Evidence row 123813

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://verdict.kechlab.com/v1/web-guard"
    ]
  ],
  "name": "Verdict L402",
  "owner_address": "0xb36c56a749f81ffeb44a134082dd4744e1d254eb",
  "raw": {
    "accepts": [
      {
        "amount": "21400",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xb36c56A749f81FFeb44a134082DD4744E1d254Eb",
        "scheme": "exact"
      }
    ],
    "description": "For agents that read web pages: finds what a human cannot see but an agent reads (HTML comments, CSS-hidden text, hidden attributes, invisible Unicode-encoded text) and tells whether those hidden instructions target an AI. Extraction by code, reading by the decision engine on the hidden text only. R",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "html": "<html><body><h1>Gardening tips</h1><p>Water your plants in the morning.</p><!-- last updated 2026-01-10 --></body></html>"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "mode": "web-guard",
              "paid_sats": 20,
              "payment_hash": "x402:<sha256 hex>",
              "receipt": {
                "payload": {
                  "at": "<ISO 8601 time>",
                  "kid": "<signing key id>",
                  "mode": "web-guard",
                  "payment_hash": "x402:<sha256 hex>",
                  "v": 1,
                  "verdict_sha256": "<sha256 hex of the verdict>"
                },
                "signature": "<base64url Ed25519 signature>"
              },
              "verdict": {
                "decision": "allow",
                "hidden_found": [
                  {
                    "text": "last updated 2026-01-10",
                    "where": "html_comment"
                  }
                ],
                "reasons": [],
                "rule": "block if hidden text aimed at an AI >= 0.6, invisible Unicode instructions, hidden data-sending request >= 0.7 or visible text >= 0.8 ; review if a hint >= 0.3 to 0.4 or zero-width characters ; otherwise allow",
                "scores": {
                  "hidden_addresses_ai": 0.02,
                  "hidden_exfiltration": 0.01,
                  "visible_injection": 0.01
                },
                "visible_chars": 48
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "html": {
                      "description": "the HTML of the page (400 KB maximum)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "html"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-20T13:32:50.274Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-20T13:32:49.405Z"
    },
    "resource": "https://verdict.kechlab.com/v1/web-guard",
    "serviceName": "Verdict L402",
    "tags": [
      "web",
      "prompt-injection",
      "ai-agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "For agents that read web pages: finds what a human cannot see but an agent reads (HTML comments, CSS-hidden text, hidden attributes, invisible Unicode-encoded text) and tells whether those hidden instructions target an AI. Extraction by code, reading by the decision engine on the hidden text only. R"
}

What the leaf hashes

{"body":"029217da5cdf3db8b169ca444a1f6027a280540fcb628ba1089d68739608a9b1","id":123813,"kind":"listing","method":"baseline/1","observed_us":1793025623742789,"prev":null,"subject":"x402_bazaar:https://verdict.kechlab.com/v1/web-guard","subject_kind":"source_record"}

Proof

Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.