Python  

Mastering Monad Testnet: Automate Your Developer Activity with Python 🐍

Introduction

A complete guide to interacting with the Monad Testnet using Web3.py. Learn to wrap tokens, deploy contracts, and find the fastest RPCs automatically.

Why Monad? πŸ’œ

If you're reading this, you know Monad is the hottest Layer 1 right now. It promises 10,000 TPS and full EVM compatibility. But as a developer (or airdrop farmer 🚜), manually clicking "Swap" every day to keep your wallet active on the Testnet is painful.

RPCs go down. Transactions fail. It's a grind.

So I decided to automate it.

In this tutorial, I'll show you how to build a "Monad Swiss Knife" in Python that:

  • Auto-switches to the fastest RPC (no more timeouts).

  • Wraps/Unwraps MON (DeFi activity).

  • Deploys Contracts and Mints NFTs.

πŸ›‘ Too lazy to code?
You can just download the finished tool here: https://github.com/CryZenXs/Monad-Swiss-Knife

It’s open source and free.

Prerequisites πŸ› οΈ

You'll need Python installed and a few libraries:

pip install web3 rich python-dotenv requests

Step 1: Finding a Fast RPC πŸš€

Monad Testnet is busy. Public RPCs get congested. We need a function that tests multiple endpoints and picks the winner.

import time
import requests

# Valid Monad Testnet RPCs
RPCS = [
    "https://testnet-rpc.monad.xyz/",
    "https://rpc-testnet.monadinfra.com",
    "https://rpc.ankr.com/monad_testnet"
]

def get_fastest_rpc():
    best_rpc = None
    min_latency = float('inf')

    for rpc in RPCS:
        try:
            start = time.time()
            requests.post(rpc, json={"jsonrpc":"2.0","method":"eth_blockNumber","id":1}, timeout=2)
            latency = (time.time() - start) * 1000
            print(f"{rpc}: {latency:.2f}ms")

            if latency < min_latency:
                min_latency = latency
                best_rpc = rpc
        except:
            continue

    return best_rpc

Step 2: The Automator Class πŸ€–

Now, let's build the core logic to interact with the blockchain using web3.py.

from web3 import Web3
import os

class MonadBot:
    def __init__(self, rpc_url, private_key):
        self.w3 = Web3(Web3.HTTPProvider(rpc_url))
        self.account = self.w3.eth.account.from_key(private_key)

    def wrap_mon(self, amount_eth=0.01):
        # Canonical WMON Contract on Monad Testnet
        wmon_address = "0xFb8bf4c1CC7a94c73D209a149eA2AbEa852BC541"

        tx = {
            'to': wmon_address,
            'value': self.w3.to_wei(amount_eth, 'ether'),
            'gas': 50000,
            'nonce': self.w3.eth.get_transaction_count(self.account.address),
            'chainId': 10143, # Monad Testnet ID
            'data': '0xd0e30db0' # Deposit() selector
        }

        # Sign and Send
        signed_tx = self.w3.eth.account.sign_transaction(tx, self.account.privateKey)
        tx_hash = self.w3.eth.send_raw_transaction(signed_tx.rawTransaction)
        return self.w3.to_hex(tx_hash)

Step 3: Putting It Together (The CLI) πŸ–₯️

I used the rich library to make a beautiful terminal interface.

The full code handles errors, retries, and even has an NFT minter.

Conclusion & Download 🎁

Building your own tools is the best way to learn Web3. But if you just want the results, grab the full code from my repo.

Features in the full version:

  • βœ… Multi-RPC Support

  • βœ… NFT Minting Logic

  • βœ… Beautiful CLI Menu

  • βœ… Gas Optimization

πŸ‘‰ https://github.com/CryZenXs/Monad-Swiss-Knife

If this helped you, drop a star on the repo! Happy farming! 🟣

Summary

This guide demonstrated how to interact with the Monad Testnet using Web3.py, including automatically selecting the fastest RPC, wrapping MON tokens, and structuring a CLI-based automation tool. The approach reduces manual effort, improves reliability when RPC endpoints fail, and provides a foundation for deploying contracts and minting NFTs programmatically.

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