Mint To creates new tokens of a mint and deposits them to a specified token account.
Before we can mint any tokens, we need an initialized mint account (SPL, Token 2022 or Light) for which we hold the mint authority.

TypeScript Client
Rust Client
Program

mintToInterface mints tokens to token accounts in a single call.The function auto-detects the token program (SPL, Token 2022, or Light) from the mint address.Compare to SPL:

Find the source code here.

Mint Tokens to Light Token Account

Installation

npm
yarn
pnpm

Install packages in your working directory:

npm install @lightprotocol/stateless.js@beta \
            @lightprotocol/compressed-token@beta

Install the CLI globally:

npm install -g @lightprotocol/zk-compression-cli@beta

Install packages in your working directory:

yarn add @lightprotocol/stateless.js@beta \
         @lightprotocol/compressed-token@beta

Install the CLI globally:

yarn global add @lightprotocol/zk-compression-cli@beta

Install packages in your working directory:

pnpm add @lightprotocol/stateless.js@beta \
         @lightprotocol/compressed-token@beta

Install the CLI globally:

pnpm add -g @lightprotocol/zk-compression-cli@beta

Localnet
Devnet

# start local test-validator in a separate terminal
light test-validator

In the code examples, use createRpc() without arguments for localnet.

Get an API key from Helius and add to .env:

.env

API_KEY=<your-helius-api-key>

In the code examples, use createRpc(RPC_URL) with the devnet URL.

Action
Instruction

import "dotenv/config";
import { Keypair } from "@solana/web3.js";
import { createRpc } from "@lightprotocol/stateless.js";
import {
    createMintInterface,
    createAtaInterface,
    mintToInterface,
    getAssociatedTokenAddressInterface,
} from "@lightprotocol/compressed-token";
import { homedir } from "os";
import { readFileSync } from "fs";

// devnet:
const RPC_URL = `https://devnet.helius-rpc.com?api-key=${process.env.API_KEY!}`;
const rpc = createRpc(RPC_URL);
// localnet:
// const rpc = createRpc();

const payer = Keypair.fromSecretKey(
    new Uint8Array(
        JSON.parse(readFileSync(`${homedir()}/.config/solana/id.json`, "utf8"))
    )
);

(async function () {
    const { mint } = await createMintInterface(rpc, payer, payer, null, 9);

    const recipient = Keypair.generate();
    await createAtaInterface(rpc, payer, mint, recipient.publicKey);

    const destination = getAssociatedTokenAddressInterface(mint, recipient.publicKey);
    const tx = await mintToInterface(rpc, payer, mint, destination, payer, 1_000_000_000);

    console.log("Tx:", tx);
})();

import "dotenv/config";
import {
    Keypair,
    ComputeBudgetProgram,
    Transaction,
    sendAndConfirmTransaction,
} from "@solana/web3.js";
import { createRpc, bn, DerivationMode } from "@lightprotocol/stateless.js";
import {
    createMintInterface,
    createAtaInterface,
    createMintToInterfaceInstruction,
    getMintInterface,
    getAssociatedTokenAddressInterface,
} from "@lightprotocol/compressed-token";
import { homedir } from "os";
import { readFileSync } from "fs";

// devnet:
// const RPC_URL = `https://devnet.helius-rpc.com?api-key=${process.env.API_KEY!}`;
// const rpc = createRpc(RPC_URL);
// localnet:
const rpc = createRpc();

const payer = Keypair.fromSecretKey(
    new Uint8Array(
        JSON.parse(readFileSync(`${homedir()}/.config/solana/id.json`, "utf8")),
    ),
);

(async function () {
    const { mint } = await createMintInterface(rpc, payer, payer, null, 9);

    const recipient = Keypair.generate();
    await createAtaInterface(rpc, payer, mint, recipient.publicKey);
    const destination = getAssociatedTokenAddressInterface(
        mint,
        recipient.publicKey,
    );

    const mintInterface = await getMintInterface(rpc, mint);

    let validityProof;
    if (mintInterface.merkleContext) {
        validityProof = await rpc.getValidityProofV2(
            [
                {
                    hash: bn(mintInterface.merkleContext.hash),
                    leafIndex: mintInterface.merkleContext.leafIndex,
                    treeInfo: mintInterface.merkleContext.treeInfo,
                    proveByIndex: mintInterface.merkleContext.proveByIndex,
                },
            ],
            [],
            DerivationMode.compressible,
        );
    }

    const ix = createMintToInterfaceInstruction(
        mintInterface,
        destination,
        payer.publicKey,
        payer.publicKey,
        1_000_000_000,
        validityProof,
    );

    const tx = new Transaction().add(
        ComputeBudgetProgram.setComputeUnitLimit({ units: 500_000 }),
        ix,
    );
    const signature = await sendAndConfirmTransaction(rpc, tx, [payer]);

    console.log("Tx:", signature);
})();

Use MintTo to mint tokens to a Light Token account.Compare to SPL:

Prerequisites

Dependencies

Cargo.toml

[dependencies]
light-token = "0.4.0"
light-client = { version = "0.19.0", features = ["v2"] }
solana-sdk = "2"
borsh = "0.10.4"
tokio = { version = "1", features = ["full"] }

Developer Environment

In-Memory (LightProgramTest)
Localnet (LightClient)
Devnet (LightClient)

Test with Lite-SVM (…)

# Initialize project
cargo init my-light-project
cd my-light-project

# Run tests
cargo test

use light_program_test::{LightProgramTest, ProgramTestConfig};
use solana_sdk::signer::Signer;

#[tokio::test]
async fn test_example() {
    // In-memory test environment 
    let mut rpc = LightProgramTest::new(ProgramTestConfig::default())
        .await
        .unwrap();

    let payer = rpc.get_payer().insecure_clone();
    println!("Payer: {}", payer.pubkey());
}

Connects to a local test validator.

npm
yarn
pnpm

npm install -g @lightprotocol/zk-compression-cli@beta

yarn global add @lightprotocol/zk-compression-cli@beta

pnpm add -g @lightprotocol/zk-compression-cli@beta

# Initialize project
cargo init my-light-project
cd my-light-project

# Start local test validator (in separate terminal)
light test-validator

use light_client::rpc::{LightClient, LightClientConfig, Rpc};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Connects to http://localhost:8899
    let rpc = LightClient::new(LightClientConfig::local()).await?;

    let slot = rpc.get_slot().await?;
    println!("Current slot: {}", slot);

    Ok(())
}

Replace <your-api-key> with your actual API key. Get your API key here.

use light_client::rpc::{LightClient, LightClientConfig, Rpc};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let rpc_url = "https://devnet.helius-rpc.com?api-key=<your_api_key>";
    let rpc = LightClient::new(
        LightClientConfig::new(rpc_url.to_string(), None, None)
    ).await?;

    println!("Connected to Devnet");
    Ok(())
}

Mint to Light Token Accounts

View the source code and full example with shared test utilities.

Action
Instruction

use borsh::BorshDeserialize;
use light_client::rpc::Rpc;
use light_token_client::actions::{CreateAta, CreateMint, MintTo};
use rust_client::setup_rpc_and_payer;
use solana_sdk::signer::Signer;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let (mut rpc, payer) = setup_rpc_and_payer().await;

    // Create mint (payer is also mint authority)
    let (_signature, mint) = CreateMint {
        decimals: 9,
        freeze_authority: None,
        token_metadata: None,
        seed: None,
    }
    .execute(&mut rpc, &payer, &payer)
    .await?;

    // Create associated token account
    let (_signature, associated_token_account) = CreateAta {
        mint,
        owner: payer.pubkey(),
        idempotent: true,
    }
    .execute(&mut rpc, &payer)
    .await?;

    // Mint tokens (payer is mint authority)
    let sig = MintTo {
        mint,
        destination: associated_token_account,
        amount: 1_000_000,
    }
    .execute(&mut rpc, &payer, &payer)
    .await?;

    let data = rpc.get_account(associated_token_account).await?.ok_or("Account not found")?;
    let token = light_token_interface::state::Token::deserialize(&mut &data.data[..])?;
    println!("Balance: {} Tx: {sig}", token.amount);

    Ok(())
}

use borsh::BorshDeserialize;
use light_client::rpc::Rpc;
use light_token::instruction::MintTo;
use rust_client::{setup_empty_associated_token_account, SetupContext};
use solana_sdk::signer::Signer;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Setup creates mint and empty associated token account
    let SetupContext {
        mut rpc,
        payer,
        mint,
        associated_token_account,
        ..
    } = setup_empty_associated_token_account().await;

    let mint_amount = 1_000_000_000u64;

    let mint_to_instruction = MintTo {
        mint,
        destination: associated_token_account,
        amount: mint_amount,
        authority: payer.pubkey(),
        max_top_up: None, 
        fee_payer: None,
    }
    .instruction()?;

    let sig = rpc
        .create_and_send_transaction(&[mint_to_instruction], &payer.pubkey(), &[&payer])
        .await?;

    let data = rpc.get_account(associated_token_account).await?.ok_or("Account not found")?;
    let token = light_token_interface::state::Token::deserialize(&mut &data.data[..])?;
    println!("Balance: {} Tx: {sig}", token.amount);

    Ok(())
}

Find a full code example at the end.

Build Account Infos and CPI the Light Token Program

Use invoke for external signers or invoke_signed when the authority is a PDA.

invoke (External signer)
invoke_signed (PDA authority)

use light_token::instruction::MintToCpi;

MintToCpi {
    mint: mint.clone(),
    destination: destination.clone(),
    amount,
    authority: authority.clone(),
    system_program: system_program.clone(),
    fee_payer: None,
    max_top_up: None,
}
.invoke()

use light_token::instruction::MintToCpi;

let signer_seeds: &[&[u8]] = &[MINT_AUTHORITY_SEED, &[bump]];

MintToCpi {
    mint: mint.clone(),
    destination: destination.clone(),
    amount,
    authority: authority.clone(),
    system_program: system_program.clone(),
    fee_payer: None,
    max_top_up: None,
}
.invoke_signed(&[signer_seeds])

fee_payer and max_top_up are optional fields to customize rent top-ups. Set to None to use defaults.

Full Code Example

View the source code and full example with shared test utilities.

#![allow(unexpected_cfgs, deprecated)]

use anchor_lang::prelude::*;
use light_token::instruction::MintToCpi;

declare_id!("8bXEVmHLtAVqDLJp1dYWAZ61WQmqQKoTQ8LpPbRoUDCp");

#[program]
pub mod light_token_anchor_mint_to {
    use super::*;

    pub fn mint_to(ctx: Context<MintToAccounts>, amount: u64) -> Result<()> {
        MintToCpi {
            mint: ctx.accounts.mint.to_account_info(),
            destination: ctx.accounts.destination.to_account_info(),
            amount,
            authority: ctx.accounts.authority.to_account_info(),
            system_program: ctx.accounts.system_program.to_account_info(),
            max_top_up: None,
            fee_payer: None,
        }
        .invoke()?;
        Ok(())
    }
}

#[derive(Accounts)]
pub struct MintToAccounts<'info> {
    /// CHECK: Light token program for CPI
    pub light_token_program: AccountInfo<'info>,
    /// CHECK: Validated by light-token CPI
    #[account(mut)]
    pub mint: AccountInfo<'info>,
    /// CHECK: Validated by light-token CPI
    #[account(mut)]
    pub destination: AccountInfo<'info>,
    pub authority: Signer<'info>,
    pub system_program: Program<'info, System>,
}

Get Started

DeFi

Toolkits

Cookbook

Learn

SDK Reference

Mint to Light Token Accounts

Mint Tokens to Light Token Account

Prerequisites

Mint to Light Token Accounts

Build Account Infos and CPI the Light Token Program

Full Code Example

Next Steps

Learn to use the transfer interface for Light Token <> SPL token transfers

Get Started

DeFi

Toolkits

Cookbook

Learn

SDK Reference

​Mint Tokens to Light Token Account

​Prerequisites

​Mint to Light Token Accounts

​Build Account Infos and CPI the Light Token Program

​Full Code Example

​Next Steps

Learn to use the transfer interface for Light Token <> SPL token transfers

Mint Tokens to Light Token Account

Prerequisites

Mint to Light Token Accounts

Build Account Infos and CPI the Light Token Program

Full Code Example

Next Steps