getBalance - Solana

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

This method returns the lamport balance of an account. Balances are reported in lamports, where 1 SOL equals 1,000,000,000 lamports.

Parameters

Parameter	Type	Required	Description
pubkey	string	Yes	Base58-encoded Pubkey of the account to query
config	object	No	Configuration object controlling commitment

Config Object

Field	Type	Required	Description
commitment	string	No	Commitment level: processed, confirmed, or finalized. Defaults to finalized
minContextSlot	number	No	Minimum slot the request can be evaluated at

Request

cURL

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "getBalance",
    "params": ["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v", {"commitment": "finalized"}],
    "id": "getblock.io"
}'

@solana/web3.js

example.js

const { Connection, PublicKey, LAMPORTS_PER_SOL } = require('@solana/web3.js');

const connection = new Connection('https://go.getblock.io/<ACCESS-TOKEN>/', 'finalized');

const lamports = await connection.getBalance(
  new PublicKey('EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v')
);

console.log(lamports / LAMPORTS_PER_SOL, 'SOL');

Request

example.py

import requests

response = requests.post(
    'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers={'Content-Type': 'application/json'},
    json={
        'jsonrpc': '2.0',
        'method': 'getBalance',
        'params': ["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v", {"commitment": "finalized"}],
        'id': 'getblock.io'
    }
)

print(response.json()['result'])

Rust

example.rs

use reqwest::Client;
use serde_json::{json, Value};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();

    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&json!({
            "jsonrpc": "2.0",
            "method": "getBalance",
            "params": ["EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v", {"commitment": "finalized"}],
            "id": "getblock.io"
        }))
        .send()
        .await?
        .json::<Value>()
        .await?;

    println!("Result: {}", response["result"]);
    Ok(())
}

Response

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": {
        "context": {
            "apiVersion": "2.3.6",
            "slot": 397234561
        },
        "value": 389532986339
    }
}

Response Parameters

Parameter	Type	Description
jsonrpc	string	JSON-RPC protocol version ("2.0")
id	string	Request identifier matching the request
result	object	RPC response object where value is the balance in lamports

Use Cases

• Wallet Balances: Display SOL balances in wallet and portfolio interfaces

• Fee Preflight: Confirm a fee payer holds enough lamports before signing

• Rent Checks: Compare a balance against the rent-exempt minimum

• Faucet Automation: Trigger a devnet airdrop when a test account runs dry

• Treasury Monitoring: Poll protocol treasury accounts for balance changes

Error Handling

Error Code	Message	Description
-32602	Invalid params	Malformed base58 Pubkey, unsupported encoding, or invalid dataSlice range
-32603	Internal error	Node failed to read the account from its accounts database
-32016	Minimum context slot has not been reached	The node has not yet processed minContextSlot
-32005	Node is unhealthy	The node has fallen behind the cluster tip and cannot serve account state