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eth_estimategas - Worldchain

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

Generates and returns an estimate of the gas required to complete the transaction on the World Chain network.

Parameters

Parameter
Type
Description

transaction

object

Transaction call object with to, data, and optional from, gas, gasPrice, value

blockNumber

string

(Optional) Block number in hex, or "latest", "earliest", "pending"

Request

curl --location --request POST 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_estimateGas",
    "params": [{"from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e", "to": "0x1234567890123456789012345678901234567890", "value": "0x9184e72a000"}],
    "id": "getblock.io"
}'
estimateGas.js
import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_estimateGas",
    "params": [{"from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e", "to": "0x1234567890123456789012345678901234567890", "value": "0x9184e72a000"}],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://shared.eu-central-1.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));

Response

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

Response Parameters

Field
Type
Description

result

string

Hexadecimal representation of the estimated gas amount

Use Case

The eth_estimateGas method on World Chain is typically used for:

  • Gas estimation

  • Transaction cost calculation

  • Gas limit setting

  • Fee optimization

Error Handling

Status Code
Error Message
Cause

403

Forbidden

Missing or invalid ACCESS-TOKEN

Web3 Integration

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