Evidence row 572485

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Create a deterministic, read-only pre-action receipt from request, policy, and optional result evidence. Use before an agent posts, spends, lists, or writes so the decision can be audited; no external action is executed.",
      "inputSchema": {
        "additionalProperties": true,
        "properties": {
          "nextStep": {
            "description": "Optional guidance stored in the receipt.",
            "type": "string"
          },
          "policy": {
            "description": "Decision object, e.g. allow/retry/review/block and reason.",
            "type": "object"
          },
          "request": {
            "description": "Action metadata the agent is about to perform.",
            "type": "object"
          },
          "result": {
            "description": "Optional result or dry-run summary to hash into evidence.",
            "type": "object"
          }
        },
        "required": [
          "request"
        ],
        "type": "object"
      },
      "name": "boundary_guard_check"
    },
    {
      "description": "GateCheck readiness: check whether an x402/agent-facing tool is ready for agent routing, marketplace listing, and paid-path monitoring, including public agent discovery surfaces (/llms.txt, /agents.txt, /.well-known/mcp.json, /mcp). Pass target plus optional tier, marketplace_url, expected_resources, and paid_path; deep/report tiers add unpaid 402 probing when paid_path is supplied. Tiers: quick $1, deep $5, report $10.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "expected": {
            "additionalProperties": true,
            "description": "Optional expected x402 network/asset/price metadata for paid_path probes.",
            "type": "object"
          },
          "expected_resources": {
            "description": "Optional expected resource count.",
            "type": "integer"
          },
          "marketplace_url": {
            "description": "Optional marketplace/listing URL to compare against public metadata.",
            "type": "string"
          },
          "method": {
            "description": "Safe unpaid probe method when paid_path is supplied. Defaults to GET.",
            "enum": [
              "GET",
              "HEAD",
              "OPTIONS"
            ],
            "type": "string"
          },
          "paid_path": {
            "description": "Optional specific paid endpoint to probe without payment for deep/report tiers.",
            "type": "string"
          },
          "target": {
            "description": "Target API/provider base URL to scan.",
            "type": "string"
          },
          "tier": {
            "description": "Readiness depth. quick=$1, deep=$5, report=$10. Defaults to quick.",
            "enum": [
              "quick",
              "deep",
              "report"
            ],
            "type": "string"
          }
        },
        "required": [
          "target"
        ],
        "type": "object"
      },
      "name": "check_agent_tool_readiness"
    },
    {
      "description": "Generate a deterministic trust receipt from sanitized request/policy/result/payment summaries. Do not submit raw auth headers, cookies, API keys, private keys, payment signatures, payment response headers, customer prompts, customer documents, or payer-identifying evidence.",
      "inputSchema": {
        "additionalProperties": true,
        "properties": {
          "nextStep": {
            "description": "Optional receipt next-step guidance.",
            "type": "string"
          },
          "payment": {
            "description": "Optional sanitized payment summary or caller-provided hashes only; do not include raw payment signatures, raw payment response headers, private keys, API keys, cookies, payer-identifying evidence, or wallet secrets.",
            "type": "object"
          },
          "policy": {
            "description": "Sanitized policy or decision summary to hash.",
            "type": "object"
          },
          "request": {
            "description": "Sanitized request/action summary to hash; omit raw prompts, documents, credentials, cookies, auth headers, signatures, and secrets.",
            "type": "object"
          },
          "result": {
            "description": "Sanitized outcome/result summary to hash; omit customer data and secret-like values.",
            "type": "object"
          }
        },
        "required": [
          "request"
        ],
        "type": "object"
      },
      "name": "generate_trust_receipt"
    },
    {
      "description": "Generate marketplace-safe launch assets for an x402/MCP seller: listing copy, buyer FAQ, checklist, approval packet, and claim boundaries. Pass target plus optional product_name, audience, primary_use_case, marketplace_url, and paid_path; service/premium tiers include readiness evidence. Tiers: single $9, service $29, premium $49.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "audience": {
            "description": "Primary buyer/audience for listing copy.",
            "type": "string"
          },
          "desired_marketplaces": {
            "description": "Optional marketplace names to include in launch planning.",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "expected": {
            "additionalProperties": true,
            "description": "Optional expected x402 network/asset/price metadata for paid_path probes.",
            "type": "object"
          },
          "expected_resources": {
            "description": "Optional expected resource count.",
            "type": "integer"
          },
          "marketplace_url": {
            "description": "Optional marketplace/listing URL to compare against public metadata.",
            "type": "string"
          },
          "method": {
            "description": "Safe unpaid probe method when paid_path is supplied. Defaults to GET.",
            "enum": [
              "GET",
              "HEAD",
              "OPTIONS"
            ],
            "type": "string"
          },
          "paid_path": {
            "description": "Optional paid endpoint to validate via unpaid 402 challenge for service/premium packs.",
            "type": "string"
          },
          "primary_use_case": {
            "description": "Primary buyer outcome/use case.",
            "type": "string"
          },
          "product_name": {
            "description": "Buyer-facing product title.",
            "type": "string"
          },
          "target": {
            "description": "Target API/provider base URL to package for launch.",
            "type": "string"
          },
          "tier": {
            "description": "Launch pack depth. single=$9, service=$29, premium=$49. Defaults to single.",
            "enum": [
              "single",
              "service",
              "premium"
            ],
            "type": "string"
          }
        },
        "required": [
          "target"
        ],
        "type": "object"
      },
      "name": "generate_x402_launch_pack"
    },
    {
      "description": "Probe a public x402 paid endpoint without signing or paying, then parse the HTTP 402 challenge. Pass target plus optional expected network/asset/price to verify payment metadata and receive a deterministic health receipt.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "expected": {
            "additionalProperties": true,
            "description": "Optional expected x402 metadata such as network, asset, and priceUsd.",
            "properties": {
              "asset": {
                "type": "string"
              },
              "network": {
                "type": "string"
              },
              "priceUsd": {
                "type": "string"
              }
            },
            "type": "object"
          },
          "method": {
            "description": "Safe unpaid probe method. Defaults to GET.",
            "enum": [
              "GET",
              "HEAD",
              "OPTIONS"
            ],
            "type": "string"
          },
          "mode": {
            "description": "Probe mode for v1. Defaults to unpaid_402.",
            "enum": [
              "unpaid_402",
              "metadata_only"
            ],
            "type": "string"
          },
          "target": {
            "description": "Specific paid endpoint URL to probe without payment.",
            "type": "string"
          }
        },
        "required": [
          "target"
        ],
        "type": "object"
      },
      "name": "probe_x402_paid_path"
    },
    {
      "description": "Read-only scan of a public API/provider URL for x402, OpenAPI, pricing, and agent-discovery metadata. Pass url, and optionally marketplace_url plus expected_resources, to get a readiness score, issues, and fixes; no private endpoints are called.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "expected_resources": {
            "description": "Optional expected resource count.",
            "type": "integer"
          },
          "marketplace_url": {
            "description": "Optional marketplace/listing URL to compare against public metadata.",
            "type": "string"
          },
          "url": {
            "description": "Target API/provider base URL to scan.",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "scan_x402_resource"
    }
  ]
}

What the leaf hashes

{"body":"1e60024d87ff98a2b8202ccc4aa73cce5232187ea196c73f89ad3d3f0c91d6dc","id":572485,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793140740051802,"prev":null,"subject":"3aea36a1-4bd5-445e-87a4-cb1d21e28d36","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x4d5bdd7956f208061da21f664c62ccf7a7848b81a5019371f6c49326b46dafe4
2. 0xe6d194a65cd9310e5eadd2649376f0038046e3fd80c7d78be0610a4f85bfa88b
3. 0xfab8f59cb9a9b85270ed48755a8b9c3a8fceb2a8bb9accd3680dc4b45a530bd8
4. 0xbe2d74daf43f5d0bfd11f727bdd4d2ee0be653f1170d57f240ba7707f7432b27
5. 0xe79ece3e0c226bf88f9f18e889b4c34a40c01e85a9852b90831f9f8c5b18b31c
6. 0x4192757ea6d7b5b3090adfda5a945224332fc96a34320b4b5bda8188d80534c5
7. 0x4cd638fa54874b51fcc31b37cf3953b65c8e056f2bc660338bf28dfd20778a21
8. 0xe38a4009781ca6288fa0aa57579aedb23fe587ca0d63f0811367779be5c44396
9. 0x3811164146559bfa0686efbe968aa5d5632791b5e52940b748f9faae3d9675e5
10. 0x9305fa39c0bfbf15674949ab145ca0a40479400bedc3333826053de29a32e9ef
11. 0x699e1831216ceb5d0324397f8f4f58989765f950328c8adcbcb3a202d688993c
12. 0xf9b21ec258212225fc012a1ed6399d0ec608e930f4423d2badb8be79550861ef
13. 0x797da99476c7ebaa971607ae725e5e240b79de9e49d28859b94de107c850aaab
14. 0x9ea0c6a53f80a30b6f13671109f98a000cf98e581875129f4be4b57131d06364
15. 0xb78ea6a255dd06e2f402a1a733bca392fa6243920bcba95e8b80bdfc6ce5f553
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4