Wrapped SOL

spl-token wrap 1.5
spl-token unwrap <WSOL_TOKEN_ACCOUNT>

use anchor_lang::system_program;
use anchor_spl::token::{self, sync_native, TokenAccount};
 
// Deposit lamports into WSOL ATA, then sync_native

solana balance
spl-token address --token So11111111111111111111111111111111111111112
spl-token wrap 0.5
spl-token balance So11111111111111111111111111111111111111112
spl-token unwrap <WSOL_ATA_ADDRESS>
solana balance

use anchor_lang::prelude::*;
use anchor_spl::token::{self, Token, TokenAccount, SyncNative};
 
pub const WSOL_MINT: Pubkey = anchor_spl::token::spl_token::native_mint::ID;
 
#[derive(Accounts)]
pub struct WrapSol<'info> {
    #[account(mut)]
    pub payer: Signer<'info>,
    #[account(
        mut,
        constraint = wsol_ata.mint == WSOL_MINT @ ErrorCode::NotWsol,
    )]
    pub wsol_ata: Account<'info, TokenAccount>,
    pub token_program: Program<'info, Token>,
    pub system_program: Program<'info, System>,
}
 
pub fn wrap_sol(ctx: Context<WrapSol>, lamports: u64) -> Result<()> {
    system_program::transfer(
        CpiContext::new(
            ctx.accounts.system_program.to_account_info(),
            system_program::Transfer {
                from: ctx.accounts.payer.to_account_info(),
                to: ctx.accounts.wsol_ata.to_account_info(),
            },
        ),
        lamports,
    )?;
    token::sync_native(CpiContext::new(
        ctx.accounts.token_program.to_account_info(),
        SyncNative {
            account: ctx.accounts.wsol_ata.to_account_info(),
        },
    ))?;
    Ok(())
}
 
#[error_code]
pub enum ErrorCode {
    NotWsol,
}

import { createSolanaRpc, address } from "@solana/kit";
 
const WSOL_MINT = address("So11111111111111111111111111111111111111112");
const rpc = createSolanaRpc("https://api.devnet.solana.com");
 
// Many DEX SDKs auto-wrap SOL; manual flows use syncNative instruction after lamport transfer

// Close WSOL account to unwrap - returns lamports to destination
use anchor_spl::token::CloseAccount;
// Ensure amount is 0 or use withdraw pattern per your SDK