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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": []
}
'
{
  "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();

​
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
​
id
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
​
id
integer
​
result
any
Last modified on May 18, 2026