pump_fun_py

Python library to trade on pump.fun.

pip install solana==0.36.1 solders==0.23.0

Updated: 9/3/2025

Contact

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

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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 pump_fun import buy

# Configuration
priv_key = "base58_priv_str_here"
rpc = "rpc_url_here"
mint_str = "pump_token_address"
sol_in = 0.1
slippage = 5
unit_budget = 120_000
unit_price = 1_000_000

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

# Execute buy
buy(client, payer_keypair, mint_str, sol_in, slippage, unit_budget, unit_price)

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

from pump_fun import sell

# Configuration
priv_key = "base58_priv_str_here"
rpc = "rpc_url_here"
mint_str = "pump_token_address"
percentage = 100
slippage = 5
unit_budget = 120_000
unit_price = 1_000_000

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

# Execute sell
sell(client, payer_keypair, mint_str, percentage, slippage, unit_budget, unit_price)