web3_clientVersion - Arbitrum

Example code for the web3_clientVersion JSON RPC method. Сomplete guide on how to use web3_clientVersion JSON RPC in GetBlock Web3 documentation.

This method returns the current client version.

Parameters

None

Request

curl --location 'https://go.getblock.us/<ACCESS_TOKEN>' \
--header 'Content-Type: application/json' \
--data '{
   "jsonrpc": "2.0",
    "method": "web3_clientVersion",
    "params": []
    "id": "getblock.io"
}'

import axios from 'axios'
let data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "web3_clientVersion",
    "params": [],
    "id": "getblock.io"
};

let config = {
  method: "post",
  maxBodyLength: Infinity,
  url: "https://go.getblock.us/<ACCESS_TOKEN>",
  headers: {
    "Content-Type": "application/json",
  },
  data: data,
};

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

import requests
import json

url = "https://go.getblock.us/<ACESS_TOKEN>"

payload = json.dumps({
   jsonrpc": "2.0",
    "method": "web3_clientVersion",
    "params": []
    "id": "getblock.io"
})
headers = {
  'Content-Type': 'application/json'
}

response = requests.request("POST", url, headers=headers, data=payload)

print(response.text)

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = reqwest::Client::builder()
        .build()?;

    let mut headers = reqwest::header::HeaderMap::new();
    headers.insert("Content-Type", "application/json".parse()?);

    let data = r#"{
   jsonrpc": "2.0",
    "method": "web3_clientVersion",
    "params": []
    "id": "getblock.io"
}"#;

    let json: serde_json::Value = serde_json::from_str(&data)?;

    let request = client.request(reqwest::Method::POST, "https://go.getblock.us/<ACCESS_TOKEN>")
        .headers(headers)
        .json(&json);

    let response = request.send().await?;
    let body = response.text().await?;

    println!("{}", body);

    Ok(())
}

Response

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "nitro/v3.9.4-7f582c3/linux-amd64/go1.25.5"
}

Reponse Parameter Definition

Field

Type

Description

jsonrpc

string

JSON-RPC version.

integer

Request identifier.

result

string

A string identifying the client software name, version, and platform.

Use case

The web3_clientVersion method helps developers to:

For diagnostic purposes, to identify which client is running.
Check compatibility with specific dApp features.
Monitor network node versions in infrastructure or DevOps dashboards.
Ensure uniform client versions across multiple nodes for reliability.

Error handling

Status Code

Error Message

Cause

403

Forbidden

Missing or invalid ACCESS_TOKEN.

Integration with Web3

Using web3_clientVersion allows developers to:

Identify client type (e.g., Geth, OpenEthereum, Besu, Arbitrum node).
Enable conditional logic in dApps depending on node features.
Integrate version checks for automated node monitoring dashboards.
Detect outdated clients for security or protocol compliance.

import { ethers } from "ethers";
const RPC_URL = "https://go.getblock.us/<ACCESS_TOKEN>";
const provider = new ethers.JsonRpcProvider(RPC_URL);
async function Call() {
  try {
     const result = await provider.send( "web3_clientVersion",
[],);    
console.log("The result:", result);
    return result;
  } catch (error) {
    console.error("The error:", error);
    throw error;
  }
}

import { createPublicClient, http } from 'viem';
import { arbitrum } from 'viem/chains';

// Create Viem client with GetBlock
const client = createPublicClient({
  chain: arbitrum,
  transport: http('https://go.getblock.us/<ACCESS_TOKEN>'
});

// Using the method through Viem
async function Call() {
    try {
        // Method-specific Viem implementation
        const result = await client.request({
          method: "web3_clientVersion",
          params: [
          ],
        });
        console.log('Result:', result);
        return result;
    } catch (error) {
        console.error('Viem Error:', error);
        throw error;
    }
}

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