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POST
/
942aad90bb6a082676497030b81e40ba
web3_clientVersion
curl --request POST \
  --url https://nd-363-550-219.p2pify.com/942aad90bb6a082676497030b81e40ba \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "web3_clientVersion",
  "params": []
}
'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<string>"
}

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.

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

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();

​
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. Let’s say you have a DApp that needs to retrieve all of the transaction receipts in a block; the Erigon client has a method for this, eth_getBlockReceipts, but with Geth, this method is only available starting from V1.13.0. You can use the web3_clientVersion method in your logic to identify which client you are using to see if you have the method available.
Read Expanding your blockchain horizons: The eth_getBlockReceipts emulator to learn how to build a program to emulate eth_getBlockReceipts on any EVM-compatible chain.

Body

application/json
​
id
integer
default:1
​
jsonrpc
string
default:2.0
​
method
string
default:web3_clientVersion
​
params
array

Response

200 - application/json

The client running on this node.

​
jsonrpc
string
​
id
integer
​
result
string
Last modified on May 18, 2026