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Install Dependencies

  • npm
  • yarn
  • pnpm
npm install @lightprotocol/stateless.js@0.22.1-alpha.1
npm install @lightprotocol/compressed-token
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Create an RPC connection

Run test-connection.ts to verify your setup:
Replace <api_key> with your actual API key before running! Get one here, if you don’t have one yet.
test-connection.ts
import { createRpc } from "@lightprotocol/stateless.js";

// Helius exposes Solana and Photon RPC endpoints through a single URL
<strong>const RPC_ENDPOINT = "https://devnet.helius-rpc.com?api-key=&#x3C;api_key>";
</strong>const connection = createRpc(RPC_ENDPOINT, RPC_ENDPOINT, RPC_ENDPOINT);

console.log("Connection created");
console.log("RPC Endpoint:", RPC_ENDPOINT);
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Create and Mint Compressed Tokens

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Install Solana
sh -c "$(curl -sSfL https://release.anza.xyz/v3.0.0/install)"
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Then run the command below to create a keypair at .config/solana/id.json
solana-keygen new
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Fund wallet with devnet SOL
# Check current balance
solana balance --url devnet

# Airdrop 1 SOL to your default wallet
solana airdrop 1 --url devnet

# or use https://faucet.solana.com/
Run quickstart.ts with the following code:
quickstart.ts
// ZK Compression Quickstart - DevNet
// 1. Load wallet and connect to DevNet via Helius RPC
// 2. Create SPL mint with token pool for compression via createMint()
// 3. Mint compressed tokens to recipient account via mintTo()
// 4. Verify compressed token balance via getCompressedTokenAccountsByOwner

import { createRpc } from "@lightprotocol/stateless.js";
import { createMint, mintTo } from "@lightprotocol/compressed-token";
import { Keypair } from "@solana/web3.js";
import { readFileSync } from "fs";
import { homedir } from "os";

// Step 1: Load wallet from filesystem
const payer = Keypair.fromSecretKey(new Uint8Array(JSON.parse(readFileSync(`${homedir()}/.config/solana/id.json`, "utf8"))));

// Helius exposes Solana and compression RPC endpoints through a single URL
const RPC_ENDPOINT = "https://devnet.helius-rpc.com?api-key=<API_KEY>";
const connection = createRpc(RPC_ENDPOINT, RPC_ENDPOINT, RPC_ENDPOINT);

const main = async () => {

  try {
    // Step 2: Create SPL mint with token pool for compression
    console.log("\nCreating SPL mint with token pool for compression");
    const { mint, transactionSignature } = await createMint(
      connection,
      payer,
      payer.publicKey, // mintAuthority
      9
    );

    console.log(`Mint address: ${mint.toBase58()}`);
    console.log(`Create mint transaction: https://explorer.solana.com/tx/${transactionSignature}?cluster=devnet`);

    // Step 3: Mint compressed tokens to recipient account
    console.log("\nMinting compressed token...");
    const mintAmount = 1000000000; // mintAmount with decimals
    const mintToTxId = await mintTo(
      connection,
      payer,
      mint, // SPL mint with token pool for compression
      payer.publicKey, // recipient.publicKey
      payer, // mintAuthority
      mintAmount
    );

    console.log(`Compressed Token minted ${mintAmount / 1e9} token`);
    console.log(`Transaction: https://explorer.solana.com/tx/${mintToTxId}?cluster=devnet`);

    // Step 4: Verify compressed token balance via getCompressedTokenAccountsByOwner
    const tokenAccounts = await connection.getCompressedTokenAccountsByOwner(
      payer.publicKey,
      { mint } // SPL mint with token pool for compression
    );

  } catch (error: any) {
    console.error("Error:", error.message);
  }
};

main().catch(console.error);
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That’s it!

You’ve created and minted compressed tokens. The output shows:
  • Mint address
  • Create mint transaction link
  • Minted token amount
  • Mint transaction link
  • Compressed token balance

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Next Steps

Learn more about compressed tokens.