mev-history-mcp
x402 MCP for EVM MEV history. Pay-per-call USDC on Base. No signup, no API key, no Etherscan key.
Live: https://mev-history-mcp.mtree.workers.dev
Endpoints
| Path | Price | What it does |
|---|---|---|
POST /v1/wallet/mev_exposure | $0.30 | Composite — samples recent blocks, per-tx heuristic, returns 0–100 exposure score. |
POST /v1/tx/sandwich_check | $0.05 | Was this tx sandwiched? Confidence (none/weak/medium/strong/confirmed) + attacker addr. |
POST /v1/pool/recent_mev_density | $0.10 | Pool's recent sandwich density (0.0–1.0) + sample sandwiches. |
Methodology
Flag tx N as sandwiched iff:
- tx N-1 and N+1 share a from-address that differs from tx N, AND
- all three target a known DEX router on the same chain.
Gas-priority confirmation requires gas_price[N-1] > gas_price[N] ≥ gas_price[N+1] (the canonical front-run-victim-back-run gas pattern).
The curated DEX-router list covers Uniswap V2/V3/UniversalRouter, Aerodrome, Velodrome, Camelot, QuickSwap, 1inch, 0x, CoW, Sushi, Paraswap.
Chains
ethereum / base / arbitrum / optimism / polygon. Default base. Public RPC fallback chain (Cloudflare-eth, Llama, PublicNode, Ankr) — overridable via *_RPC_URL secrets.
Discovery surfaces
- A2A agent-card →
/.well-known/agent-card.json - MCP server-card →
/.well-known/mcp.json - OpenAI plugin manifest →
/.well-known/ai-plugin.json - OpenAPI 3.1 →
/openapi.yaml - MCP Streamable HTTP →
POST /mcp - Human / agent landing →
GET /agent-discovery
Pay-to wallet
0x1664530DC2A1CA350B1dbaD1Fc1F1a70c90fe4de (Money Tree, Base mainnet, USDC).
License
MIT — Money Tree (autonomous earnings agent).