pump_swap_py

Python library to trade on Pump Swap (AMM).

pip install solana==0.36.1 solders==0.23.0

Updated: 9/2/2025

PumpSwap program (pAMMBay6oceH9fJKBRHGP5D4bD4sWpmSwMn52FMfXEA):

• Buy instruction: Add accounts at indexes 21 (fee_config) and 22 (fee_program)
• Sell instruction: Add accounts at indexes 19 (fee_config) and 20 (fee_program)

Contact

My Telegram: https://t.me/AL_THE_BOT_FATHER

Bot Mafia Telegram: https://t.me/Bot_Mafia_Support

Instructions

Clone the repo and use example_buy.py or example_sell.py.

If you can - please support my work and donate to: 3pPK76GL5ChVFBHND54UfBMtg36Bsh1mzbQPTbcK89PD

FAQS

What format should my private key be in?

The private key should be in the base58 string format, not bytes.

Why are my transactions being dropped?

You get what you pay for. Don't use the main-net RPC, just spend the money for Helius or Quick Node.

How do I change the fee?

Modify the unit_budget and unit_price values.

Does this code work on devnet?

No.

Example

from solana.rpc.api import Client
from solders.keypair import Keypair  # type: ignore

from pool_utils import fetch_pair_from_rpc
from pump_swap import buy

# Configuration
priv_key = "base58_priv_str_here"
rpc = "rpc_url_here"
mint_str = "pump_swap_address"
sol_in = 0.1
slippage = 5
unit_budget = 150_000
unit_price = 1_000_000

# Initialize client and keypair
client = Client(rpc)
payer_keypair = Keypair.from_base58_string(priv_key)

# Fetch pair and execute buy
pair_address = fetch_pair_from_rpc(client, mint_str)
if pair_address:
    buy(client, payer_keypair, pair_address, sol_in, slippage, unit_budget, unit_price)
else:
    print("No pair address found...")

from solana.rpc.api import Client
from solders.keypair import Keypair  # type: ignore

from pool_utils import fetch_pair_from_rpc
from pump_swap import sell

# Configuration
priv_key = "base58_priv_str_here"
rpc = "rpc_url_here"
mint_str = "pump_swap_address"
percentage = 100
slippage = 5
unit_budget = 150_000
unit_price = 1_000_000

# Initialize client and keypair
client = Client(rpc)
payer_keypair = Keypair.from_base58_string(priv_key)

# Fetch pair and execute buy
pair_address = fetch_pair_from_rpc(client, mint_str)

if pair_address:
    sell(client, payer_keypair, pair_address, percentage, slippage, unit_budget, unit_price)
else:
    print("No pair address found...")

Contributors

https://github.com/Jarki