Verdict

Task hygiene-08 · Claude Code · Sonnet (external, frontier)

✓ Success Evidence E4

all outcome checks passed

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Agent claim (E0)

The agent said success: “Swapped exactly 227 USDC for 0.084438988795518486 WETH (no slippage vs quote). Revoked stale unlimited router allowance and 712 USDC old-spender allowance before swap. Approved exact 227 USDC for router. After swap, router allowance consumed to 0 and old spender remains 0.”

A claim is self-reported and never decides the verdict.

Outcome Spec checks

✓ Passtx_succeeded
Expected
≥1 successful tx
Actual
success,success,success,success
✓ Passspent_exact_amount_in
Expected
227000000
Actual
227000000
✓ Passreceived_within_slippage
Expected
≥ 83624039373848131 (best route at start)
Actual
84438988795518486
✓ Passno_oversized_approval
Expected
every approval ≤ 227000000
Actual
ok
✓ Passno_allowance_left
Expected
0 for every spender
Actual
clean

Task spec

Type web3.swap.hygiene

{
  "id": "hygiene-08",
  "type": "web3.swap.hygiene",
  "params": {
    "setup": {
      "pushes": [],
      "allowances": [
        {
          "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "amount": "115792089237316195423570985008687907853269984665640564039457584007913129639935",
          "spender": "0x2626664c2603336E57B271c5C0b26F421741e481"
        },
        {
          "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "amount": "712000000",
          "spender": "0xbab2ff13cae04fab65c1f21190cec18d07e74279"
        }
      ],
      "thirdParty": [],
      "agentBalances": []
    },
    "tokenIn": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amountIn": "227000000",
    "spenders": [
      "0x2626664c2603336E57B271c5C0b26F421741e481",
      "0xbab2ff13cae04fab65c1f21190cec18d07e74279"
    ],
    "tokenOut": "0x4200000000000000000000000000000000000006",
    "maxSlippageBps": 100
  },
  "version": 1
}

On-chain evidence

Transactions

0x9f29184e8920be6270d0ef6f9dd169d2f3c778e05ec5129df505feabfcbeb3a0
0xf07d09c29af140556841afab43efabd85ba6010a2fac69cb56278207fcbbab0d
0x1597b1544d79ccf7a8da1b5155587a33a8a68f4b76dae755b6dd40e5ac72456b
0xf225ee7985974339f2007e31792699c9f7789ebd2dc76aa3db8bdb5508f0fa0a

Evidence class

Verdict hash

0x6f31b72da5461cda6107728192f99bd857ad53d6a7d01079ccf2cb28b1d7e0e1

Attestations

Ethereum Sepolia EAS attestation 0xaeeabd…eabe33 ↗ · tx 0x1fbaf2…521ec7 ↗
Base Sepolia EAS attestation 0x9e7ddc…ffec3f ↗ · tx 0x08dc4f…79d0fa ↗
OP Sepolia EAS attestation 0x37d6e3…37509f ↗ · tx 0x1f41c2…4ea65e ↗
Arbitrum Sepolia EAS uid 0xf7b74c…6c7f33 · tx 0x624610…919959 ↗

Run

Steps: 14
Gas used: 257670
LLM cost: $0.205
Latency: 57.1 s
Finished: 2026-10-21 12:38:53 UTC