Raydium new pool listener

index.ts

import { LiquidityPoolKeysV4, MARKET_STATE_LAYOUT_V3, Market, TOKEN_PROGRAM_ID } from "@raydium-io/raydium-sdk";
import { Connection, Logs, ParsedInnerInstruction, ParsedInstruction, ParsedTransactionWithMeta, PartiallyDecodedInstruction, PublicKey } from "@solana/web3.js";

const RPC_ENDPOINT = 'https://api.mainnet-beta.solana.com';
const RAYDIUM_POOL_V4_PROGRAM_ID = '675kPX9MHTjS2zt1qfr1NYHuzeLXfQM9H24wFSUt1Mp8';
const SERUM_OPENBOOK_PROGRAM_ID = 'srmqPvymJeFKQ4zGQed1GFppgkRHL9kaELCbyksJtPX';
const SOL_MINT = 'So11111111111111111111111111111111111111112';
const SOL_DECIMALS = 9;

const connection = new Connection(RPC_ENDPOINT);
const seenTransactions : Array<string> = []; // The log listener is sometimes triggered multiple times for a single transaction, don't react to tranasctions we've already seen

subscribeToNewRaydiumPools();


function subscribeToNewRaydiumPools() : void
{
    connection.onLogs(new PublicKey(RAYDIUM_POOL_V4_PROGRAM_ID), async (txLogs: Logs) => {
        if (seenTransactions.includes(txLogs.signature)) {
            return;
        }
        seenTransactions.push(txLogs.signature);
        if (!findLogEntry('init_pc_amount', txLogs.logs)) {
            return; // If "init_pc_amount" is not in log entries then it's not LP initialization transaction
        }
        const poolKeys = await fetchPoolKeysForLPInitTransactionHash(txLogs.signature); // With poolKeys you can do a swap
        console.log(poolKeys);
    });
    console.log('Listening to new pools...');
}

function findLogEntry(needle: string, logEntries: Array<string>) : string|null
{
    for (let i = 0; i < logEntries.length; ++i) {
        if (logEntries[i].includes(needle)) {
            return logEntries[i];
        }
    }

    return null;
}

async function fetchPoolKeysForLPInitTransactionHash(txSignature: string) : Promise<LiquidityPoolKeysV4>
{
    const tx = await connection.getParsedTransaction(txSignature, {maxSupportedTransactionVersion: 0});
    if (!tx) {
        throw new Error('Failed to fetch transaction with signature ' + txSignature);
    }
    const poolInfo = parsePoolInfoFromLpTransaction(tx);
    const marketInfo = await fetchMarketInfo(poolInfo.marketId);

    return {
        id: poolInfo.id,
        baseMint: poolInfo.baseMint,
        quoteMint: poolInfo.quoteMint,
        lpMint: poolInfo.lpMint,
        baseDecimals: poolInfo.baseDecimals,
        quoteDecimals: poolInfo.quoteDecimals,
        lpDecimals: poolInfo.lpDecimals,
        version: 4,
        programId: poolInfo.programId,
        authority: poolInfo.authority,
        openOrders: poolInfo.openOrders,
        targetOrders: poolInfo.targetOrders,
        baseVault: poolInfo.baseVault,
        quoteVault: poolInfo.quoteVault,
        withdrawQueue: poolInfo.withdrawQueue,
        lpVault: poolInfo.lpVault,
        marketVersion: 3,
        marketProgramId: poolInfo.marketProgramId,
        marketId: poolInfo.marketId,
        marketAuthority: Market.getAssociatedAuthority({programId: poolInfo.marketProgramId, marketId: poolInfo.marketId}).publicKey,
        marketBaseVault: marketInfo.baseVault,
        marketQuoteVault: marketInfo.quoteVault,
        marketBids: marketInfo.bids,
        marketAsks: marketInfo.asks,
        marketEventQueue: marketInfo.eventQueue,
    } as LiquidityPoolKeysV4;
}

async function fetchMarketInfo(marketId: PublicKey) {
    const marketAccountInfo = await connection.getAccountInfo(marketId);
    if (!marketAccountInfo) {
        throw new Error('Failed to fetch market info for market id ' + marketId.toBase58());
    }
    
    return MARKET_STATE_LAYOUT_V3.decode(marketAccountInfo.data);
}


function parsePoolInfoFromLpTransaction(txData: ParsedTransactionWithMeta) 
{
    const initInstruction = findInstructionByProgramId(txData.transaction.message.instructions, new PublicKey(RAYDIUM_POOL_V4_PROGRAM_ID)) as PartiallyDecodedInstruction|null;
    if (!initInstruction) {
        throw new Error('Failed to find lp init instruction in lp init tx');
    }
    const baseMint = initInstruction.accounts[8];
    const baseVault = initInstruction.accounts[10]; 
    const quoteMint = initInstruction.accounts[9];
    const quoteVault = initInstruction.accounts[11];
    const lpMint = initInstruction.accounts[7];
    const baseAndQuoteSwapped = baseMint.toBase58() === SOL_MINT;
    const lpMintInitInstruction = findInitializeMintInInnerInstructionsByMintAddress(txData.meta?.innerInstructions ?? [], lpMint);
    if (!lpMintInitInstruction) {
        throw new Error('Failed to find lp mint init instruction in lp init tx');
    }
    const lpMintInstruction = findMintToInInnerInstructionsByMintAddress(txData.meta?.innerInstructions ?? [], lpMint);
    if (!lpMintInstruction) {
        throw new Error('Failed to find lp mint to instruction in lp init tx');
    }
    const baseTransferInstruction = findTransferInstructionInInnerInstructionsByDestination(txData.meta?.innerInstructions ?? [], baseVault, TOKEN_PROGRAM_ID);
    if (!baseTransferInstruction) {
        throw new Error('Failed to find base transfer instruction in lp init tx');
    }
    const quoteTransferInstruction = findTransferInstructionInInnerInstructionsByDestination(txData.meta?.innerInstructions ?? [], quoteVault, TOKEN_PROGRAM_ID);
    if (!quoteTransferInstruction) {
        throw new Error('Failed to find quote transfer instruction in lp init tx');
    }
    const lpDecimals = lpMintInitInstruction.parsed.info.decimals;
    const lpInitializationLogEntryInfo = extractLPInitializationLogEntryInfoFromLogEntry(findLogEntry('init_pc_amount', txData.meta?.logMessages ?? []) ?? '');
    const basePreBalance = (txData.meta?.preTokenBalances ?? []).find(balance => balance.mint === baseMint.toBase58());
    if (!basePreBalance) {
        throw new Error('Failed to find base tokens preTokenBalance entry to parse the base tokens decimals');
    }
    const baseDecimals = basePreBalance.uiTokenAmount.decimals;

    return {
        id: initInstruction.accounts[4],
        baseMint,
        quoteMint,
        lpMint,
        baseDecimals: baseAndQuoteSwapped ? SOL_DECIMALS : baseDecimals,
        quoteDecimals: baseAndQuoteSwapped ? baseDecimals : SOL_DECIMALS,
        lpDecimals,
        version: 4,
        programId: new PublicKey(RAYDIUM_POOL_V4_PROGRAM_ID),
        authority: initInstruction.accounts[5],
        openOrders: initInstruction.accounts[6],
        targetOrders: initInstruction.accounts[13],
        baseVault,
        quoteVault,
        withdrawQueue: new PublicKey("11111111111111111111111111111111"),
        lpVault: new PublicKey(lpMintInstruction.parsed.info.account),
        marketVersion: 3,
        marketProgramId: initInstruction.accounts[15],
        marketId: initInstruction.accounts[16],
        baseReserve: parseInt(baseTransferInstruction.parsed.info.amount),
        quoteReserve: parseInt(quoteTransferInstruction.parsed.info.amount),
        lpReserve: parseInt(lpMintInstruction.parsed.info.amount),
        openTime: lpInitializationLogEntryInfo.open_time,
    }
}

function findTransferInstructionInInnerInstructionsByDestination(innerInstructions: Array<ParsedInnerInstruction>, destinationAccount : PublicKey, programId?: PublicKey) : ParsedInstruction|null
{
    for (let i = 0; i < innerInstructions.length; i++) {
        for (let y = 0; y < innerInstructions[i].instructions.length; y++) {
            const instruction = innerInstructions[i].instructions[y] as ParsedInstruction;
            if (!instruction.parsed) {continue};
            if (instruction.parsed.type === 'transfer' && instruction.parsed.info.destination === destinationAccount.toBase58() && (!programId || instruction.programId.equals(programId))) {
                return instruction;
            }
        }
    }

    return null;
}

function findInitializeMintInInnerInstructionsByMintAddress(innerInstructions: Array<ParsedInnerInstruction>, mintAddress: PublicKey) : ParsedInstruction|null
{
    for (let i = 0; i < innerInstructions.length; i++) {
        for (let y = 0; y < innerInstructions[i].instructions.length; y++) {
            const instruction = innerInstructions[i].instructions[y] as ParsedInstruction;
            if (!instruction.parsed) {continue};
            if (instruction.parsed.type === 'initializeMint' && instruction.parsed.info.mint === mintAddress.toBase58()) {
                return instruction;
            }
        }
    }

    return null;
}

function findMintToInInnerInstructionsByMintAddress(innerInstructions: Array<ParsedInnerInstruction>, mintAddress: PublicKey) : ParsedInstruction|null
{
    for (let i = 0; i < innerInstructions.length; i++) {
        for (let y = 0; y < innerInstructions[i].instructions.length; y++) {
            const instruction = innerInstructions[i].instructions[y] as ParsedInstruction;
            if (!instruction.parsed) {continue};
            if (instruction.parsed.type === 'mintTo' && instruction.parsed.info.mint === mintAddress.toBase58()) {
                return instruction;
            }
        }
    }

    return null;
}

function findInstructionByProgramId(instructions: Array<ParsedInstruction|PartiallyDecodedInstruction>, programId: PublicKey) : ParsedInstruction|PartiallyDecodedInstruction|null
{
    for (let i = 0; i < instructions.length; i++) {
        if (instructions[i].programId.equals(programId)) {
            return instructions[i];
        }
    }

    return null;
}

function extractLPInitializationLogEntryInfoFromLogEntry(lpLogEntry: string) : {nonce: number, open_time: number, init_pc_amount: number, init_coin_amount: number} {
    const lpInitializationLogEntryInfoStart = lpLogEntry.indexOf('{');

    return JSON.parse(fixRelaxedJsonInLpLogEntry(lpLogEntry.substring(lpInitializationLogEntryInfoStart)));
}

function fixRelaxedJsonInLpLogEntry(relaxedJson: string) : string
{
    return relaxedJson.replace(/([{,])\s*([a-zA-Z_][a-zA-Z0-9_]*)\s*:/g, "$1\"$2\":");
}

Hi all, Hope someone can help me swap without pool key or pool information. I accept the swap failure, and swap continuously until LP is added.

@endrsmar Hi Martin, thanks for your sharing the script. I am trying to find out the Liquidity of the new created LP? Can you give me some instructions to find it out?

Thank you so much!

@endrsmar Hi Martin, thanks for your sharing the script. I am trying to find out the Liquidity of the new created LP? Can you give me some instructions to find it out?

Thank you so much!

any info to find out the liquidity and price for new release token? @endrsmar