Evidence row 1192925

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 session's machine, newest first; by default its environment's own, such as a browser's downloads.\n\n``session_id`` is the id ``run_agent`` returns, or an env-manager session id.\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": {
            "anyOf": [
              {
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null
          },
          "session_id": {
            "type": "string"
          }
        },
        "required": [
          "session_id"
        ],
        "type": "object"
      },
      "name": "list_files"
    },
    {
      "description": "Read a file from a session's machine; returns base64 content and metadata.\n\n``session_id`` is the id ``run_agent`` returns, or an env-manager session id.",
      "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 session's machine.\n\n``session_id`` is the id ``run_agent`` returns, or an env-manager session id.",
      "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":"8115c664a4c169d21d0aecc899db98dd57b7ed974f66f5536ddc947a45bae82f","id":1192925,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793319517717726,"prev":222015,"subject":"dc271147-7fb0-40c7-9825-e8ca5f172e60","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-30 (243099 rows).

1. 0x5de4da258fdf80d4f0638d6aec29fb2350edb7a0ec58323b97648d8696c9abe2
2. 0x5beccd29918a02ea3b7c9025e9d3f24fda482f20eb943a4c80397610639ed247
3. 0x1e7d9da2bf44606a6fbf67a5ea5f274bf35a19d66f62c518651b4e4b793bd461
4. 0x62b25a4def09851b581df3db628ca2bc11c9b8bfc1eb61db5ee56a8ec58b8c65
5. 0xf39a8d2c41550dd0feba07594479b75319f73ff92b00bde352b8b7fee4446664
6. 0xf2e00a8ad2d3c07fa45de287b6a279f81b5149b2c5409cef5ac16b3eea841db4
7. 0x79b1d385407095054b81525fcaa478478d81a4811e9a3e23607eae61293ba3be
8. 0xa2a55475b4017b474cdd16ca92b3bd21faf29184c920dfdb42f9a3caabe68344
9. 0x016025ad9fc63430f5db8c6433b0b38a60b8c87e7dc9a1bdea0c0932f50789e1
10. 0x7e915a10b5b64aa666a5568ac92d25a6f85e318ba7ab6b968c299de9f60c57f5
11. 0x23d4628fd807364cdd8cd9d4e2f97f9e771474e7a189691befcea967926ac237
12. 0xfa94159aef5b12f68a3f63d2d1da407c046b506ea4ce39470d2b54413432c727
13. 0xe40462ac4be9e0733d302c0e0df3c848b765843b82a83461994f72406640846f
14. 0xd036f65644c5bb700403844636b74b07a0ecb42fea108fce98c04207855ccb3e
15. 0x7ecc532de10b728de98de2eb2a81fbd8da2254ff32b38b6ffde14af9964fc470
16. 0x910a91495535ac1a9e959d27d607e185616d2d41b45bc7071c6357f426f372d8
17. 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861