Watch every MEV arbitrage trade settle live on Ethereum.
Production-grade arbitrage software you can license or own outright.
MevLex is a live Ethereum MEV arbitrage system. Run it through a managed license, or own the complete source code and deploy it yourself.
Live execution feed
A public feed of bundle submissions from the reference deployment, updating block by block. Every entry settles on-chain — inspect any transaction on Etherscan and cross-check it against Flashbots MEV-Inspect.
Why operators choose MevLex
Own capital or flash loans — whichever earns more
MevLex runs one strategy relentlessly: on-chain arbitrage. For every opportunity it compares funding it from its own capital (no fees, full spread) against a flash loan (no capital at risk) and takes whichever nets more after gas. Every execution settles atomically on-chain and is independently verifiable.
Cross-DEX & triangular arbitrage
Price discrepancies across Uniswap V2/V3, SushiSwap, Curve, Balancer and PancakeSwap. Multi-hop routes, triangular loops and cross-pool tails — including JIT liquidity on Uniswap V3 — packed into one revert-protected bundle.
Own-capital execution — 0 provider fees
When the bot holds enough capital, it funds the trade itself. No flash-loan provider fee, so it keeps the full spread — the highest-margin path, and the fastest to land on tight edges.
Flash-loan execution — 0 capital at risk
When size beats fee, the bot borrows the leg atomically and repays in the same bundle. Zero upfront capital, effectively unlimited size; the provider fee is netted out before it ever submits.
Sandwich & front-running — our next MEV strategy, shipping as a separate MevLex app built on the same revert-protected bundle engine as the arbitrage bot.
How every trade works
Every opportunity runs the same path — spotted in the mempool, simulated against live state, funded, packed into one atomic bundle, and submitted to block builders. It happens continuously — decoded and simulated in milliseconds, submitted every block — and every landed bundle is public on Etherscan.
Mempool ingestion
<10 ms decodePending transactions stream in from low-latency nodes and private orderflow. Every DEX swap is decoded and scored in single-digit milliseconds — the window before it lands.
Opportunity detection
cross-DEX · triangularThe engine diffs prices across every monitored DEX and pool — cross-DEX, triangular and multi-hop routes, plus JIT liquidity windows — and scores each candidate for net edge before it lands.
Funding decision
own funds vs flash loanFor each candidate the bot compares funding it from its own capital (no provider fee, full spread) against a flash loan from Balancer, Aave V3, Uniswap V3 or Maker (no capital at risk) — and picks whichever nets more.
State simulation
net-profit gateThe chosen path is fork-simulated (eth_call / revm) against live chain state. Net profit is computed after gas, builder bribe and any flash-loan fee; anything that does not clear a net profit is dropped before it costs a wei.
Atomic bundle & builder submission
atomic-or-revert · builder-directArb legs — plus the flash-loan borrow/repay when used — are packed into one revert-protected bundle and submitted builder-direct to beaverbuild, Titan, rsync-builder, BuilderNet and Quasar, with competitive bribes to win contested blocks.
On-chain inclusion
verifiableThe winning builder lands the bundle in-block. Every transaction is public on Etherscan — the record is independent of any claim we make.
Built for low-latency execution
Direct block-builder connectivity, dual funding — own capital or multi-provider flash loans — and same-block bundle submission across every major DEX.
- beaverbuild
- Titan
- rsync-builder
- BuilderNet
- Quasar
- Balancer V2 — 0%
- Aave V3 — 0.05%
- Uniswap V3
- Maker DSS
- Uniswap V2 / V3
- SushiSwap
- Curve
- Balancer
- PancakeSwap
- Public mempool
- bloXroute BDN
- Flashbots MEV-Share
Managed license or full source code
Run a managed instance on our low-latency infrastructure with a one-year license, or take the complete Solidity and off-chain source and run it yourself or on our nodes — your choice. Both execute the same production arbitrage, with every trade settled on-chain and independently verifiable.30-day money-back guarantee.
- Managed dedicated bot instance
- Arbitrage enabled — own-funds + flash-loan execution
- Direct builder relay submission
- Native desktop control panel
- 1 year of updates + 24/7 support
- Everything in the 1-Year License — app included
- Own the complete MEV bot source (Solidity + off-chain bot)
- Deployment scripts — run managed or self-hosted
- Lifetime app license (macOS + Windows), no renewal
- 1 year of updates + 24/7 support
| Compare | 1-Year License | Full Source Code |
|---|---|---|
| Deployment | Managed on our servers | Managed or self-hosted |
| Arbitrage — own-funds + flash-loan execution | ||
| Direct builder relay submission | ||
| App license + desktop app (macOS + Windows) | 1 year | Lifetime |
| Full source code (Solidity + off-chain bot) | ||
| Deployment scripts | ||
| Modify / extend the bot | ||
| Updates included | 1 year | 1 year |
| 24/7 support | ||
| Best for | Run it now, zero setup | Own & customize the stack |
Profit calculator
A reference model for how deployed capital shapes execution economics. Adjust the inputs to see the figures for your own balance.
Why we sell access — and why it doesn't dilute the edge
The fair question for any profitable MEV system is why anyone would license it out. Here is the honest answer.
The mempool is bigger than any one bot
Ethereum processes thousands of transactions every second. No single searcher — not us, not the largest operators on-chain — captures more than a fraction of the extractable value. There is far more opportunity than any one bot can execute.
Every instance runs its own strategy
Each licensed bot is configured with its own parameters and opportunity routing, so it does not collide with our bot or with other operators. Instances target different flow rather than bidding each other up on the same trade.
Licensing is a real revenue line
Selling access is as profitable for us as running the bot ourselves, and it diversifies our revenue. We keep operating our own capital — licensing simply monetizes capacity we would otherwise leave on the table.
Frequently Asked Questions
Common questions about the MevLex bot, pricing, refunds, and support.
What is the MevLex MEV bot?+
How is the bot delivered? Do I install something?+
What strategies does the bot run?+
How do I get started?+
Can I get a refund?+
How do I know this is not a scam?+
Can I actually watch the bot running?+
If more people run it, doesn't the edge disappear?+
Are MEV bots legal?+
Do I need to know Solidity?+
What support do I get?+
Start running MevLex.
One MEV desk running on-chain arbitrage on Ethereum — every opportunity funded from its own capital (zero flash-loan fees) or a flash loan (zero capital at risk), whichever nets more. Every trade settles on-chain and is independently verifiable. Managed low-latency infrastructure, backed by a 30-day money-back guarantee.