Skill 15 mev protection

Skill vaquarkhan/web3-agent-skills/skills/skill-15-mev-protection

Production-grade Agent Skills for Web3 AI agents: 15 workflows, 6 MCP servers, DeFi/NFT/compliance guardrails, and VS Code/JetBrains installers.

Install

npx -y skills add vaquarkhan/web3-agent-skills --skill skill-15-mev-protection

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Protects transactions from MEV via Flashbots, intent-based trading, sandwich attack mitigation, and TWAP orders. Use for high-value swaps, liquidations, or any MEV-exposed on-chain activity.

SKILL.md

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MEV Protection

When to Use

Executing swaps > $1,000 on public mempools
Protecting against sandwich attacks
Submitting liquidation transactions
Implementing TWAP/VWAP execution strategies
Using intent-based protocols (CoW Swap, UniswapX)

Prerequisites

MCP: blockchain-rpc-server, price-feed-server
Skill-12 for private tx submission

MEV Attack Vectors

Attack	Mechanism	Mitigation
Sandwich	Front-run buy + back-run sell	Private mempool, slippage limits
Frontrunning	Copy profitable tx with higher gas	Flashbots bundle, commit-reveal
Backrunning	Arbitrage after your tx	Accept (usually harmless)
JIT Liquidity	Temporary LP around your swap	TWAP, smaller chunks

Workflow

1. Private Transaction Submission

Ethereum (Flashbots Protect):

RPC: https://rpc.flashbots.net

No revert protection by default — add X-Flashbots-Signature for bundles
Transactions not visible in public mempool

MEV-Share: Share MEV refund with searchers while maintaining privacy.

2. Intent-Based Trading

Protocol	Chain	Mechanism
CoW Swap	Ethereum	Batch auctions, MEV redistribution
UniswapX	Multi	Dutch auctions, filler network
1inch Fusion	Multi	Resolver competition

Prefer intent-based routing for trades > $10,000.

3. TWAP Execution

For large orders splitting across time:

chunkSize = totalAmount / numChunks
interval = totalDuration / numChunks

Split order into N equal chunks
Execute each via private RPC with randomized timing (±10%)
Monitor cumulative slippage vs benchmark price
Pause if cumulative slippage exceeds threshold

4. Slippage Configuration

Trade Size	Recommended Slippage	Method
< $1K	0.5%	Public or private
$1K–$10K	0.5–1%	Private mempool
$10K–$100K	TWAP 5–10 chunks	Intent or Flashbots
> $100K	TWAP + intent protocol	CoW/UniswapX

Pre-Execution

Private RPC configured for target chain
Slippage and deadline set on swap params
Simulation confirms no revert
User confirmed if trade > $10,000

References

references/flashbots-setup.md
references/intent-protocols.md