Legacy AMM v4 Pool creation on Raydium on Devnet programmatically

[blackwidoq]

I am trying to learn how to launch a legacy AMMv4 pool on Raydium on Devnet

I was able to create an OpenBook market with the output in the terminal as follows:

 Success! You just created an OpenBook market on devnet!
You're now ready to create the Raydium AMM pool linked to that market.


✅   Got Market ID: Gj9i13ggMzKpZ6TDkbpgK3ZWNab3ZVtEzxyHapgJMV1A

I proceeded to try creating a legacy AMMv4 pool by running the following code (for learning purposes, I wanted it to be AMMv4.)

// Create a Raydium Legacy AMM v4 pool on Devnet
// Requirements: node.js, npm install dotenv @raydium-io/raydium-sdk-v2 @solana/web3.js @solana/spl-token

import { config } from 'dotenv';
config();

import {
  Connection,
  Keypair,
  PublicKey,
  sendAndConfirmTransaction,
  Transaction,
} from '@solana/web3.js';

import {
  getAssociatedTokenAddressSync,
  createAssociatedTokenAccountInstruction,
} from '@solana/spl-token';

import {
  TxVersion,
  DEVNET_PROGRAM_ID,
  makeCreatePoolV4InstructionV2
} from '@raydium-io/raydium-sdk-v2';

const RPC_URL = 'https://api.devnet.solana.com';
const connection = new Connection(RPC_URL, 'confirmed');

const WALLET = Keypair.fromSecretKey(
  Uint8Array.from(JSON.parse(process.env.PRIVATE_KEY))
);

const BASE_MINT = new PublicKey('5QRutHk9sPSkwbrFQHmgY8ETy49RDe1HpaXwj1zMDaRK'); // GIGACHAD
const QUOTE_MINT = new PublicKey('So11111111111111111111111111111111111111112'); // wSOL
const OPENBOOK_MARKET = new PublicKey('Gj9i13ggMzKpZ6TDkbpgK3ZWNab3ZVtEzxyHapgJMV1A');

const BASE_AMOUNT = 6042069100;
const QUOTE_AMOUNT = 1_000_000_000; // 1 wSOL

async function main() {
  const ownerBaseATA = getAssociatedTokenAddressSync(BASE_MINT, WALLET.publicKey);
  const ownerQuoteATA = getAssociatedTokenAddressSync(QUOTE_MINT, WALLET.publicKey);

  const ixInitBaseATA = await connection.getAccountInfo(ownerBaseATA)
    ? []
    : [createAssociatedTokenAccountInstruction(WALLET.publicKey, ownerBaseATA, WALLET.publicKey, BASE_MINT)];

  const ixInitQuoteATA = await connection.getAccountInfo(ownerQuoteATA)
    ? []
    : [createAssociatedTokenAccountInstruction(WALLET.publicKey, ownerQuoteATA, WALLET.publicKey, QUOTE_MINT)];

  const result = await makeCreatePoolV4InstructionV2({
    connection,
    programId: DEVNET_PROGRAM_ID.AmmV4,
    marketId: OPENBOOK_MARKET,
    baseMint: BASE_MINT,
    quoteMint: QUOTE_MINT,
    baseAmount: BASE_AMOUNT,
    quoteAmount: QUOTE_AMOUNT,
    ownerInfo: {
      feePayer: WALLET.publicKey,
      wallet: WALLET.publicKey,
      tokenAccounts: [ownerBaseATA, ownerQuoteATA],
    },
    makeTxVersion: TxVersion.V0,
  });

  if (!result || !Array.isArray(result.innerTransactions)) {
    throw new Error('Raydium SDK did not return valid innerTransactions');
  }

  for (const iTx of result.innerTransactions) {
    const tx = new Transaction().add(...iTx.instructions);
    tx.feePayer = WALLET.publicKey;
    tx.recentBlockhash = (await connection.getLatestBlockhash()).blockhash;
    const txid = await sendAndConfirmTransaction(connection, tx, [WALLET, ...iTx.signers]);
    console.log('Confirmed tx:', txid);
  }

  console.log('✅ Legacy AMM v4 Pool created');
}

main().catch((err) => {
  console.error('❌ Pool creation failed:', err);
});

Looking at search results for AMMv4 through the github repo, I am really confused if it's doable anymore. Does raydium-sdk no longer support this?

I was looking for a demo for creating a legacy AMMv4 liquidity pool but couldn't find one.

Could someone point me in the right direction?