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Project description
This library works by injecting a new module in the Web3.py instance, which allows
submitting "bundles" of transactions directly to miners. This is done by also creating
a middleware which captures calls to eth_sendBundle
and eth_callBundle
, and sends
them to an RPC endpoint which you have specified, which corresponds to mev-geth
.
To apply correct headers we use FlashbotProvider which injects the correct header on post
Example
from eth_account.signers.local import LocalAccount
from web3 import Web3, HTTPProvider
from flashbots import flashbot
from eth_account.account import Account
import os
ETH_ACCOUNT_SIGNATURE: LocalAccount = Account.from_key(os.environ.get("ETH_SIGNATURE_KEY"))
w3 = Web3(HTTPProvider("http://localhost:8545"))
flashbot(w3, ETH_ACCOUNT_SIGNATURE)
Now the w3.flashbots.sendBundle
method should be available to you. Look in examples/simple.py
for usage examples
Development and testing
Setup and run (mev-)geth with Websocket support:
geth --http --http.api eth,net,web3,txpool --syncmode full
Install poetry
Poetry will automatically fix your venv and all packages needed
poetry install
Tips: PyCharm has a poetry plugin
Linting
It's advisable to run black with default rules for linting
sudo pip install black # Black should be installed with a global entrypoint
black .
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