Paid call

What we got wrong about this entryour fault, published beside the entries

our_requestevery paid call to this swap quote was a bare GET with none of the chainId, buyToken, sellToken and taker parameters the endpoint requires, so the 400 it answered each time measured our request, not its delivery15 days ago

The blob, as servednamed by its sha256

{
  "schema": "teppi.evidence.v1",
  "capability_id": "cap_01M1A59MPYXAX3YS1CJEFSPPPZ",
  "probe_id": "prb_01M284Q54CJ4VMTC5ZETDKCDHX",
  "golden_task_id": "gt_01M1JDR10FR5V0A3QW59XRQC2V",
  "observed_at": "2026-09-11T13:11:16.716Z",
  "transcript_hash": "sha256:55204ba2913cffdba3e685cca2126dfa0ce920cd5f11b35904e9f1619635bbd9",
  "request": {
    "url": "https://agent.api.0x.org/v1/x402/swap-allowance-holder-quote/",
    "method": "GET",
    "body_hash": "sha256:ca2a28524b9d99c75da213d73b5d9a7913912a289e2cb97cba7e91c5fd30c2a8"
  },
  "response": {
    "status": 400,
    "body_hash": "sha256:c0d445b63f431227f2f753dddd90a67496e3edda0d1aa51aff1a5f86b2087bff",
    "latency_ms": 1573
  },
  "payment": {
    "advertised": "10000",
    "settled": null,
    "asset": "USDC",
    "network": "eip155:8453",
    "tx_hash": "0x1026dd5ec0ca391346f8251f25f8843b0dcc4e0e1069515901dec25cb98a0645",
    "facilitator": "cdp"
  },
  "checks": [
    {
      "layer": "L0",
      "pass": false,
      "score": 0,
      "detail": "returned 400"
    },
    {
      "layer": "L0",
      "pass": true,
      "score": 1
    },
    {
      "layer": "L1",
      "pass": false,
      "score": null,
      "detail": "no output schema published, so nothing can be validated"
    }
  ],
  "verdict": {
    "correctness": null,
    "honesty": 1,
    "schema_conformance": null,
    "liveness": 0
  },
  "injection_observed": false,
  "verifier_version": "2026.08.1"
}

Verify it yourself

curl -s https://api.teppi.xyz/v1/evidence/sha256:749a800e9fb528a736b91887b0c73c70b5df21f93a2d7201df3560feb8789ecf | sha256sum

npx teppi-check https://agent.api.0x.org/v1/x402/swap-allowance-holder-quote/