PumpSwap Liquidity Management

PumpSwap Liquidity Management scripts for creating pools, depositing liquidity, and withdrawing LP tokens on the PumpSwap AMM — the native decentralized exchange on Solana.

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What Is This?

PumpSwap is a constant-product AMM (x * y = k) deployed on Solana mainnet at program address pAMMBay6oceH9fJKBRHGP5D4bD4sWpmSwMn52FMfXEA. Tokens that complete their bonding curve on Pump.fun migrate directly into PumpSwap pools, where liquidity providers earn a share of the 0.25% trade fee (0.20% to LPs, 0.05% to the protocol).

This toolkit gives you a clean, environment-variable-driven interface to the three core liquidity operations on PumpSwap:

Script	What It Does
createPool.ts	Creates a new PumpSwap AMM pool with an initial base/quote deposit
addLiq.ts	Adds liquidity to an existing pool, minting proportional LP tokens
withdrawLiq.ts	Burns LP tokens and withdraws your share of base and quote reserves

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Prerequisites

• Node.js ≥ 18
• Yarn
• A funded Solana wallet (mainnet-beta) whose private key you can set in .env
• Access to a Solana RPC endpoint (default: https://api.mainnet-beta.solana.com)

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Quick Start

1. Clone & Install

git clone https://github.com/ElliteAnts/Pumpswap-Liquidity-Management-Script.git
cd Pumpswap-Liquidity-Management-Script
yarn

2. Configure Environment Variables

Copy the sample file and fill in your values:

cp .env.sample .env

Variable	Description	Example
SOLANA_RPC_URL	Solana RPC endpoint	https://api.mainnet-beta.solana.com
WALLET_SECRET_KEY	Base-58 private key of your wallet	Your_Wallet_Privatekey
BASE_MINT	Mint address of the base token	(your token mint)
QUOTE_MINT	Mint address of the quote token	(e.g. SOL wrapped mint)
BASE_DECIMALS	Decimal places of the base token	9
QUOTE_DECIMALS	Decimal places of the quote token	6
INITIAL_BASE	Initial base amount when creating a pool (UI units)	10
INITIAL_QUOTE	Initial quote amount when creating a pool (UI units)	0.001
ADD_LIQ_AMOUNT	Quote amount to add on deposit (UI units)	0.001
WITHDRAW_LP_AMOUNT	LP token amount to burn on withdrawal (UI units)	0.001
POOL_INDEX	Pool index for PDA derivation	0

Security note: Never commit your .env file. The .gitignore already excludes it.

3. Build

yarn run build

4. Run the Scripts

# Create a new PumpSwap pool
yarn run create

# Add liquidity to your pool
yarn run deposit

# Withdraw liquidity (burn LP tokens)
yarn run withdraw

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How PumpSwap Liquidity Works

Understanding the mechanics behind the scripts helps you tune parameters for your use case.

Pool creation derives a unique Pool PDA from ["pool", index, creator, base_mint, quote_mint]. The first deposit sets the pool's initial price ratio based on INITIAL_BASE and INITIAL_QUOTE.

Depositing liquidity mints LP tokens proportionally to your contribution relative to the current pool reserves. The SDK ensures your deposit maintains the existing ratio; any excess from the larger side is refunded.

Withdrawing liquidity burns LP tokens and returns a pro-rata share of both base and quote reserves:

base_out  = (lp_burned / lp_supply) × base_reserves
quote_out = (lp_burned / lp_supply) × quote_reserves

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Project Structure

├── src/
│   ├── createPool.ts        # Pool creation logic
│   ├── addLiq.ts            # Liquidity deposit logic
│   └── withdrawLiq.ts       # Liquidity withdrawal logic
├── .env.sample              # Environment variable template
├── package.json             # Dependencies & npm scripts
├── tsconfig.json            # TypeScript configuration
└── yarn.lock                # Locked dependency versions

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On-Chain Verification

All transactions below were executed against mainnet-beta and can be inspected on Solscan.

Action	Transaction / Account
Create Pool	CZe675tm…DCp5
Pool Key	BeFYKqP…FEMd1
Add Liquidity	2EhhZig…kf9Yi
Withdraw Liquidity	3UX1A7T…fR5Wj

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Contributing

Pull requests are welcome. Please open an issue first to discuss the change you'd like to make.

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Contact

Have a feature request or integration question? Reach out on Telegram.