Evidence row 222006

What was observed

{
  "count": 9,
  "tools": [
    {
      "description": "Cancel a session; a no-op if it does not exist or already finished.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "session_id"
        ],
        "type": "object"
      },
      "name": "cancel_session"
    },
    {
      "description": "List agents the caller can run: their org's agents plus the public ``h/`` ones.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "page": {
            "default": 1,
            "type": "integer"
          },
          "size": {
            "default": 20,
            "type": "integer"
          }
        },
        "type": "object"
      },
      "name": "list_agents"
    },
    {
      "description": "List files on a browser session's machine (e.g. downloads), newest first.\n\n``session_id`` is the browser session id issued by env-manager when the session was\ncreated, not the id ``run_agent`` returns.\n\nWhen a listing is truncated, page on the last entry's modified_at (ISO-8601)\nand name, passed as modified_before and name_after. Send both: modification\ntimes are not unique, and a timestamp alone skips the rest of a tied group.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "max_entries": {
            "default": 500,
            "type": "integer"
          },
          "modified_before": {
            "anyOf": [
              {
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null
          },
          "name_after": {
            "anyOf": [
              {
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null
          },
          "path": {
            "default": "~/Downloads",
            "type": "string"
          },
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "session_id"
        ],
        "type": "object"
      },
      "name": "list_files"
    },
    {
      "description": "Read a file from a browser session's machine; returns base64 content and metadata.\n\n``session_id`` is the browser session id issued by env-manager when the session was\ncreated, not the id ``run_agent`` returns.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "path": {
            "type": "string"
          },
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "session_id",
          "path"
        ],
        "type": "object"
      },
      "name": "read_file"
    },
    {
      "description": "Start an agent on a task; return the answer or a session handle to wait on.\n\n``agent`` is a name from list_agents, which runs its latest revision, or ``name:N`` to run revision N.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "agent": {
            "type": "string"
          },
          "idempotency_key": {
            "anyOf": [
              {
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null
          },
          "max_steps": {
            "anyOf": [
              {
                "type": "integer"
              },
              {
                "type": "null"
              }
            ],
            "default": null
          },
          "max_time_s": {
            "anyOf": [
              {
                "type": "number"
              },
              {
                "type": "null"
              }
            ],
            "default": null
          },
          "task": {
            "type": "string"
          }
        },
        "required": [
          "task",
          "agent"
        ],
        "type": "object"
      },
      "name": "run_agent"
    },
    {
      "description": "Send a follow-up message to a running session.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "message": {
            "type": "string"
          },
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "session_id",
          "message"
        ],
        "type": "object"
      },
      "name": "send_message"
    },
    {
      "description": "Make a session publicly readable and return its absolute share URL.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "session_id"
        ],
        "type": "object"
      },
      "name": "share_session"
    },
    {
      "description": "Poll a session: with ``wait`` long-poll for the answer, else return the current snapshot.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "session_id": {
            "type": "string"
          },
          "wait": {
            "default": true,
            "type": "boolean"
          }
        },
        "required": [
          "session_id"
        ],
        "type": "object"
      },
      "name": "wait_for_session"
    },
    {
      "description": "Write base64-encoded content to a file on a browser session's machine.\n\n``session_id`` is the browser session id issued by env-manager when the session was\ncreated, not the id ``run_agent`` returns.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "content_base64": {
            "type": "string"
          },
          "path": {
            "type": "string"
          },
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "session_id",
          "path",
          "content_base64"
        ],
        "type": "object"
      },
      "name": "write_file"
    }
  ]
}

What the leaf hashes

{"body":"264eb1e229f948ab58019dcbf55bcb98056c50b525de1c28784bf3b73211a32b","id":222006,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793027753857279,"prev":null,"subject":"c36b3037-174a-4835-a9d1-266d701f869c","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. 0xb6131c5f6a7bb74ffd0f974ae3f3e682aa380b06732679c35c5bd7c37bce0d59
2. 0xd807f4e87f88b3b5a5e6dd330d8e128aa8f744229ff92c99e876e1e9c734d0e0
3. 0xe5c40697528ac43ab2113ea02e6081285cb285989ff18c5bc03c5ef8b58133bf
4. 0x2ad2967143a959a1c17d36786bc86d0b011bb53b02c2fa316b91dede3b63b1e0
5. 0x3058ac0ed36f4616e771e7d51104f2ef28b40fcc293bce7280f54219724cf6be
6. 0x46ab7825b518c52aa8e5af63ff61b883a3db8447e814dc7e65639124e52c4297
7. 0x22bb7d9d485e6029aec5743c05e9af8074cb7f4609f30ee518276e5cdacde800
8. 0xdbf98781c1f0eecfdedf54f895e818e26aa046e393a175ebc6273b46409f240f
9. 0x8633a5cda531755faba1277f7dacbebfe7efbff11aa341081a1370d3c2506667
10. 0x083b213d55f010a12e9f2c7182db3d2a36f1323ef61111ababe982fa9f8e6726
11. 0xfa91c460bb9b05b6890b46e5326a89c9e487b6419bd4d84337c05040222a2e6c
12. 0x17930d484cab3f6850715eb0b77dd189c3c06f975cf9def12285fde3eb9b4234
13. 0x0d86419ca1dd0b62fd8b22ea2e8c74d441312cec3116a467bea429b43e026565
14. 0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae