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POST
/
b9b0fb92029d58b396139a9e89cf479b
web3_clientVersion
curl --request POST \
  --url https://nd-907-114-772.p2pify.com/b9b0fb92029d58b396139a9e89cf479b \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "web3_clientVersion",
  "params": []
}
'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<string>"
}
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.
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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.
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