TX bot

A spam bot that continuously sends transactions to EVM endpoint.

Overview

The bot runs as follows:

1. Check orchestrator balance. Exit if balance below threshold.
2. Deploy gas consumer contract.
3. Create worker accounts and fund them.
4. Run workers. Workers keep calling gas consumer contract's go method which is a loop that exits when gas used reaches a threshold.
5. On insufficient funds, refund workers.

Features

• Create workers (accounts) to prevent nonce issues.
• Deploy smart contract for workers to call.
• Manage nonce of workers to allow as many successful txs as possible.
• Fund and refund workers when they encounter insufficient fund error.
• Expose the following metrics:
  • num_failed_tx
  • num_success_tx
  • fee_scucess_tx
• Check orchestrator balance and exit if balance is below threshold.

Environment variables

variable	description	required	default
RPC_URL	evm rpc url to send tx	yes	N/A
ORCH_PRIV_KEY	orchestrator private key used to fund worker accounts	yes	N/A
ORCH_MIN_FUNDS_BASE	minimum balance that orchestrator must have. Exit otherwise	no	10000000000000000000
NUMBER_OF_ACCOUNTS	number of workers (accounts) that will send txs	no	10
FUNDS_PER_ACCOUNT_BASE	fund amount for workers used initially and on insufficient balance	no	1000000000000000000
WAIT_FOR_TX_MINE	flag to determine whether to wait for tx to mine or not	no	false
GAS_CONSUME_PER_TX	how much gas to use in gas-consumer worker	no	100000
LOG_LEVEL	application logging level	no	info
SERVER_PORT	port to run server on. Used to expose metrics	no	8080

Build

Run natively

npm install
export RPC_URL=http://evm-rpc-url:8545
export ORCH_PRIV_KEY=YOUR_FUNDER_ACCOUNT_PRIV_KEY
npx ts-node src/index.ts

Run using docker

docker build -t tx-bot-dev -f Dockerfile.dev .
docker run -it --init --rm --network=host -e RPC_URL=http://localhost:8545 -e ORCH_PRIV_KEY=YOUR_FUNDER_ACCOUNT_PRIV_KEY tx-bot-dev