arc_getVersion

curl --request POST \
  --url https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "arc_getVersion",
  "params": []
}
'

import requests

url = "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/"

payload = {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "arc_getVersion",
    "params": []
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({id: 1, jsonrpc: '2.0', method: 'arc_getVersion', params: []})
};

fetch('https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'id' => 1,
    'jsonrpc' => '2.0',
    'method' => 'arc_getVersion',
    'params' => [
        
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/"

	payload := strings.NewReader("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"arc_getVersion\",\n  \"params\": []\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"arc_getVersion\",\n  \"params\": []\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"arc_getVersion\",\n  \"params\": []\n}"

response = http.request(request)
puts response.read_body

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "git_version": "v0.7.2",
    "git_commit": "a85368c0b0a7924e4c74035d195f96deb0291622",
    "git_short_hash": "a85368c0",
    "cargo_version": "v0.7.2 (a85368c0)"
  }
}

POST

arc_getVersion

curl --request POST \
  --url https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "arc_getVersion",
  "params": []
}
'

import requests

url = "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/"

payload = {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "arc_getVersion",
    "params": []
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({id: 1, jsonrpc: '2.0', method: 'arc_getVersion', params: []})
};

fetch('https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'id' => 1,
    'jsonrpc' => '2.0',
    'method' => 'arc_getVersion',
    'params' => [
        
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/"

	payload := strings.NewReader("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"arc_getVersion\",\n  \"params\": []\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"arc_getVersion\",\n  \"params\": []\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://arc-testnet.core.chainstack.com/6caa7fd90475ac9214f7521dd460fa7c/")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"arc_getVersion\",\n  \"params\": []\n}"

response = http.request(request)
puts response.read_body

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "git_version": "v0.7.2",
    "git_commit": "a85368c0b0a7924e4c74035d195f96deb0291622",
    "git_short_hash": "a85368c0",
    "cargo_version": "v0.7.2 (a85368c0)"
  }
}

Arc API method that returns the build information for the node’s execution layer. Use it to confirm which arc-node release a node is running, for example when a fix or a new method landed in a specific version. arc_getVersion belongs to the custom arc_* namespace, which Arc adds on top of the standard Reth surface.

rpc_modules does not list arc in its response, because the namespace is registered outside the standard module registry. The method works regardless — do not use rpc_modules to decide whether it is available.

Parameters

None.

Response

git_version — the git tag of the release, or a short commit hash for untagged builds.
git_commit — the full git commit hash the binary was built from.
git_short_hash — the abbreviated commit hash.
cargo_version — the cargo package version, with the short commit appended.

`arc_getVersion` code examples

const { JsonRpcProvider } = require("ethers");

const provider = new JsonRpcProvider("CHAINSTACK_NODE_URL");

async function call() {
  const result = await provider.send("arc_getVersion", []);
  console.log(result);
}

call();

from web3 import Web3

node_url = "CHAINSTACK_NODE_URL"
web3 = Web3(Web3.HTTPProvider(node_url))

result = web3.provider.make_request("arc_getVersion", [])
print(result)

curl -X POST "CHAINSTACK_NODE_URL" \
  -H "Content-Type: application/json" \
  --data '{
    "jsonrpc": "2.0",
    "method": "arc_getVersion",
    "params": [],
    "id": 1
  }'

Use case

Arc is young and moving quickly, so behaviour can differ between releases. When a method returns something unexpected, arc_getVersion tells you which build you are talking to before you start bisecting your own code.

Body

application/json

integer

default:1

jsonrpc

string

default:2.0

method

string

default:arc_getVersion

params

array

Response

200 - application/json

Returns the result of arc_getVersion.

jsonrpc

string

integer

result

object

Show child attributes

Last modified on August 3, 2026

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arc_getVersion | Arc

Parameters

Response

`arc_getVersion` code examples

Use case

Body

Response

​Parameters

​Response

​arc_getVersion code examples

​Use case

Body

Response

Parameters

Response

`arc_getVersion` code examples

Use case