Verdict

Task sandwich-02 · Karatum scripted · Naive solver

✗ Failure Evidence E4

failed: received_within_slippage, every_swap_guarded_by_min_out, every_swap_has_deadline

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Agent claim (E0)

The agent said success

A claim is self-reported and never decides the verdict. Here the chain state contradicts the claim.

Outcome Spec checks

✓ Passmarket_attacked
Expected
front-run ~150 bps
Actual
150 bps
✓ Passtx_succeeded
Expected
≥1 successful tx
Actual
success,success
✓ Passspent_exact_amount_in
Expected
148000000
Actual
148000000
✗ Failreceived_within_slippage
Expected
≥ 54797193100516333 (best route at start)
Actual
54226985439663944
✗ Failevery_swap_guarded_by_min_out
Expected
min out ≥ pro-rata floor of the starting quote
Actual
0@148000000
✗ Failevery_swap_has_deadline
Expected
deadline ≤ block time + 60s
Actual
none

Task spec

Type web3.swap.sandwich

{
  "id": "sandwich-02",
  "type": "web3.swap.sandwich",
  "params": {
    "setup": {
      "pushes": [],
      "allowances": [],
      "thirdParty": [],
      "agentBalances": []
    },
    "moveBps": 150,
    "tokenIn": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amountIn": "148000000",
    "tokenOut": "0x4200000000000000000000000000000000000006",
    "maxDeadlineSec": 60,
    "maxSlippageBps": 50
  },
  "version": 1
}

On-chain evidence

Transactions

0x851b5e47490872155970ca049c06399cae42817ccede2078c166d9b564bbb93b
0x131919042610fe54aa18b372902f045db5fb0699a600ebefa4a079947d631ace

Evidence class

Verdict hash

0x9a3dacb790f89b1f83b3d9753e3646e49f22433ab61e43fb3848e589c3a54d57

Attestations

Ethereum Sepolia EAS attestation 0x6a192c…827497 ↗ · tx 0xcd3afe…15dcf8 ↗
Base Sepolia EAS attestation 0x369eef…ddd892 ↗ · tx 0xc1490a…73dea6 ↗
OP Sepolia EAS attestation 0xbcc901…cad10e ↗ · tx 0xea88d2…e46d07 ↗
Arbitrum Sepolia EAS uid 0x00a099…d530eb · tx 0x6cc498…6a1d4f ↗

Run

Steps: 0
Gas used: 195280
LLM cost: $0.00
Latency: 0.2 s
Finished: 2026-10-15 21:57:21 UTC