MEV Shield: Micropayment-Gated Mempool AI

MEV Shield is a real-time pre-trade intelligence layer for DeFi traders and autonomous agents. It captures live Ethereum mempool transactions from multiple sources (PublicNode, Alchemy, Infura), scoring each pending swap using proprietary microstructure signals — Hawkes process order-flow clustering, Kyle's Lambda price impact, and VPIN toxicity — to detect sandwich attacks and frontrunning risk before execution. Each transaction receives a cliff score (VPIN × LOB depth × gas Z-score) that quantifies extraction probability. Pools are monitored continuously with per-pool intelligence cards showing Hawkes intensity, Kyle's Lambda impact, and next-attack timing estimates. Bot fingerprinting clusters known MEV addresses by behavioral signature. Intelligence is delivered as a metered API where consumers pay $0.01 per alert via Nitrolite ERC-7824 off-chain state channels, eliminating per-query gas costs. Payments are cryptographically signed ECDSA state updates — verifiable without touching the chain. When accumulated payments reach a threshold, the channel closes via a Flashbots MEV-protected transaction and settles autonomously as a real USDC transfer on-chain via Circle Arc developer-controlled wallets, confirmed on ETH-Sepolia. Claude, AIsa.one provides pre-trade risk assessments on every fifth alert, combining quantitative microstructure signals with natural language recommendations covering slippage tolerance, private mempool routing, and sandwich guard configuration. AI agents can autonomously consume and pay for real-time financial intelligence. No subscriptions, no API keys per user, no manual settlement — just a self-sustaining micropayment loop. Live mempool data flows in, off-chain ECDSA payments accumulate, on-chain USDC settles when the threshold is reached. DeFi traders lose an estimated $1-3B annually to MEV extraction. MEV Shield is the pre-trade defense layer that makes institutional-grade microstructure analysis accessible at $0.01 per query.