Evidence row 292573

What was observed

{
  "count": 10,
  "tools": [
    {
      "description": "Issue a credit note against an invoice, or standalone: the recipient, the reason (returned goods, overcharge, discount correction, service issue, other), line items with quantity, unit price and tax rate, and the currency. Returns a draft you can still revise; credit_note_finalize burns the final CN number.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "currency": {
            "description": "ISO code the credit is in",
            "pattern": "^[A-Za-z]{3}$",
            "type": "string"
          },
          "duplicate_ok": {
            "description": "Create it even though an identical draft or note exists, for a genuinely repeated credit. Default false",
            "type": "boolean"
          },
          "invoice_ref": {
            "description": "The invoice this credits, e.g. INV-2026-0042. Omit for a standalone credit",
            "maxLength": 200,
            "type": "string"
          },
          "issue_date": {
            "description": "The date the credit is issued, YYYY-MM-DD. Default today; a future date is refused",
            "maxLength": 10,
            "type": "string"
          },
          "lines": {
            "description": "What is being credited, line by line",
            "items": {
              "additionalProperties": false,
              "properties": {
                "description": {
                  "description": "What is being credited, e.g. Returned: 3 x USB-C cable",
                  "maxLength": 500,
                  "type": "string"
                },
                "quantity": {
                  "description": "How many, e.g. 3 or 2.5 hours",
                  "exclusiveMinimum": 0,
                  "maximum": 1000000,
                  "type": "number"
                },
                "tax_rate": {
                  "description": "Tax rate in percent, e.g. 23 for 23%. Default 0",
                  "maximum": 100,
                  "minimum": 0,
                  "type": "number"
                },
                "unit_price_minor": {
                  "description": "Unit price in whole minor units (integer cents). 10420 is EUR 104.20",
                  "maximum": 100000000000000,
                  "minimum": 0,
                  "type": "integer"
                }
              },
              "required": [
                "description",
                "quantity",
                "unit_price_minor"
              ],
              "type": "object"
            },
            "maxItems": 100,
            "minItems": 1,
            "type": "array"
          },
          "notes": {
            "description": "Text printed at the foot of the document, e.g. how the credit will be settled",
            "maxLength": 2000,
            "type": "string"
          },
          "reason": {
            "description": "Why the credit is issued: returned_goods, overcharge, discount_correction, service_issue or other",
            "enum": [
              "returned_goods",
              "overcharge",
              "discount_correction",
              "service_issue",
              "other"
            ],
            "type": "string"
          },
          "reason_detail": {
            "description": "One line of specifics, e.g. Client was billed 10 seats, used 7",
            "maxLength": 200,
            "type": "string"
          },
          "recipient": {
            "description": "Who the credit is for, e.g. Acme GmbH",
            "maxLength": 200,
            "type": "string"
          }
        },
        "required": [
          "recipient",
          "reason",
          "currency",
          "lines"
        ],
        "type": "object"
      },
      "name": "credit_note_create"
    },
    {
      "description": "Delete a draft credit note entered wrongly, by its draft id. A finalized note is refused by name: it is a document the client may have seen, and deleting it would leave their copy pointing at nothing.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "id": {
            "description": "The draft id, e.g. CN-DRAFT-2026-0001",
            "maxLength": 200,
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "credit_note_delete"
    },
    {
      "description": "Finalize a draft: burn the final CN-YYYY-NNNN number and freeze the note. From here it cannot be edited or deleted, only rendered and listed, because it is now the document the client sees. Free tier: 10 finalized credit notes; Pro removes the limit.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "id": {
            "description": "The draft id, e.g. CN-DRAFT-2026-0001",
            "maxLength": 200,
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "credit_note_finalize"
    },
    {
      "description": "Return one credit note by its CN number or draft id: every line with quantity, unit price and tax, the totals per tax rate, the reason, the invoice it credits, and the notes. Reads only; use credit_note_list for the ids.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "id": {
            "description": "The credit note number CN-2026-0001 or draft id CN-DRAFT-2026-0001",
            "maxLength": 200,
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "credit_note_get"
    },
    {
      "description": "List credit notes: number or draft id, recipient, reason, status, issue date and total. Filter by recipient (a part of the name is enough), by reason, by status draft or final, and by issue-date period with from and to.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "from": {
            "description": "First issue date to include, YYYY-MM-DD",
            "maxLength": 10,
            "type": "string"
          },
          "limit": {
            "description": "Maximum notes listed, default and ceiling 2000",
            "maximum": 2000,
            "minimum": 1,
            "type": "integer"
          },
          "reason": {
            "description": "Only notes with this reason",
            "enum": [
              "returned_goods",
              "overcharge",
              "discount_correction",
              "service_issue",
              "other"
            ],
            "type": "string"
          },
          "recipient": {
            "description": "Match the recipient, case-insensitive, a part of the name is enough",
            "maxLength": 200,
            "type": "string"
          },
          "status": {
            "description": "Only drafts or only finalized notes",
            "enum": [
              "draft",
              "final"
            ],
            "type": "string"
          },
          "to": {
            "description": "Last issue date to include, YYYY-MM-DD",
            "maxLength": 10,
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "credit_note_list"
    },
    {
      "description": "Turn a credit note into the document: Markdown to paste into an email or ticket, or a self-contained printable HTML page with every style inline. Drafts render with a DRAFT banner so a half-finished credit cannot be sent by mistake. Writes nothing. Free; the free tier stamps a one-line footer.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "format": {
            "description": "markdown (default) or html, a self-contained printable page",
            "enum": [
              "markdown",
              "html"
            ],
            "type": "string"
          },
          "id": {
            "description": "The credit note number CN-2026-0001 or draft id CN-DRAFT-2026-0001",
            "maxLength": 200,
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "credit_note_render"
    },
    {
      "description": "How much you have credited: totals per currency over finalized credit notes, broken down by reason and by month, in an optional issue-date period. Drafts count for nothing until they are finalized. Currencies are never added together.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "from": {
            "description": "First issue date to include, YYYY-MM-DD. Default: the beginning",
            "maxLength": 10,
            "type": "string"
          },
          "to": {
            "description": "Last issue date to include, YYYY-MM-DD. Default: today",
            "maxLength": 10,
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "credit_note_summary"
    },
    {
      "description": "Change a draft credit note while it is still a draft: recipient, reason, lines, currency, invoice reference, issue date or notes. Pass only what changes; new lines replace all old ones. A finalized note is immutable and is refused by name.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "currency": {
            "description": "ISO code. Changing it reprices nothing: the stored minor units carry over, so only change it to fix a wrong currency",
            "pattern": "^[A-Za-z]{3}$",
            "type": "string"
          },
          "id": {
            "description": "The draft id, e.g. CN-DRAFT-2026-0001",
            "maxLength": 200,
            "type": "string"
          },
          "invoice_ref": {
            "anyOf": [
              {
                "maxLength": 200,
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "description": "New invoice reference, or null to detach the note from its invoice"
          },
          "issue_date": {
            "maxLength": 10,
            "type": "string"
          },
          "lines": {
            "description": "The full new line set, replacing every existing line",
            "items": {
              "additionalProperties": false,
              "properties": {
                "description": {
                  "description": "What is being credited, e.g. Returned: 3 x USB-C cable",
                  "maxLength": 500,
                  "type": "string"
                },
                "quantity": {
                  "description": "How many, e.g. 3 or 2.5 hours",
                  "exclusiveMinimum": 0,
                  "maximum": 1000000,
                  "type": "number"
                },
                "tax_rate": {
                  "description": "Tax rate in percent, e.g. 23 for 23%. Default 0",
                  "maximum": 100,
                  "minimum": 0,
                  "type": "number"
                },
                "unit_price_minor": {
                  "description": "Unit price in whole minor units (integer cents). 10420 is EUR 104.20",
                  "maximum": 100000000000000,
                  "minimum": 0,
                  "type": "integer"
                }
              },
              "required": [
                "description",
                "quantity",
                "unit_price_minor"
              ],
              "type": "object"
            },
            "maxItems": 100,
            "minItems": 1,
            "type": "array"
          },
          "notes": {
            "anyOf": [
              {
                "maxLength": 2000,
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "description": "New notes text, or null to remove the notes"
          },
          "reason": {
            "enum": [
              "returned_goods",
              "overcharge",
              "discount_correction",
              "service_issue",
              "other"
            ],
            "type": "string"
          },
          "reason_detail": {
            "anyOf": [
              {
                "maxLength": 200,
                "type": "string"
              },
              {
                "type": "null"
              }
            ]
          },
          "recipient": {
            "maxLength": 200,
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "credit_note_update"
    },
    {
      "description": "Turn Pro on for this connection with key, an MCPL1.<payload>.<signature> issued at checkout for this server or the bundle. Data under your token stays; a wrong or expired key changes nothing. license_status confirms it.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "key": {
            "description": "License key from checkout, MCPL1.<payload>.<signature>",
            "type": "string"
          }
        },
        "required": [
          "key"
        ],
        "type": "object"
      },
      "name": "license_activate"
    },
    {
      "description": "Report this endpoint's licence state for your token as JSON: the product, the tier free or pro, why it is not Pro, and the checkout URL. Call it to explain a free-tier refusal. No arguments, nothing changes.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "license_status"
    }
  ]
}

What the leaf hashes

{"body":"01b702fe50e7302565baaf6d3c03cd0f8a355dd6a9b46b4cecd0ac5cf0611ad4","id":292573,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793048851937622,"prev":null,"subject":"413d8fc1-5d97-4650-a9a7-cf66ae4e306d","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. 0xe1f8247d0ead7dcd70cb785ef8ba13c5c44053e69750285f41861b1c874cfe13
2. 0x39dd27301da97d563be55ed92cf5329d26c9e18dde4e91e75ee413d6a6752043
3. 0x09146f2d2598ade3a8adc155580477d861f4db8460931e414c88704aa00121f8
4. 0xb0b1e07327d1d7e4239ec4aadf655f245335ab6f8492a0dda48b4650ff787d4d
5. 0x82c47132e131a1abfb9aba5803bad46c86229c549d12e23255851880b5d20aab
6. 0xbf78441c558e882b0d21608491afcf8f8a31dd308488fa7eb4666ce9ace2764b
7. 0x788f2b7c7ed9db6f423380699e763cf388ee9f7014382595da132eb235e28d78
8. 0x619226b081f8ec738be488c7c844bf6414cb359178e46efadd8d2f07fbd66e5e
9. 0xe063f5fccc9cbc21acabf9481af1cf1a69302a8ff004733c8d05c188c56f3cbe
10. 0x49d720e73d446e1def3567153233c121c2d3097da1088aec52da97cc45a1a260
11. 0xce35ce45ef8f8ea3dfabeeed3d2069f34fb82c77d0d8f31e3429b7d6deb0a351
12. 0x714c96bd488ccf4af927c8bc83397404f7f6f1b165b622d0e8216290209825e4
13. 0x3fcdf7fa32ccefe771eb57ae3015142065d64e3ce732fea7d11b9a3c99dde44f
14. 0x0b7541c75cc482a7134110311d7dbd02095d969ba21177de9b21a52a55981718
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae