eth_syncing | Monad - Chainstack

eth_syncing

curl --request POST \
  --url https://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "eth_syncing",
  "params": []
}
'

import requests

url = "https://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/"

payload = {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "eth_syncing",
    "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: 'eth_syncing', params: []})
};

fetch('https://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/', 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://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/",
  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' => 'eth_syncing',
    '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://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/"

	payload := strings.NewReader("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_syncing\",\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://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_syncing\",\n  \"params\": []\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/")

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\": \"eth_syncing\",\n  \"params\": []\n}"

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

{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<unknown>"
}

POST

eth_syncing

curl --request POST \
  --url https://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "eth_syncing",
  "params": []
}
'

import requests

url = "https://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/"

payload = {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "eth_syncing",
    "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: 'eth_syncing', params: []})
};

fetch('https://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/', 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://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/",
  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' => 'eth_syncing',
    '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://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/"

	payload := strings.NewReader("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_syncing\",\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://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_syncing\",\n  \"params\": []\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/")

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\": \"eth_syncing\",\n  \"params\": []\n}"

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

{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<unknown>"
}

Monad API method that returns an object with data about the sync status or false if the node is fully synced. This method is useful for monitoring the synchronization progress of your node.

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Parameters

none

Response

result — returns false if the node is not syncing, or an object with sync status data:
- startingBlock — the block at which the import started
- currentBlock — the current block being processed
- highestBlock — the estimated highest block

`eth_syncing` code examples

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

const provider = new ethers.JsonRpcProvider("CHAINSTACK_NODE_URL");

async function checkSyncStatus() {
  const syncStatus = await provider.send("eth_syncing", []);
  if (syncStatus === false) {
    console.log("Node is fully synced");
  } else {
    console.log(`Syncing: ${parseInt(syncStatus.currentBlock, 16)} / ${parseInt(syncStatus.highestBlock, 16)}`);
  }
}

checkSyncStatus();

from web3 import Web3

node_url = "CHAINSTACK_NODE_URL"

web3 = Web3(Web3.HTTPProvider(node_url))
sync_status = web3.eth.syncing

if sync_status is False:
    print('Node is fully synced')
else:
    print(f'Syncing: {sync_status.currentBlock} / {sync_status.highestBlock}')

Use case

A practical use case for eth_syncing is implementing health checks in your application to ensure the node is fully synced before processing transactions or queries that require the latest chain state.

Body

application/json

integer

default:1

jsonrpc

string

default:2.0

method

string

default:eth_syncing

params

array

Response

200 - application/json

Syncing status or false if not syncing.

jsonrpc

string

integer

result

any

Last modified on June 22, 2026

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Chainstack platform API

eth_syncing | Monad

Parameters

Response

`eth_syncing` code examples

Use case

Body

Response

​Parameters

​Response

​eth_syncing code examples

​Use case

Body

Response

Parameters

Response

`eth_syncing` code examples

Use case