sui_getLatestCheckpointSequenceNumber{deprecated} - Sui

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

This method returns the sequence number of the latest checkpoint that has been executed on the SUI network. This provides a quick way to determine the current height of the blockchain without fetching full checkpoint data. It's useful for monitoring network progress and synchronization status.

This method is deprecated

Parameters

• None

Returns

Field	Type	Description
result	string	The latest checkpoint sequence number

Request Example

cURL

curl -X POST https://go.getblock.io/<ACCESS-TOKEN>/ \
-H "Content-Type: application/json" \
-d '{
  "jsonrpc": "2.0",
  "id": "getblock.io",
  "method": "sui_getLatestCheckpointSequenceNumber",
  "params": []
}'

JavaScript (Axios)

const axios = require('axios');

const url = 'https://go.getblock.io/<ACCESS-TOKEN>/';

const payload = {
  jsonrpc: '2.0',
  id: 'getblock.io',
  method: 'sui_getLatestCheckpointSequenceNumber',
  params: []
};

axios.post(url, payload, {
  headers: { 'Content-Type': 'application/json' }
})
.then(response => console.log(response.data))
.catch(error => console.error(error));

Python

import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = {
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "method": "sui_getLatestCheckpointSequenceNumber",
    "params": []
}

response = requests.post(url, headers={"Content-Type": "application/json"}, json=payload)
print(response.json())

Rust

use reqwest::Client;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();
    
    let payload = json!({
        "jsonrpc": "2.0",
        "id": "getblock.io",
        "method": "sui_getLatestCheckpointSequenceNumber",
        "params": []
    });

    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);
    
    Ok(())
}

Response Example

{
  "jsonrpc": "2.0",
  "result": "507021",
  "id": "getblock.io"
}

Response Parameters

Parameter	Type	Description
result	string	Latest checkpoint sequence number as a string

Use Cases

• Monitor blockchain height and progress

• Check node synchronization status

• Implement polling for new checkpoints

• Calculate finality depth for transactions

• Display network status in dashboards

Error Handling

Error Code	Description
-32603	Internal error - node processing issues
-32000	Server error - RPC endpoint unavailable

SDK Integration

Sui TypeScript SDK

import { SuiClient } from '@mysten/sui/client';

const client = new SuiClient({ url: 'https://go.getblock.io/<ACCESS-TOKEN>/' });

const latestCheckpoint = await client.getLatestCheckpointSequenceNumber();

console.log(latestCheckpoint);

Sui Rust SDK

use sui_sdk::SuiClientBuilder;

#[tokio::main]
async fn main() -> Result<(), anyhow::Error> {
    let sui = SuiClientBuilder::default()
        .build("https://go.getblock.io/<ACCESS-TOKEN>/")
        .await?;
    
    let seq = sui.read_api().get_latest_checkpoint_sequence_number().await?;
    
    println!("{}", seq);
    Ok(())
}