> ## 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.

<AgentInstructions>

## Submitting Feedback

If you encounter incorrect, outdated, or confusing documentation on this page, submit feedback:

POST https://docs.chainstack.com/feedback

```json
{
  "path": "/reference/cronos-clientversion",
  "feedback": "Description of the issue"
}
```

Only submit feedback when you have something specific and actionable to report.

</AgentInstructions>

# web3_clientVersion | Cronos

Cronos API method that returns the client type and version running on the Cronos node. This information can be useful to developers to verify that a node they are connecting to is compatible with their needs.

<Check>
  **Get your own node endpoint today**

  [Start for free](https://console.chainstack.com/) and get your app to production levels immediately. No credit card required.

  You can sign up with your GitHub, X, Google, or Microsoft account.
</Check>

## Parameters

* `none`

## Response

* `string` — a string identifying the type of client, version, operating system, and language version running on the node

## `web3_clientVersion` code examples

<CodeGroup>
  ```javascript web3.js theme={"system"}
  const { Web3 } = require("web3");
  const NODE_URL = "CHAINSTACK_NODE_URL";
  const web3 = new Web3(NODE_URL);

  async function getClient() {
    const client = await web3.eth.getNodeInfo();
    console.log(client);
  }

  getClient();
  ```

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

  const clientVersion = async () => {
    const version = await provider.send("web3_clientVersion");
    console.log(`Client version: ${version}`);
  };

  clientVersion();
  ```

  ```python web3.py theme={"system"}
  from web3 import Web3  
  node_url = "CHAINSTACK_NODE_URL"
  web3 = Web3.HTTPProvider(node_url)

  client_version = web3.provider.make_request('web3_clientVersion', [])
  print(client_version)
  ```
</CodeGroup>

## Use case

A use case for the `web3_clientVersion` method can be to verify which client is running to then decide which method to run.

<Note>
  Read [Expanding your blockchain horizons: The eth\_getBlockReceipts emulator](/docs/expanding-your-blockchain-horizons-the-eth_getblockreceipts-emulator) to learn how to build a program to emulate `eth_getBlockReceipts` on any EVM-compatible chain.
</Note>


## OpenAPI

````yaml /openapi/cronos_node_api/web3_clientVersion.json POST /b9b0fb92029d58b396139a9e89cf479b
openapi: 3.0.0
info:
  title: Cronos Node API
  version: 1.0.0
  description: This is an API for interacting with a Cronos node.
servers:
  - url: https://nd-907-114-772.p2pify.com
security: []
paths:
  /b9b0fb92029d58b396139a9e89cf479b:
    post:
      tags:
        - Update
      summary: web3_clientVersion
      operationId: 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: The client running on this node.
          content:
            application/json:
              schema:
                type: object
                properties:
                  jsonrpc:
                    type: string
                  id:
                    type: integer
                  result:
                    type: string

````