Evidence row 258590

What was observed

{
  "count": 18,
  "tools": [
    {
      "description": "Creates a space for one capture. An account that does not pay for hosting yet gets its first space as a free private preview: upload and process it with no payment. After that, it returns a Stripe Checkout link for the plan the person chose (pay as you go when none is given) for them to pay; then call wait_for_payment. Never ask for card details.",
      "inputSchema": {
        "properties": {
          "plan": {
            "description": "Optional plan name or ID from list_plans.",
            "type": "string"
          },
          "title": {
            "description": "Title of the space, 1 to 200 characters.",
            "type": "string"
          }
        },
        "required": [
          "title"
        ],
        "type": "object"
      },
      "name": "create_space"
    },
    {
      "description": "Starts a private guided tour or scavenger hunt on a space from find_tour_spaces; fill it with draft_tour or save_tour.",
      "inputSchema": {
        "properties": {
          "kind": {
            "enum": [
              "tour",
              "hunt"
            ],
            "type": "string"
          },
          "scene_id": {
            "description": "The sceneId from find_tour_spaces.",
            "type": "string"
          },
          "title": {
            "type": "string"
          }
        },
        "required": [
          "scene_id"
        ],
        "type": "object"
      },
      "name": "create_tour"
    },
    {
      "description": "Asks the site's tour agent, which sees the space's photographs, to write or rework the tour from a plain request: stops and text, hidden objects and clues, library models, effects, sound, music, looks with transitions and skies (day, sunset, storm, night, stars). It places everything and saves. Returns at once; then call wait_for_tour.",
      "inputSchema": {
        "properties": {
          "request": {
            "type": "string"
          },
          "tour_id": {
            "description": "The tour ID (12 hexadecimal characters) from create_tour or list_tours.",
            "type": "string"
          }
        },
        "required": [
          "tour_id",
          "request"
        ],
        "type": "object"
      },
      "name": "draft_tour"
    },
    {
      "description": "Spaces a guided tour or scavenger hunt can be built on: the person's own finished spaces and the site's public spaces (museums, temples, tombs, gardens). Search by words in the title.",
      "inputSchema": {
        "properties": {
          "query": {
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "find_tour_spaces"
    },
    {
      "description": "Checks that every uploaded file is complete and submits the space for processing. The account is emailed when the space is ready.",
      "inputSchema": {
        "properties": {
          "notes": {
            "description": "Optional notes for processing, such as what the capture is or how the tour should go.",
            "type": "string"
          },
          "output": {
            "description": "What to build: \"splat\", a 3DGS (3D Gaussian splat) visitors move through freely (the default for photos, video and 360 captures); \"tour\", a guided tour of 360 panoramas (the default for E57 scans); or \"auto\" to use those defaults. Set it only when the person asks for one.",
            "enum": [
              "splat",
              "tour",
              "auto"
            ],
            "type": "string"
          },
          "space_id": {
            "description": "The space ID (12 hexadecimal characters) from create_space or space_status.",
            "type": "string"
          },
          "submit": {
            "description": "Defaults to true.",
            "type": "boolean"
          }
        },
        "required": [
          "space_id"
        ],
        "type": "object"
      },
      "name": "finish_upload"
    },
    {
      "description": "The tour as JSON (stops, objects, effects, looks, skies) with its revision, for editing with save_tour.",
      "inputSchema": {
        "properties": {
          "tour_id": {
            "description": "The tour ID (12 hexadecimal characters) from create_tour or list_tours.",
            "type": "string"
          }
        },
        "required": [
          "tour_id"
        ],
        "type": "object"
      },
      "name": "get_tour"
    },
    {
      "description": "Links this agent to the person's account. Returns a link where the person signs in and approves a short code; call again once they have. Never ask for a password.",
      "inputSchema": {
        "properties": {
          "link_code": {
            "description": "Only for connections without a session, the link_code from the previous call.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "link_account"
    },
    {
      "description": "The ways to pay for hosting, with prices, and the account's current plan. The first space is a free private preview, so show them when the person wants to publish it or keep it.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "list_plans"
    },
    {
      "description": "The tours and scavenger hunts on the account, with their links.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "list_tours"
    },
    {
      "description": "Saves a tour edited by hand: the experience JSON from get_tour with changes. Models use a url from search_models, or any https address of a .glb.",
      "inputSchema": {
        "properties": {
          "experience": {
            "type": "object"
          },
          "title": {
            "type": "string"
          },
          "tour_id": {
            "description": "The tour ID (12 hexadecimal characters) from create_tour or list_tours.",
            "type": "string"
          }
        },
        "required": [
          "tour_id",
          "experience"
        ],
        "type": "object"
      },
      "name": "save_tour"
    },
    {
      "description": "Searches the library of ready-made 3D models (statues, amphorae, temples, furniture, animals, props from many periods). Returns each model's size and url.",
      "inputSchema": {
        "properties": {
          "limit": {
            "type": "number"
          },
          "query": {
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_models"
    },
    {
      "description": "Makes a ready space public (anyone with the link) or private (only the owner). Ask the person first. A free preview cannot be public until hosting starts, so it returns a Stripe Checkout link for the person to pay.",
      "inputSchema": {
        "properties": {
          "public": {
            "type": "boolean"
          },
          "space_id": {
            "description": "The space ID (12 hexadecimal characters) from create_space or space_status.",
            "type": "string"
          }
        },
        "required": [
          "space_id",
          "public"
        ],
        "type": "object"
      },
      "name": "set_visibility"
    },
    {
      "description": "Makes a tour public (anyone with its link, never listed) or private, and optionally renames it. Ask the person first.",
      "inputSchema": {
        "properties": {
          "public": {
            "type": "boolean"
          },
          "title": {
            "type": "string"
          },
          "tour_id": {
            "description": "The tour ID (12 hexadecimal characters) from create_tour or list_tours.",
            "type": "string"
          }
        },
        "required": [
          "tour_id"
        ],
        "type": "object"
      },
      "name": "share_tour"
    },
    {
      "description": "Status of one space, or every space on the account with its link when ready.",
      "inputSchema": {
        "properties": {
          "space_id": {
            "description": "The space ID (12 hexadecimal characters) from create_space or space_status.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "space_status"
    },
    {
      "description": "Unlinks this agent from the account.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "unlink_account"
    },
    {
      "description": "Starts resumable uploads for capture files you hold (for example photos or video the person shared with you) and returns where to PUT each file's bytes. For files on the person's own device, give them the space's page to drop the files instead.",
      "inputSchema": {
        "properties": {
          "files": {
            "items": {
              "properties": {
                "name": {
                  "type": "string"
                },
                "size": {
                  "description": "Size in bytes.",
                  "type": "integer"
                },
                "type": {
                  "description": "Optional MIME type.",
                  "type": "string"
                }
              },
              "required": [
                "name",
                "size"
              ],
              "type": "object"
            },
            "type": "array"
          },
          "space_id": {
            "description": "The space ID (12 hexadecimal characters) from create_space or space_status.",
            "type": "string"
          }
        },
        "required": [
          "space_id",
          "files"
        ],
        "type": "object"
      },
      "name": "upload_files"
    },
    {
      "description": "Waits up to 25 seconds for the person to finish paying in Stripe Checkout, whether for a space's first payment or to publish a free preview. Call it again to keep waiting.",
      "inputSchema": {
        "properties": {
          "space_id": {
            "description": "The space ID (12 hexadecimal characters) from create_space or space_status.",
            "type": "string"
          }
        },
        "required": [
          "space_id"
        ],
        "type": "object"
      },
      "name": "wait_for_payment"
    },
    {
      "description": "Waits up to 25 seconds for a draft to finish, then summarizes the tour. Call it again to keep waiting.",
      "inputSchema": {
        "properties": {
          "tour_id": {
            "description": "The tour ID (12 hexadecimal characters) from create_tour or list_tours.",
            "type": "string"
          }
        },
        "required": [
          "tour_id"
        ],
        "type": "object"
      },
      "name": "wait_for_tour"
    }
  ]
}

What the leaf hashes

{"body":"a1ba3220e38b73c501d4a78fe0c5dc81f0755907a4771138d075084df4f19392","id":258590,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793030262321101,"prev":null,"subject":"637245ae-7770-4d46-97c2-d6a3a970803e","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x0034e118222c0fe5804eeaa6b5dc76902b2b9c4537074a22893f81b57a24fd86
2. 0xb4aef380dadf6845e0a213087be6056e978d36a73d45ee132a5adb92f44e86df
3. 0xb6cad624132f853d9e18a7778a11525ca5851ebbf9ac7d286089569a903dddfd
4. 0xb85b249fd3544fb0c1d9f5b052485d7effb1aba4c246b15df35dfaa58a8c6a84
5. 0x04889bbc3db54857cb0162b74c82615a7c50b26afa354c7a92c0b2d461f9df4d
6. 0x51e32dc293d13d947d62477bfb5229e54258557407104f2d83fec3f11a408812
7. 0x217d2f317cca14f374a35e4e1632d77cc896e8701d9da49db56d15bdc5fc5ef0
8. 0xbfe9c304a2ecf6f16e4026f06ad799f1e295d3514e9119fcc93d24a13034f7f8
9. 0xfd9f488e45162cafec2898fe543c0fb72e38fded6996eb835ad77e104e4607df
10. 0x7094d92de7a12bcbbda85e50fc32f691417f03c7bbec9f4fd2cd0dd2d72f4104
11. 0x27552701eb5162e9111d06653c360295d04e5cdfe261fe843f9c0fb27ab44c3b
12. 0x9d52e830c7a3480876eca1592c3b5c4a56ee3a8c6fdd4e37c57710b7654e36c7
13. 0x92ff7d176556ddbe3d885e2ab73948b14a6aa3568a8fd237427d4f8415235a23
14. 0xd1d3499072edb10edc68f84bcae2365d2ab534df689250cab18c751b6f13b6ff
15. 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae