Sec-Webhook-Signature-Missing

The model receives the prompt (and optional system message). The run uses scorer rubric_json_metrics with the JSON configuration below. Pass/fail and partial credit are determined entirely by that scorer against the model output; no human grading.

Return JSON only with keys verdict, risk, mitigation. A payment webhook handler trusts JSON payloads without verifying a provider signature or timestamp.

{
  "metrics": {
    "correct": {
      "checks": [
        {
          "contains": [
            "webhook"
          ]
        },
        {
          "contains": [
            "signature"
          ]
        },
        {
          "contains": [
            "payment"
          ]
        }
      ]
    },
    "hidden": {
      "checks": [
        {
          "contains": [
            "timestamp"
          ]
        },
        {
          "contains": [
            "replay"
          ]
        },
        {
          "contains": [
            "verify"
          ]
        }
      ]
    }
  }
}