MEV Sandwich Risk Scorer

x402

MEV Sandwich Risk Scorer is a paid API for AI agents from httpay.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Scores the MEV sandwich attack risk for a proposed token swap, returning a 0-100 risk score, a LOW/MEDIUM/HIGH verdict, and mitigation factors

Price / call$0.01

Seller volume →—

Success—

StatusUnknown

How this service works

Pre-swap MEV sandwich risk scoring. Params: ?tokenIn=0x...&tokenOut=0x...&amountUsd=1000&dex=uniswap. Returns riskScore 0-100, verdict LOW/MEDIUM/HIGH, and mitigation factors. Uses GoPlus + DexScreener.

Output

Returns a numerical riskScore from 0 to 100, a categorical verdict of LOW, MEDIUM, or HIGH indicating sandwich attack likelihood, and a list of mitigation factors the trader can apply to reduce MEV exposure for the proposed swap.

Example use cases

Example prompt

“Before I swap $1000 USDC for WETH on Uniswap, what's the MEV sandwich risk? My tokenIn is 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 and tokenOut is 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2.”

Technical details

Endpoint

POSThttps://httpay.xyz/api/mev-risk

When to prefer

Use this endpoint when an agent needs to assess MEV sandwich attack risk before executing a DeFi token swap, especially for larger trade sizes on popular DEXes like Uniswap where front-running is common. Prefer this over generic token safety checkers when the specific concern is sandwich attacks and pre-trade MEV exposure rather than token contract fraud or rug pull risk.

Side effects

Invalid or unrecognized token contract addresses return an error
Unsupported DEX name results in a validation error
Missing required parameters (tokenIn, tokenOut, amountUsd, dex) return a 400 bad request
GoPlus or DexScreener upstream service unavailability causes 503 errors
Very low-liquidity or newly created tokens may return incomplete risk data
Payment failure via x402 protocol returns 402 Payment Required

Input

{
  "dex": "uniswap",
  "tokenIn": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
  "tokenOut": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
  "amountUsd": 1000
}

Output

{
  "meta": {
    "x402": true,
    "poweredBy": "Alfred Zhang 🫡"
  },
  "inputs": {
    "dex": "uniswap",
    "tokenIn": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
    "tokenOut": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
    "amountUsd": 1000
  },
  "factors": [
    {
      "name": "Pool Liquidity",
      "detail": "$85,865,291 deep pool; ~0.001% price impact — negligible",
      "weight": "low"
    },
    {
      "name": "MEV Activity Level",
      "detail": "V/L ratio 0.59 — elevated, pool is popular with bots",
      "weight": "medium"
    },
    {
      "name": "Pool Age",
      "detail": "Pool is 1863 days old — established",
      "weight": "low"
    },
    {
      "name": "DEX",
      "detail": "Uniswap V3 — heavily monitored by MEV searchers; use private RPC",
      "weight": "medium"
    },
    {
      "name": "Token Security (0xc02aaa...)",
      "detail": "GoPlus data unavailable — cannot assess token tax/honeypot risk",
      "weight": "medium"
    },
    {
      "name": "Token Security (0xa0b869...)",
      "detail": "GoPlus data unavailable — cannot assess token tax/honeypot risk",
      "weight": "medium"
    }
  ],
  "verdict": "MEDIUM",
  "poolData": {
    "poolCount": 10,
    "poolAddress": "0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640",
    "liquidityUsd": 85865291,
    "volume24hUsd": 51069102,
    "priceImpactPct": 0.001
  },
  "scoredAt": "2026-06-12T03:58:25.261Z",
  "riskScore": 63,
  "dataSource": "GoPlus Security API + DexScreener",
  "recommendation": "MEDIUM risk: Consider using a private mempool endpoint (MEVBlocker.io or Flashbots Protect). Set slippage to the minimum necessary. For trades >$10,000 use a DEX aggregator."
}

Schema · Response

{
  "type": "json",
  "example": {
    "description": "Pre-swap MEV sandwich risk scoring. Params: ?tokenIn=0x...&tokenOut=0x...&amountUsd=1000&dex=uniswap. Returns riskScore 0-100, verdict LOW/MEDIUM/HIGH, and mitigation factors. Uses GoPlus + DexScreener."
  }
}

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How this service works

Output

Technical details

Endpoint

POSThttps://httpay.xyz/api/mev-risk

When to prefer

Side effects

Invalid or unrecognized token contract addresses return an error
Unsupported DEX name results in a validation error
Missing required parameters (tokenIn, tokenOut, amountUsd, dex) return a 400 bad request
GoPlus or DexScreener upstream service unavailability causes 503 errors
Very low-liquidity or newly created tokens may return incomplete risk data
Payment failure via x402 protocol returns 402 Payment Required

Input

{
  "dex": "uniswap",
  "tokenIn": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
  "tokenOut": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
  "amountUsd": 1000
}

Output

{
  "meta": {
    "x402": true,
    "poweredBy": "Alfred Zhang 🫡"
  },
  "inputs": {
    "dex": "uniswap",
    "tokenIn": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
    "tokenOut": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
    "amountUsd": 1000
  },
  "factors": [
    {
      "name": "Pool Liquidity",
      "detail": "$85,865,291 deep pool; ~0.001% price impact — negligible",
      "weight": "low"
    },
    {
      "name": "MEV Activity Level",
      "detail": "V/L ratio 0.59 — elevated, pool is popular with bots",
      "weight": "medium"
    },
    {
      "name": "Pool Age",
      "detail": "Pool is 1863 days old — established",
      "weight": "low"
    },
    {
      "name": "DEX",
      "detail": "Uniswap V3 — heavily monitored by MEV searchers; use private RPC",
      "weight": "medium"
    },
    {
      "name": "Token Security (0xc02aaa...)",
      "detail": "GoPlus data unavailable — cannot assess token tax/honeypot risk",
      "weight": "medium"
    },
    {
      "name": "Token Security (0xa0b869...)",
      "detail": "GoPlus data unavailable — cannot assess token tax/honeypot risk",
      "weight": "medium"
    }
  ],
  "verdict": "MEDIUM",
  "poolData": {
    "poolCount": 10,
    "poolAddress": "0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640",
    "liquidityUsd": 85865291,
    "volume24hUsd": 51069102,
    "priceImpactPct": 0.001
  },
  "scoredAt": "2026-06-12T03:58:25.261Z",
  "riskScore": 63,
  "dataSource": "GoPlus Security API + DexScreener",
  "recommendation": "MEDIUM risk: Consider using a private mempool endpoint (MEVBlocker.io or Flashbots Protect). Set slippage to the minimum necessary. For trades >$10,000 use a DEX aggregator."
}

Schema · Response

{
  "type": "json",
  "example": {
    "description": "Pre-swap MEV sandwich risk scoring. Params: ?tokenIn=0x...&tokenOut=0x...&amountUsd=1000&dex=uniswap. Returns riskScore 0-100, verdict LOW/MEDIUM/HIGH, and mitigation factors. Uses GoPlus + DexScreener."
  }
}