eth_estimateGas - HyperEVM

Example code for the eth_estimateGas JSON RPC method. Сomplete guide on how to use eth_estimateGas GetBlock JSON RPC in GetBlock Web3 documentation.

This method generates and returns an estimate of the amount of gas required to complete the transaction.

When using estimates in production, always include a safety buffer (recommended 10–20%) to avoid out-of-gas failures due to state changes between estimation and submission.

Parameters

Parameter

Type

Required

Description

transaction

object

Yes

Transaction call object.

block

string

Block parameter (only "latest" supported).

Transaction Object

Field

Type

Required

Description

from

string

Sender address.

string

Recipient/contract address.

gas

string

Gas limit (hex).

gasPrice

string

Gas price (hex).

value

string

Value to send (hex).

data

string

Transaction data (hex).

Request

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_estimateGas",
    "params": [{
        "from": "0x742d35Cc6634C0532925a3b844Bc9e7595f5bE21",
        "to": "0xContractAddress",
        "data": "0xa9059cbb000000000000000000000000RecipientAddress0000000000000000000000000000000000000000000000000de0b6b3a7640000"
    }],
    "id": "getblock.io"
}'

import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_estimateGas",
    "params": [{
        "from": "0x742d35Cc6634C0532925a3b844Bc9e7595f5bE21",
        "to": "0xContractAddress",
        "data": "0xa9059cbb000000000000000000000000RecipientAddress0000000000000000000000000000000000000000000000000de0b6b3a7640000"
    }],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data)))
    .catch(error => console.log(error));

import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "eth_estimateGas",
    "params": [{
        "from": "0x742d35Cc6634C0532925a3b844Bc9e7595f5bE21",
        "to": "0xContractAddress",
        "data": "0xa9059cbb000000000000000000000000RecipientAddress0000000000000000000000000000000000000000000000000de0b6b3a7640000"
    }],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

use reqwest::header;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = reqwest::Client::new();
    
    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header(header::CONTENT_TYPE, "application/json")
        .body(r#"{
    "jsonrpc": "2.0",
    "method": "eth_estimateGas",
    "params": [{
        "from": "0x742d35Cc6634C0532925a3b844Bc9e7595f5bE21",
        "to": "0xContractAddress",
        "data": "0xa9059cbb000000000000000000000000RecipientAddress0000000000000000000000000000000000000000000000000de0b6b3a7640000"
    }],
    "id": "getblock.io"
}"#)
        .send()
        .await?;
    
    println!("{}", response.text().await?);
    Ok(())
}

Response

response.json

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "0x5208"
}

Response Parameters

Field

Type

Description

result

string

Estimated gas required (hex).

Use Case

The eth_estimateGas method is essential for:

Setting appropriate gas limits for transactions
Cost estimation before sending
Transaction validation
UI gas cost displays
Preventing out-of-gas failures

Error Handling

Error Code

Message

Cause

-32602

Invalid params

Invalid transaction object.

-32603

Internal error

Estimation failed.

Execution reverted

Transaction would revert.

Web3 Integration

const { ethers } = require('ethers');

const provider = new ethers.JsonRpcProvider('https://go.getblock.io/<ACCESS-TOKEN>/');

async function estimateGas() {
    const gasEstimate = await provider.estimateGas({
        from: '0x742d35Cc6634C0532925a3b844Bc9e7595f5bE21',
        to: '0xContractAddress',
        data: '0xa9059cbb...'
    });
    console.log('Gas Estimate:', gasEstimate.toString());
}

estimateGas();

import { createPublicClient, http } from "viem";
import { hyperEvm } from "viem/chains";

// Create Viem client with GetBlock
const client = createPublicClient({
  chain: hyperEvm,
  transport: http(import.meta.env.HYPER_ACCESS_TOKEN),
});

// Using the method through Viem
async function Call() {
  try {
    // Method-specific Viem implementation
    const result = await client.request({
      method: "eth_estimateGas",
      params: [
       {
         from: "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb",
         to: "0x4bbeeb066ed09b7aed07bf39eee0460dfa261520",
         value: "0xde0b6b3a7640000",
       }]
    });
    return result;
  } catch (error) {
    console.error("Viem Error:", error);
    throw error;
  }
}

Previouseth_call - HyperEVM Nexteth_getLogs - HyperEVM

Last updated 1 month ago

Was this helpful?

hashtagParameters

hashtagTransaction Object

hashtagRequest

hashtagResponse

hashtagResponse Parameters

hashtagUse Case

hashtagError Handling

hashtagWeb3 Integration

Parameters

Transaction Object

Request

Response

Response Parameters

Use Case

Error Handling

Web3 Integration