sui_getLatestCheckpointSequenceNumber - 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.

Parameters

None

Returns

Field

Type

Description

result

string

The latest checkpoint sequence number

Request Example

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": []
}'

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));

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())

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

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);

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(())
}

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