> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

# web3_clientVersion | Arc

> Arc API method that returns the current client version. Arc is built on the Reth SDK. result — the current client version string.

Arc API method that returns the current client version. Arc is built on the Reth SDK.

## Parameters

* `none`

## Response

* `result` — the current client version string

## `web3_clientVersion` code examples

<CodeGroup>
  ```javascript ethers.js theme={"system"}
  const { ethers } = require("ethers");
  const NODE_URL = "CHAINSTACK_NODE_URL";
  const provider = new ethers.JsonRpcProvider(NODE_URL);

  async function getClientVersion() {
    const version = await provider.send("web3_clientVersion", []);
    console.log(`Client version: ${version}`);
  }

  getClientVersion()
  ```

  ```python web3.py theme={"system"}
  from web3 import Web3

  node_url = "CHAINSTACK_NODE_URL"
  web3 = Web3(Web3.HTTPProvider(node_url))
  print(web3.client_version)
  ```

  ```bash cURL theme={"system"}
  curl -X POST "CHAINSTACK_NODE_URL" \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc": "2.0", "method": "web3_clientVersion", "params": [], "id": 1}'
  ```
</CodeGroup>


## OpenAPI

````yaml openapi/arc_node_api/client_info/web3_clientVersion.json POST /
openapi: 3.0.0
info:
  title: Chainstack Node API
  version: 1.0.0
  description: This is an API for interacting with a Chainstack node.
servers:
  - url: https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c
security: []
paths:
  /:
    post:
      tags:
        - upload
      summary: web3_clientVersion
      operationId: web3_clientVersion
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                id:
                  type: integer
                  default: 1
                jsonrpc:
                  type: string
                  default: '2.0'
                method:
                  type: string
                  default: web3_clientVersion
                params:
                  type: array
                  default: []
      responses:
        '200':
          description: Returns the result of web3_clientVersion.
          content:
            application/json:
              schema:
                type: object
                properties:
                  jsonrpc:
                    type: string
                  id:
                    type: integer
                  result:
                    type: string
              example:
                jsonrpc: '2.0'
                id: 1
                result: reth/v1.11.3-d6324d6/x86_64-unknown-linux-gnu

````