eth_getCode - HyperEVM

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

This method returns code at a given address.

Parameters

Parameter

Type

Required

Description

address

string

Yes

Address of the contract.

block

string

Yes

Block parameter (only "latest" supported).

Request

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

import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_getCode",
    "params": ["0xContractAddress", "latest"],
    "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_getCode",
    "params": ["0xContractAddress", "latest"],
    "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_getCode",
            "params": ["0xContractAddress", "latest"],
            "id": "getblock.io"
        }"#)
        .send()
        .await?;
    
    println!("{}", response.text().await?);
    Ok(())
}

Response

response.json

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "0x608060405234801561001057600080fd5b50..."
}

Response Parameters

Field

Type

Description

result

string

Bytecode at the address (hex). Returns "0x" for EOAs.

Use Case

The eth_getCode method is essential for:

Verifying if an address is a contract
Contract verification systems
Security analysis tools
Distinguishing EOAs from contracts
Smart contract explorers

Error Handling

Error Code

Message

Cause

-32602

Invalid params

Invalid address format.

-32603

Internal error

Node issue.

Web3 Integration

import  ethers from 'ethers';

const provider = new ethers.JsonRpcProvider('https://go.getblock.io//');

async function getCode() {
    const code = await provider.getCode('0xContractAddress');
    console.log('Contract Code Length:', code.length);
    console.log('Is Contract:', code !== '0x');
}

getCode();

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_getCode",
    params: ["0x55962b6c47ae83427d02bcb9832adef4ece7bbf6", "latest"],
};
    return result;
  } catch (error) {
    console.error("Viem Error:", error);
    throw error;
  }
}

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