POST
/
4ab982aa70a7baead515ffdb5915df3f
curl --request POST \
  --url https://fantom-mainnet.core.chainstack.com/4ab982aa70a7baead515ffdb5915df3f \
  --header 'Content-Type: application/json' \
  --data '{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "web3_clientVersion",
  "params": []
}'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<string>"
}

Fantom API method that returns the client type and version running on the Fantom 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
any[]

Response

200 - application/json
The client running on this node.
​
jsonrpc
string
​
id
integer
​
result
string