Ethereum method - eth_call

POST

https://trx.nownodes.io/jsonrpc

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Executes a call to a contract or address and returns the result without broadcasting a transaction.

Body

application/json

Request value.

jsonrpcstringrequired

JSON-RPC protocol version.

methodstringrequired

JSON-RPC method name.

paramsArray<object | string>required

The first object specifies the call transaction object. The second (optional) parameter specifies the block context.

Show child attributes

Single array item value.

One of

fromstring

Address the call is sent from (optional)

tostringrequired

Target address for the call (required)

gasstring

Gas provided for the call, as hex

gasPricestring

Gas price in wei, as hex

valuestring

Amount of ETH sent, as hex (optional)

datastring

Compiled contract method call data

(Optional) Integer block number, or the string "latest", "earliest", or "pending".

string

idintegerrequired

Client request identifier echoed by the server.

Response

200OK

HTTP 200 response for eth_call. The body contains either a successful result or a node-level error.

400Bad Request

Bad Request. The request is malformed or contains invalid parameters.

401Unauthorized

Unauthorized: API key is present but rejected by the NOWNodes gateway.

405Method Not Allowed

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

422Unprocessable Entity

Missing API key. The NOWNodes gateway returns plain text for this error.

500Internal Server Error

Internal Server Error. The gateway or node failed while processing the request.

Ethereum method - eth_call

curl -X POST 'https://trx.nownodes.io/jsonrpc' \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_call",
    "params": [
      {
        "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
        "to": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
        "gas": "0x76c0",
        "gasPrice": "0x9184e72a000",
        "value": "0x0",
        "data": "0x70a08231000000000000000000000000a0df350d2637096571f7a701cbc1c5fd..."
      }
    ],
    "id": 1
  }'

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://trx.nownodes.io/jsonrpc");
const result = await provider.send("eth_call", [
  {
    "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
    "to": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
    "gas": "0x76c0",
    "gasPrice": "0x9184e72a000",
    "value": "0x0",
    "data": "0x70a08231000000000000000000000000a0df350d2637096571f7a701cbc1c5fd..."
  }
]);
console.log(result);

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

uri = URI('https://trx.nownodes.io/jsonrpc')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "jsonrpc": "2.0",
  "method": "eth_call",
  "params": [
    {
      "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
      "to": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
      "gas": "0x76c0",
      "gasPrice": "0x9184e72a000",
      "value": "0x0",
      "data": "0x70a08231000000000000000000000000a0df350d2637096571f7a701cbc1c5fd..."
    }
  ],
  "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://trx.nownodes.io/jsonrpc"))
response = w3.provider.make_request("eth_call", [
  {
    "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
    "to": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
    "gas": "0x76c0",
    "gasPrice": "0x9184e72a000",
    "value": "0x0",
    "data": "0x70a08231000000000000000000000000a0df350d2637096571f7a701cbc1c5fd..."
  }
])
print(response)

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://trx.nownodes.io/jsonrpc"),
});

const result = await client.request({
  method: "eth_call",
  params: [
  {
    "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
    "to": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
    "gas": "0x76c0",
    "gasPrice": "0x9184e72a000",
    "value": "0x0",
    "data": "0x70a08231000000000000000000000000a0df350d2637096571f7a701cbc1c5fd..."
  }
],
});

console.log(result);

const endpoint = "https://trx.nownodes.io/jsonrpc";
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_call", params: [
  {
    "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
    "to": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
    "gas": "0x76c0",
    "gasPrice": "0x9184e72a000",
    "value": "0x0",
    "data": "0x70a08231000000000000000000000000a0df350d2637096571f7a701cbc1c5fd..."
  }
], id: 1 });
console.log(result);

const response = await fetch('https://trx.nownodes.io/jsonrpc', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "jsonrpc": "2.0",
      "method": "eth_call",
      "params": [
        {
          "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
          "to": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
          "gas": "0x76c0",
          "gasPrice": "0x9184e72a000",
          "value": "0x0",
          "data": "0x70a08231000000000000000000000000a0df350d2637096571f7a701cbc1c5fd..."
        }
      ],
      "id": 1
    }),
});

const data = await response.json();

import requests

payload = {
  "jsonrpc": "2.0",
  "method": "eth_call",
  "params": [
    {
      "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
      "to": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
      "gas": "0x76c0",
      "gasPrice": "0x9184e72a000",
      "value": "0x0",
      "data": "0x70a08231000000000000000000000000a0df350d2637096571f7a701cbc1c5fd..."
    }
  ],
  "id": 1
}

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

require 'net/http'
require 'json'

uri = URI('https://trx.nownodes.io/jsonrpc')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "jsonrpc": "2.0",
    "method": "eth_call",
    "params": [
      {
        "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
        "to": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
        "gas": "0x76c0",
        "gasPrice": "0x9184e72a000",
        "value": "0x0",
        "data": "0x70a08231000000000000000000000000a0df350d2637096571f7a701cbc1c5fd..."
      }
    ],
    "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": "eth_call",
  "params": [
    {
      "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
      "to": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
      "gas": "0x76c0",
      "gasPrice": "0x9184e72a000",
      "value": "0x0",
      "data": "0x70a08231000000000000000000000000a0df350d2637096571f7a701cbc1c5fd..."
    }
  ],
  "id": 1
}

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32602,
    "message": "invalid argument 0: invalid parameter for eth_call"
  }
}

{
  "code": 400,
  "message": "Bad Request"
}

Unknown API_key

Method Not Allowed

Missing API_key

{
  "code": 500,
  "message": "Internal Server Error"
}

Documentation

How to migrate to NOWNodes

Ethereum method - eth_call

Authorizations

Body

Response