Ethereum sniper bots: MevX, Maestro and Sigma

Ethereum sniping costs: gas, bot fees and failed transactions

On Ethereum, a fast snipe can still lose money: gas and failed transactions eat into every entry. A sniper bot watches for new liquidity and buys the instant a token becomes tradable, faster than any manual trader. But block times, gas costs and sandwich-attack risk decide whether that snipe actually lands at a profit.

• Bot fee: about 1% per trade on Ethereum for all three bots here, so the fee rarely separates them.
• Gas: paid on every attempt, and spikes hard during busy launches. Our fee and slippage calculator shows what that does to your break-even.
• Failed transactions: on most bots a missed snipe still burns gas. Sigma is the exception.
• MEV: an unprotected order can be sandwiched for a worse price; all three bots offer protection.

So the right pick comes down to your strategy more than any single spec sheet. Each bot below handles these costs differently.

MevX vs Maestro vs Sigma on Ethereum

All three trade Ethereum from Telegram for about 1%; they differ in reach, protection and what happens when a trade fails.

All three are free to start: no subscription, just a cut of each completed trade. All three also offer copy trading, limit orders and MEV protection.

MevX: six chains, cheaper outside Ethereum

MevX fits best when Ethereum is just one of the chains you trade. It runs as a Telegram bot, a web app and a Chrome extension across Ethereum, BNB Chain, Base, Solana, Robinhood Chain and Monad.

Fees vary by chain: 0.5% on BNB Chain, 0.8% on Solana and roughly 1% on Ethereum and the rest. The Ethereum feature that changes how you trade is Bubble Maps: it draws holder concentration as colored clusters, so you see whether supply sits with a few connected wallets before you spend a single wei.

One warning: impersonator MevX bots on Telegram are a documented problem. Always start from mevx.io or our link below.

• ⚡ Instant Trade Mode: one-click trading with a preset wallet, buy amounts and sell percentages.
• 🎯 Sniper Mode: buys new tokens at launch with presets for slippage, gas and safety filters.
• 👥 Copy trading: mirrors wallets in real time on all supported chains.
• 📈 Limit orders by market cap: orders set on market cap targets, not just price.
• 📊 Multichart: up to 10 token charts at once, tradable from each panel.
• 🫧 Bubble Maps: related wallets shown as same-colored bubbles to spot clusters.
• 🖥️ Chrome extension: trading controls beside any chart or feed, including DEXScreener and CoinGecko.
• 🎮 Demo Mode: practice with virtual funds on BNB Chain.
• 📉 Trailing stops and DCA: trailing stop orders on memecoins, plus scheduled buys.

Maestro on Ethereum: Anti-Rug protection

Maestro is the pick when protection on early launches matters most. It launched in 2022, built around patented Anti-Rug technology, and now counts 573,000 users and more than $12.8 billion in lifetime volume across 15 chains.

When a suspicious transaction hits the mempool, Anti-Rug is designed to sell your position before the rug executes, something neither of the other two bots here offers in patented form. It can still be outbid, and some scams leave no mempool signal, so token checks still matter.

The fee is a flat 1%, with up to 30% cashback by volume through /cashback. Premium at $200 a month adds the fastest execution, 12 copy-trade wallets per chain, 30 monitors and simulation tools, a real commitment for casual traders. Block-0 sniping works on ETH and BSC only, and Maestro is Telegram-only.

• 🎯 Auto-Sniping (Block-0): detects launches in the mempool and buys in the first block on ETH and BSC.
• ⚡ God Mode: buys the instant liquidity appears, Maestro's fastest entry on ETH and BSC.
• 🛡️ Anti-Rug (patented): watches the mempool for malicious transactions and is designed to exit before they execute.
• 👥 Copy trading: 3 wallets free or 12 per chain on Premium; frontrun or match on ETH and BSC; Track Only mode.
• 📐 Limit Orders 2.0: several TP/SL levels, ladder sells, staged exits and Entry Price % targets.
• 📊 Positions Ledger: every open position across wallets and chains in one panel.
• 🔄 Signals and DCA: auto-buys tokens called in connected channels; scheduled buys by interval and amount.
• 🌉 Houdini Swap bridge: private cross-chain swaps up to $50,000 per order.
• 💼 Multi-wallet: 10 wallets plus 5 copy-trade and 5 auto-snipe wallets per chain.

Sigma: no gas on failed transactions

Sigma is the one that doesn't charge gas when a transaction fails, which matters on Ethereum, where failed snipes during congestion are routine. It launched in February 2024 and built its name as one of the first stable bots on Base.

Its signature feature is automatic chain detection: paste any contract address and Sigma works out the blockchain itself. Bounce between Ethereum, Base, BNB Chain, Avalanche and Solana all day and that removes a recurring source of mistakes. It also gives early access to tokens launched through the Virtuals protocol on Base.

Sigma supports 8 chains: Ethereum, Base, BNB Chain, Avalanche, Robinhood Chain, Arc, Stable and Solana. Arbitrum and Blast are no longer supported. Fees are 1% on every EVM chain and 0% on Solana, with no subscription, and a web terminal at app.sigma.win mirrors the bot.

• 🔍 Automatic chain detection: identifies the blockchain from any pasted contract address.
• 🎯 Auto Sniper: buys at listing with your parameters on every supported chain.
• 👥 Copy trading: mirrors wallet trades automatically.
• 📈 DCA and limit orders: scheduled buys and automatic buy and sell targets.
• 🛡️ MEV and re-org protection: routing that blocks frontrunning and chain-reorganization attacks.
• ⛽ No gas on failed transactions: a failed trade costs you nothing in gas.
• 🏎️ First or Fail (FoF): the trade fails outright unless it secures a first-block position.
• 🧨 Alpha Mode: switches off every protection for high-tax or honeypot tokens. For experts only.
• 🌉 Bridge and multi-wallet: built-in bridging and up to 10 wallets.

If you move between Base, Ethereum and BNB Chain and pick the network by hand before every trade, auto-detection pays for itself in avoided mistakes within the first week.

Is it safe to connect your wallet to an Ethereum sniper bot?

Generally yes, if the bot is non-custodial and never asks for your seed phrase, and all three qualify. The real risks are smart-contract exploits, scam clones and human error, not these bots themselves.

• MevX is KYC-verified by Assure DeFi and routes trades through a private RPC.
• Maestro stores private keys with AES encryption.
• Sigma gives full key control, with wallet import and export.

The trap that catches people is the fake clone. Start from the official sites every time: mevx.io, maestrobots.com and sigma.win. Then turn MEV protection on, especially around busy launch windows where sandwich attacks cluster. Our guide on whether sniper bots are safe covers the token checks no bot does for you.

How traders snipe Ethereum launches with these bots

Picking a bot is one decision; deploying it well is what separates consistent traders from lucky ones. These six approaches work on Ethereum now.

1. Block-0 launch sniping (Maestro). Use God Mode to enter as liquidity lands, and set Dynamic Max Buy Adjustment so your snipe isn't rejected during a crowded launch.
2. Holder check before entry (MevX). Open Bubble Maps first. If one cluster controls more than 30% of supply, walk away: the odds of a coordinated dump are too high, and you'd be someone's exit liquidity.
3. Copying whale wallets (all three). On Maestro, run Track Only first to watch a wallet before risking money. On Sigma, set a minimum sell threshold so you only mirror exits that clear a profit floor.
4. Migration sniping on Base (Sigma). Set an auto-snipe for tokens completing their bonding curve to catch the post-migration price early.
5. Staged entries (Maestro). Ladder into high-conviction positions across 3 price levels with Limit Orders 2.0 instead of going full size at launch; on Ethereum, many small buys get expensive in gas.
6. Browser-overlay trading (MevX). With the Chrome extension you trade straight from DEXScreener or CoinGecko; when a token breaks out on the chart in front of you, the saved second or two is the edge.

BloomEVM is another option on Ethereum worth knowing. Rebuilt on a v2.0 architecture with sub-millisecond on-chain event detection, it trades ETH, BSC, Base and HyperEVM from one bot.

Its specialties are social trading: a Twitter/X scraper that finds tokens from posts, OCR that reads a contract address off a screenshot, and an AFK mode that trades around the clock. It charges 1% with an automatic 10% cashback (about 0.9% effective) and has a Chrome extension too. Our Bloom review has the details.

How to set up Sigma on Ethereum

Six steps take you from Telegram to a first protected Sigma trade. Sigma's own quick start video covers the same ground.

1. Open Sigma. Start it from the button below and send /start.
2. Create or import a wallet. Generate a new one or import a private key; use a dedicated trading wallet holding only what you mean to trade. Up to 10 wallets.
3. Fund it. Send ETH, or the target chain's gas token. There's no minimum deposit, but budget gas on top of your trade size.
4. Set your sniper defaults. Choose slippage, gas priority and MEV mode. For new launches, switch on First or Fail so you don't pay gas for a snipe that was never going to land.
5. Paste a contract address. Sigma detects the network and shows token details, estimated price impact and safety flags before you confirm.
6. Add take-profit and stop-loss. Set an exit at your target and a stop below entry; both fire on their own.

Prefer a browser? The web terminal at app.sigma.win mirrors everything. For the wider picture across chains, see our Telegram sniper bot roundup.