eth_syncing - Mantle

Example code for the eth_syncing JSON-RPC method. Complete guide on how to use eth_syncing JSON-RPC in GetBlock Web3 documentation.

This method returns an object with data about the sync status or false if the Mantle node is fully synced.

Parameters

• None

Request

cURL

curl

curl --location --request POST 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_syncing",
    "params": [],
    "id": "getblock.io"
}'

JavaScript (axios)

eth_syncing.js

import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_syncing",
    "params": [],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data)))
    .catch(error => console.log(error));

Python (requests)

eth_syncing.py

import requests
import json

url = "https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "eth_syncing",
    "params": [],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

Rust (reqwest)

eth_syncing.rs

use reqwest::header;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = reqwest::Client::new();
    
    let response = client
        .post("https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/")
        .header(header::CONTENT_TYPE, "application/json")
        .body(r#"{
            "jsonrpc": "2.0",
            "method": "eth_syncing",
            "params": [],
            "id": "getblock.io"
        }"#)
        .send()
        .await?;
    
    println!("{}", response.text().await?);
    Ok(())
}

Response

Not Syncing

response-not-syncing.json

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": false
}

Syncing

response-syncing.json

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": {
        "startingBlock": "0x384",
        "currentBlock": "0x386",
        "highestBlock": "0x454"
    }
}

Response Parameters

Field	Type	Description
result	boolean/object	false if synced, or sync status object
startingBlock	string	Block at which sync started
currentBlock	string	Current block being synced
highestBlock	string	Highest known block

Use Case

The eth_syncing method is essential for:

• Node health monitoring

• Sync progress tracking

• Application readiness checks

• Infrastructure monitoring

• Data reliability verification

• Node deployment validation

Error Handling

Status Code	Error Message	Cause
403	Forbidden	Missing or invalid ACCESS-TOKEN

Web3 Integration

Ethers.js

ethers.eth_syncing.js

import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/');

const syncing = await provider.send('eth_syncing', []);
console.log('Syncing:', syncing);

Viem

viem.eth_syncing.js

import { createPublicClient, http } from 'viem';
import { mantle } from 'viem/chains';

const client = createPublicClient({
    chain: mantle,
    transport: http('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/')
});

const syncing = await client.request({
    method: 'eth_syncing',
    params: []
});
console.log('Syncing:', syncing);