'json'

uri = URI('https://meter.nownodes.io/accounts')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "value": "0xde0b6b3a7640000",
    "data": "0x5665436861696e2054686f72"
  }'

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

import requests

payload = {
  "value": "0xde0b6b3a7640000",
  "data": "0x5665436861696e2054686f72"
}

response = requests.post('https://meter.nownodes.io/accounts', json=payload)
data = response.json()

const response = await fetch('https://meter.nownodes.io/accounts', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "value": "0xde0b6b3a7640000",
      "data": "0x5665436861696e2054686f72"
    }),
});

const data = await response.json();

const endpoint = "https://meter.nownodes.io/accounts";
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({
    "value": "0xde0b6b3a7640000",
    "data": "0x5665436861696e2054686f72"
  });
console.log(result);

const response = await fetch('https://meter.nownodes.io/accounts', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "value": "0xde0b6b3a7640000",
      "data": "0x5665436861696e2054686f72"
    }),
});

const data = await response.json();

import requests

payload = {
  "value": "0xde0b6b3a7640000",
  "data": "0x5665436861696e2054686f72"
}

response = requests.post('https://meter.nownodes.io/accounts', json=payload)
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://meter.nownodes.io/accounts')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "value": "0xde0b6b3a7640000",
    "data": "0x5665436861696e2054686f72"
  }'

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

Request Body

{
  "value": "0xde0b6b3a7640000",
  "data": "0x5665436861696e2054686f72"
}

200

{
  "data": "0x103556a73c10e38ffe2fc4aa50fc9d46ad0148f07e26417e117bd1ece9d948b5",
  "events": [
    {
      "address": "0x7567d83b7b8d80addcb281a71d54fc7b3364ffed",
      "topics": [
        "0x4de71f2d588aa8a1ea00fe8312d92966da424d9939a511fc0be81e65fad52af8"
      ],
      "data": "0x4de71f2d588aa8a1ea00fe8312d92966da424d9939a511fc0be81e65fad52af8"
    }
  ],
  "transfers": [
    {
      "sender": "0xdb4027477b2a8fe4c83c6dafe7f86678bb1b8a8d",
      "recipient": "0x5034aa590125b64023a0262112b98d72e3c8e40e",
      "amount": "0x47fdb3c3f456c0000"
    }
  ],
  "gasUsed": 21000,
  "reverted": false,
  "vmError": ""
}