MEV Shield

Advanced protection against MEV attacks including frontrunning, sandwich attacks, and transaction reordering. Keep your trades private and profits secure.

$45M+

Protected Volume

100%

Frontrun Prevention

0

Mempool Exposure

50K+

Protected Transactions

What is MEV?

MEV (Maximal Extractable Value) refers to the profit that can be extracted by reordering, inserting, or censoring transactions within a block. Bots monitor the mempool and exploit transaction ordering to extract value from users.

Frontrunning

Bots see your pending transaction and submit a similar one with higher gas fees, executing before you and profiting from price movement.

Loss = (P_after - P_before) × Amount

Sandwich Attacks

Attackers place a buy order before your transaction and a sell order after, profiting from the price impact you create.

Profit = (Sell_price - Buy_price) × Volume

Transaction Reordering

Validators reorder transactions within a block to maximize their profit, potentially at the expense of regular users.

MEV_extracted = Σ Profit_{tx_i}

How MEV Shield Protects You

Standard Transaction (Vulnerable)

Your Wallet

Submit transaction

→

Public Mempool

⚠️ Visible to bots

→

MEV Bots

⚠️ Frontrun/sandwich

→

Blockchain

Transaction confirmed

Protected with MEV Shield

Your Wallet

Submit transaction

→

Private Relay

✓ Encrypted channel

→

Trusted Validators

✓ Direct submission

→

Blockchain

Safe confirmation

✓ Zero mempool exposure • ✓ No frontrunning • ✓ No sandwich attacks

Attack Vector Comparison

Attack Type	Standard RPC	MEV Shield	Protection Method
Frontrunning	❌ Vulnerable	✓ Protected	Private mempool bypass
Sandwich Attacks	❌ Vulnerable	✓ Protected	Direct validator submission
Transaction Reordering	❌ Vulnerable	✓ Protected	Trusted validator network
Back-running	❌ Vulnerable	✓ Protected	Transaction privacy
Uncle Bandit Attacks	❌ Vulnerable	✓ Protected	Block inclusion guarantee
Time-Bandit Attacks	❌ Vulnerable	✓ Protected	MEV-aware routing

Integration Examples

JavaScript (Ethers.js)

const { ethers } = require('ethers');

// Connect to MEV Shield protected RPC
const provider = new ethers.JsonRpcProvider(
    'https://mev-shield.axiomlabs.studio',
    {
        name: 'mainnet',
        chainId: 1
    }
);

// Create wallet
const wallet = new ethers.Wallet(privateKey, provider);

// Send protected transaction
async function sendProtectedSwap() {
    const uniswapRouter = new ethers.Contract(
        UNISWAP_ROUTER_ADDRESS,
        UNISWAP_ABI,
        wallet
    );

    // This transaction will NOT be visible in the public mempool
    const tx = await uniswapRouter.swapExactTokensForTokens(
        amountIn,
        amountOutMin,
        path,
        wallet.address,
        deadline,
        {
            // MEV Shield automatically routes through private relay
            gasLimit: 300000,
            maxPriorityFeePerGas: ethers.parseUnits('2', 'gwei')
        }
    );

    console.log('Protected transaction submitted:', tx.hash);

    const receipt = await tx.wait();
    console.log('Transaction confirmed in block:', receipt.blockNumber);

    return receipt;
}

JavaScript (Web3.js)

const Web3 = require('web3');

// Connect to MEV Shield
const web3 = new Web3('https://mev-shield.axiomlabs.studio');

// Add private key
const account = web3.eth.accounts.privateKeyToAccount(privateKey);
web3.eth.accounts.wallet.add(account);

// Protected DEX trade
async function executeProtectedTrade() {
    const contract = new web3.eth.Contract(DEX_ABI, DEX_ADDRESS);

    // Transaction stays private until confirmed
    const tx = await contract.methods
        .swap(tokenIn, tokenOut, amountIn, minAmountOut)
        .send({
            from: account.address,
            gas: 250000,
            maxPriorityFeePerGas: web3.utils.toWei('2', 'gwei')
        });

    console.log('MEV-protected trade executed:', tx.transactionHash);
    return tx;
}

Python (Web3.py)

from web3 import Web3

# Connect to MEV Shield
w3 = Web3(Web3.HTTPProvider('https://mev-shield.axiomlabs.studio'))

# Your account
account = w3.eth.account.from_key(private_key)

# Protected transaction function
def send_protected_transaction(to_address, value, data=''):
    # Build transaction
    tx = {
        'from': account.address,
        'to': to_address,
        'value': w3.to_wei(value, 'ether'),
        'gas': 21000,
        'maxPriorityFeePerGas': w3.to_wei('2', 'gwei'),
        'maxFeePerGas': w3.to_wei('50', 'gwei'),
        'nonce': w3.eth.get_transaction_count(account.address),
        'chainId': 1,
        'data': data
    }

    # Sign and send through MEV Shield
    signed_tx = account.sign_transaction(tx)
    tx_hash = w3.eth.send_raw_transaction(signed_tx.rawTransaction)

    print(f'Protected tx submitted: {tx_hash.hex()}')

    # Wait for confirmation
    receipt = w3.eth.wait_for_transaction_receipt(tx_hash)
    return receipt

Protection Metrics

MEV Protection Score

MPS = (T_protected / T_total) × (1 - L_mempool) × 100

T_protected = Protected transactions, L_mempool = Mempool exposure (0 for MEV Shield)
MEV Shield Score: 100/100

Slippage Reduction

SR = ((S_standard - S_protected) / S_standard) × 100

Average slippage without protection: 0.8%, with MEV Shield: 0.1%
Slippage Reduction: 87.5%

Value Saved Per Transaction

V_saved = MEV_potential - Fee_protection

Typical MEV loss: $50-500 per trade, Protection fee: $0.50
Average Savings: $124 per transaction

Time to Inclusion

T_inclusion = T_block + T_confirmation

Direct validator submission ensures fast inclusion
Average: 12 seconds (1 block)

Key Features

Private Mempool

Your transactions never enter the public mempool, making them invisible to MEV bots and searchers.

Frontrun Prevention

Direct validator submission prevents bots from front-running your trades with higher gas prices.

Sandwich Protection

Eliminates sandwich attacks by ensuring your transaction can't be surrounded by malicious orders.

Trusted Validators

Transactions are submitted directly to a network of trusted validators who don't engage in MEV extraction.

Reduced Slippage

By preventing MEV attacks, you get better execution prices and significantly reduced slippage on trades.

Real-time Monitoring

Track your protected transactions in real-time with detailed analytics and savings reports.

Who Needs MEV Shield?

DEX Traders

Protect your swaps on Uniswap, SushiSwap, and other DEXs from sandwich attacks and frontrunning.

Large volume trades
Token launches
Arbitrage opportunities

NFT Collectors

Secure your NFT purchases and avoid getting front-run on limited edition drops and rare item acquisitions.

NFT mints
Marketplace purchases
Auction bids

DeFi Protocols

Integrate MEV protection into your protocol to provide better UX and protect your users from value extraction.

Lending platforms
Yield aggregators
Liquidity pools

dApp Developers

Build applications with built-in MEV protection to enhance security and user experience.

Wallet integrations
Trading interfaces
DeFi dashboards

Protected RPC Endpoints

Available Networks

# Ethereum Mainnet
https://mev-shield.axiomlabs.studio/mainnet

# Polygon
https://mev-shield.axiomlabs.studio/polygon

# Arbitrum
https://mev-shield.axiomlabs.studio/arbitrum

# Optimism
https://mev-shield.axiomlabs.studio/optimism

# Base
https://mev-shield.axiomlabs.studio/base

# BSC
https://mev-shield.axiomlabs.studio/bsc

Simply replace your RPC URL

MEV Shield is compatible with all Ethereum wallets and tools. Just swap your RPC endpoint and enjoy automatic protection with zero code changes.