Robinhood Chain method - eth_simulateV1

POST

https://robinhood.nownodes.io/

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Simulates one or more blocks of calls on top of a given block, optionally overriding state, and returns the result of every call.

Body

application/json

JSON-RPC 2.0 request to the Robinhood Chain mainnet endpoint.

Request payload for Simulates one or more blocks of calls on top of a given block, optionally overriding state, and returns the result of every call.

jsonrpcstringrequired

JSON-RPC protocol version

methodstringrequired

Name of the method to call

paramsArray<any>required

Parameters for eth_simulateV1.

idintegerrequired

Unique identifier for the request

Response

200OK

eth_simulateV1 response

500Internal Server Error

Upstream node or gateway error.

Robinhood Chain method - eth_simulateV1

curl -X POST 'https://robinhood.nownodes.io/' \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_simulateV1",
    "params": [
      {
        "blockStateCalls": [
          {
            "calls": [
              {
                "from": "0xe150982cac57950884dc1691fd9d6e4fcadac3d3",
                "to": "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73",
                "data": "0x06fdde03"
              }
            ]
          }
        ]
      },
      "latest"
    ],
    "id": 1
  }'

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://robinhood.nownodes.io/");
const result = await provider.send("eth_simulateV1", [
  {
    "blockStateCalls": [
      {
        "calls": [
          {
            "from": "0xe150982cac57950884dc1691fd9d6e4fcadac3d3",
            "to": "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73",
            "data": "0x06fdde03"
          }
        ]
      }
    ]
  },
  "latest"
]);
console.log(result);

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

uri = URI('https://robinhood.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "jsonrpc": "2.0",
  "method": "eth_simulateV1",
  "params": [
    {
      "blockStateCalls": [
        {
          "calls": [
            {
              "from": "0xe150982cac57950884dc1691fd9d6e4fcadac3d3",
              "to": "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73",
              "data": "0x06fdde03"
            }
          ]
        }
      ]
    },
    "latest"
  ],
  "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://robinhood.nownodes.io/"))
response = w3.provider.make_request("eth_simulateV1", [
  {
    "blockStateCalls": [
      {
        "calls": [
          {
            "from": "0xe150982cac57950884dc1691fd9d6e4fcadac3d3",
            "to": "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73",
            "data": "0x06fdde03"
          }
        ]
      }
    ]
  },
  "latest"
])
print(response)

import { createPublicClient, http } from "viem";

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

const result = await client.request({
  method: "eth_simulateV1",
  params: [
  {
    "blockStateCalls": [
      {
        "calls": [
          {
            "from": "0xe150982cac57950884dc1691fd9d6e4fcadac3d3",
            "to": "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73",
            "data": "0x06fdde03"
          }
        ]
      }
    ]
  },
  "latest"
],
});

console.log(result);

const endpoint = "https://robinhood.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_simulateV1", params: [
  {
    "blockStateCalls": [
      {
        "calls": [
          {
            "from": "0xe150982cac57950884dc1691fd9d6e4fcadac3d3",
            "to": "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73",
            "data": "0x06fdde03"
          }
        ]
      }
    ]
  },
  "latest"
], id: 1 });
console.log(result);

const response = await fetch('https://robinhood.nownodes.io/', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "jsonrpc": "2.0",
      "method": "eth_simulateV1",
      "params": [
        {
          "blockStateCalls": [
            {
              "calls": [
                {
                  "from": "0xe150982cac57950884dc1691fd9d6e4fcadac3d3",
                  "to": "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73",
                  "data": "0x06fdde03"
                }
              ]
            }
          ]
        },
        "latest"
      ],
      "id": 1
    }),
});

const data = await response.json();

import requests

payload = {
  "jsonrpc": "2.0",
  "method": "eth_simulateV1",
  "params": [
    {
      "blockStateCalls": [
        {
          "calls": [
            {
              "from": "0xe150982cac57950884dc1691fd9d6e4fcadac3d3",
              "to": "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73",
              "data": "0x06fdde03"
            }
          ]
        }
      ]
    },
    "latest"
  ],
  "id": 1
}

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

require 'net/http'
require 'json'

uri = URI('https://robinhood.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "jsonrpc": "2.0",
    "method": "eth_simulateV1",
    "params": [
      {
        "blockStateCalls": [
          {
            "calls": [
              {
                "from": "0xe150982cac57950884dc1691fd9d6e4fcadac3d3",
                "to": "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73",
                "data": "0x06fdde03"
              }
            ]
          }
        ]
      },
      "latest"
    ],
    "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_simulateV1",
  "params": [
    {
      "blockStateCalls": [
        {
          "calls": [
            {
              "from": "0xe150982cac57950884dc1691fd9d6e4fcadac3d3",
              "to": "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73",
              "data": "0x06fdde03"
            }
          ]
        }
      ]
    },
    "latest"
  ],
  "id": 1
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    {
      "baseFeePerGas": "0x0",
      "blobGasUsed": "0x0",
      "calls": [
        {
          "returnData": "0x000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000045745544800000000000000000000000000000000000000000000000000000000",
          "logs": [],
          "gasUsed": "0x7ad7",
          "status": "0x1"
        }
      ],
      "difficulty": "0x1",
      "excessBlobGas": "0x0",
      "extraData": "0xe6d85bba3b01c5bb127c66ca84b5f9e9376cbffe8bf8de8f5cf3a015aef5b407",
      "gasLimit": "0x4000000000000",
      "gasUsed": "0x7ad7",
      "hash": "0x4cc4e334a63579c5337603c03174d4e4b953becbcd113187242f71d7ec877937",
      "l1BlockNumber": "0x1884319",
      "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
      "miner": "0xa4b000000000000000000073657175656e636572",
      "mixHash": "0x00000000000004020000000001884319000000000000003d0000000000000000",
      "nonce": "0x0000000000000000",
      "number": "0x1d4b4c7",
      "parentBeaconBlockRoot": "0x0000000000000000000000000000000000000000000000000000000000000000",
      "parentHash": "0x698c5e73ed91280c91e92d0a821ae50e3a26bd2d71c63d5d437725c8994175a0",
      "receiptsRoot": "0x42bc4965b231dfa94ccce473ff87018f151ddc631c0bece0fcc68860661633cf",
      "sendCount": "0x402",
      "sendRoot": "0xe6d85bba3b01c5bb127c66ca84b5f9e9376cbffe8bf8de8f5cf3a015aef5b407",
      "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
      "size": "0x27a",
      "stateRoot": "0x463a45614ed548c6472aaea94afd52b1909c8871c0b1847073c45456b671c33f",
      "timestamp": "0x6a769564",
      "transactions": [
        "0x60d7929492a589f5abe5a3bde7c66c77f68afc57bb38039183b4abea9e3b2470"
      ],
      "transactionsRoot": "0x61023a6f6b5545407c821663567b081fc35d9c492506d3ffbc765d175ca07e8f",
      "uncles": []
    }
  ]
}

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32602,
    "message": "too many arguments, want at most 0"
  }
}

Documentation

How to migrate to NOWNodes

Robinhood Chain method - eth_simulateV1

Authorizations

Body

Response