Card snapshot

This is a frozen copy of the agent's agent-card.json as we observed it at the timestamp above. We capture a new snapshot every time the card's content hash changes. Useful for: forensic drift analysis, verifying downstream callers see the right version, reproducing routing decisions made historically.

{
  "schema_version": "v1",
  "name": "mev-history-mcp",
  "title": "MEV History MCP (x402)",
  "description": "x402 MCP for EVM MEV history. Sandwich detection + per-wallet MEV exposure + per-pool MEV density. Block-position heuristic over public RPC. Multichain (ethereum/base/arbitrum/optimism/polygon). No signup, no API key \u2014 pay USDC on Base.",
  "version": "0.1.0",
  "url": "https://mev-history-mcp.mtree.workers.dev",
  "documentation_url": "https://mev-history-mcp.mtree.workers.dev",
  "service_endpoint": "https://mev-history-mcp.mtree.workers.dev",
  "payment": {
    "scheme": "x402",
    "network": "base",
    "asset": "USDC"
  },
  "skills": [
    {
      "id": "mev_exposure",
      "name": "mev_exposure",
      "description": "Per-wallet MEV exposure score for an EVM address. Samples recent blocks, identifies the wallet's swap-related tx via known DEX router targets, and applies a block-position sandwich heuristic to each. Returns 0\u2013100 exposure score, sandwich count, swap count, and per-sandwich attacker/frontrun/backrun details.",
      "input_modes": [
        "application/json"
      ],
      "output_modes": [
        "application/json"
      ],
      "endpoint": "/v1/wallet/mev_exposure",
      "method": "POST",
      "price": "$0.30"
    },
    {
      "id": "sandwich_check",
      "name": "sandwich_check",
      "description": "Single-tx sandwich classifier. Takes a tx_hash + chain, fetches the tx + its block, and applies the block-position heuristic. Returns is_sandwiched + confidence (none/weak/medium/strong/confirmed) + attacker_addr + frontrun/backrun details.",
      "input_modes": [
        "application/json"
      ],
      "output_modes": [
        "application/json"
      ],
      "endpoint": "/v1/tx/sandwich_check",
      "method": "POST",
      "price": "$0.05"
    },
    {
      "id": "recent_mev_density",
      "name": "recent_mev_density",
      "description": "Pool-level recent MEV density. Takes a pool address + chain, fetches every log emitted by the pool in the lookback window, and runs the sandwich heuristic per tx. Returns sandwich_density (0.0\u20131.0), density_band, and sample sandwiches.",
      "input_modes": [
        "application/json"
      ],
      "output_modes": [
        "application/json"
      ],
      "endpoint": "/v1/pool/recent_mev_density",
      "method": "POST",
      "price": "$0.10"
    }
  ],
  "tags": [
    "x402",
    "blockchain-tooling",
    "evm",
    "base",
    "ethereum",
    "arbitrum",
    "optimism",
    "polygon",
    "mev",
    "sandwich",
    "history",
    "wallet",
    "dex",
    "mcp"
  ]
}