Evidence row 256964

Observed 26 Oct 2026, 15:43 UTC, by probe.mcp/1.

Kind: mcp.tools
About: endpoint 3053d01b-a60e-4107-b4a0-62d547e289b8
Recorded: 26 Oct 2026, 15:43 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: d16314a7bc6f69b65846bfa99b3408ea2c74a1f0b465541b52685c881aaedd54
Leaf: 0x2425dc993b255948b5eb1ce01c7eea2ac6500f2f5c2166e0bf7fa3a12ea5acb6

What was observed

{
  "count": 11,
  "tools": [
    {
      "description": "Record something one person paid for the group. Split equally by default; pass split_between for a subset, or shares for an uneven split. One expense covers one set of people — a receipt whose items aren't all shared by everyone is several expenses, so call this once per group of items that the same people share, rather than splitting the total equally. Works on simple, accountless splits. Secure splits (created by a signed-in user) are read-only here and must be opened in a browser.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "amount": {
            "description": "Amount in the split's currency, as a decimal (e.g. 249.50).",
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "date": {
            "description": "Date as YYYY-MM-DD. Defaults to today.",
            "type": "string"
          },
          "description": {
            "description": "What it was, e.g. \"Groceries\".",
            "type": "string"
          },
          "paid_by": {
            "description": "Who paid — a participant's name (or id) in this split. A card receipt rarely names the payer, so ask unless you know: guess wrong and every balance points the wrong way. If the user counts themselves among the participants, assume it was them and say that you assumed it — what you must not do is pick a payer silently.",
            "type": "string"
          },
          "shares": {
            "description": "Uneven split. Either an exact `amount` per person (must add up to the total) or a relative `weight` per person (e.g. weight 2 for a couple). Don't combine with split_between.",
            "items": {
              "properties": {
                "amount": {
                  "exclusiveMinimum": 0,
                  "type": "number"
                },
                "participant": {
                  "type": "string"
                },
                "weight": {
                  "exclusiveMinimum": 0,
                  "type": "number"
                }
              },
              "required": [
                "participant"
              ],
              "type": "object"
            },
            "type": "array"
          },
          "split": {
            "description": "The split key, or the whole https://split.xuper.fun/k/<key> link.",
            "type": "string"
          },
          "split_between": {
            "description": "Names of the people sharing this cost, split equally. Defaults to everyone.",
            "items": {
              "type": "string"
            },
            "type": "array"
          }
        },
        "required": [
          "split",
          "amount",
          "paid_by"
        ],
        "type": "object"
      },
      "name": "add_expense"
    },
    {
      "description": "Add someone to an existing split. Works on simple, accountless splits. Secure splits (created by a signed-in user) are read-only here and must be opened in a browser.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "name": {
            "minLength": 1,
            "type": "string"
          },
          "split": {
            "description": "The split key, or the whole https://split.xuper.fun/k/<key> link.",
            "type": "string"
          }
        },
        "required": [
          "split",
          "name"
        ],
        "type": "object"
      },
      "name": "add_participant"
    },
    {
      "description": "Create a new xupersplit for sharing expenses in a group. No account needed. Returns a secret link — give it to the user and tell them to share it with the group, since anyone holding the link can see and edit the split.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "currency": {
            "description": "Currency code. Defaults to SEK.",
            "enum": [
              "SEK",
              "EUR",
              "USD",
              "NOK",
              "DKK",
              "ISK",
              "GBP",
              "CHF",
              "PLN",
              "THB",
              "SATS"
            ],
            "type": "string"
          },
          "participants": {
            "description": "Names of everyone splitting, at least two.",
            "items": {
              "minLength": 1,
              "type": "string"
            },
            "minItems": 2,
            "type": "array"
          },
          "title": {
            "description": "What the split is for, e.g. \"Ski trip\".",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "title",
          "participants"
        ],
        "type": "object"
      },
      "name": "create_split"
    },
    {
      "description": "Remove an expense or payment for good. Works on simple, accountless splits. Secure splits (created by a signed-in user) are read-only here and must be opened in a browser.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "entry_id": {
            "description": "The entry's id, from get_split.",
            "type": "string"
          },
          "split": {
            "description": "The split key, or the whole https://split.xuper.fun/k/<key> link.",
            "type": "string"
          }
        },
        "required": [
          "split",
          "entry_id"
        ],
        "type": "object"
      },
      "name": "delete_entry"
    },
    {
      "description": "Read a split: participants, expenses, per-person balances and the shortest set of payments that settles everyone up.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "split": {
            "description": "The split key, or the whole https://split.xuper.fun/k/<key> link.",
            "type": "string"
          }
        },
        "required": [
          "split"
        ],
        "type": "object"
      },
      "name": "get_split"
    },
    {
      "description": "Record that one person paid another back, settling part or all of a debt. Use get_split first to see who should pay whom. Works on simple, accountless splits. Secure splits (created by a signed-in user) are read-only here and must be opened in a browser.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "amount": {
            "description": "Amount in the split's currency, as a decimal (e.g. 249.50).",
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "date": {
            "description": "Date as YYYY-MM-DD. Defaults to today.",
            "type": "string"
          },
          "description": {
            "description": "How it was paid, e.g. \"Swish, 3 March\". Shown in the history.",
            "type": "string"
          },
          "from": {
            "description": "Who sent the money — a participant's name (or id) in this split.",
            "type": "string"
          },
          "split": {
            "description": "The split key, or the whole https://split.xuper.fun/k/<key> link.",
            "type": "string"
          },
          "to": {
            "description": "Who received it — a participant's name (or id) in this split.",
            "type": "string"
          }
        },
        "required": [
          "split",
          "from",
          "to",
          "amount"
        ],
        "type": "object"
      },
      "name": "record_payment"
    },
    {
      "description": "Remove someone from a split. Only works if they aren't on any expense yet. Works on simple, accountless splits. Secure splits (created by a signed-in user) are read-only here and must be opened in a browser.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "participant": {
            "description": "Who to remove — a participant's name (or id) in this split.",
            "type": "string"
          },
          "split": {
            "description": "The split key, or the whole https://split.xuper.fun/k/<key> link.",
            "type": "string"
          }
        },
        "required": [
          "split",
          "participant"
        ],
        "type": "object"
      },
      "name": "remove_participant"
    },
    {
      "description": "Change a participant's name. Works on simple, accountless splits. Secure splits (created by a signed-in user) are read-only here and must be opened in a browser.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "name": {
            "description": "The new name.",
            "minLength": 1,
            "type": "string"
          },
          "participant": {
            "description": "Who to rename — a participant's name (or id) in this split.",
            "type": "string"
          },
          "split": {
            "description": "The split key, or the whole https://split.xuper.fun/k/<key> link.",
            "type": "string"
          }
        },
        "required": [
          "split",
          "participant",
          "name"
        ],
        "type": "object"
      },
      "name": "rename_participant"
    },
    {
      "description": "Set how a participant wants to be paid back, so the split can show a QR code or pay link. Replaces their current list (pass an empty array to clear it). Works on simple, accountless splits. Secure splits (created by a signed-in user) are read-only here and must be opened in a browser.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "methods": {
            "items": {
              "properties": {
                "type": {
                  "enum": [
                    "swish",
                    "vipps",
                    "mobilepay",
                    "revolut",
                    "lightning",
                    "evm",
                    "solana",
                    "iban"
                  ],
                  "type": "string"
                },
                "value": {
                  "description": "Phone number for swish/vipps/mobilepay, IBAN, Revolut tag, Lightning address, 0x/ENS address, or Solana address.",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "value"
              ],
              "type": "object"
            },
            "maxItems": 8,
            "type": "array"
          },
          "participant": {
            "description": "Whose details these are — a participant's name (or id) in this split.",
            "type": "string"
          },
          "split": {
            "description": "The split key, or the whole https://split.xuper.fun/k/<key> link.",
            "type": "string"
          }
        },
        "required": [
          "split",
          "participant",
          "methods"
        ],
        "type": "object"
      },
      "name": "set_payment_methods"
    },
    {
      "description": "Change an existing expense or payment. Only the fields you pass are changed. Entry ids come from get_split. Works on simple, accountless splits. Secure splits (created by a signed-in user) are read-only here and must be opened in a browser.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "amount": {
            "description": "Amount in the split's currency, as a decimal (e.g. 249.50).",
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "date": {
            "description": "Date as YYYY-MM-DD. Defaults to today.",
            "type": "string"
          },
          "description": {
            "type": "string"
          },
          "entry_id": {
            "description": "The entry's id, from get_split.",
            "type": "string"
          },
          "paid_by": {
            "description": "Move the entry to a different payer.",
            "type": "string"
          },
          "shares": {
            "description": "Uneven split. Either an exact `amount` per person (must add up to the total) or a relative `weight` per person (e.g. weight 2 for a couple). Don't combine with split_between.",
            "items": {
              "properties": {
                "amount": {
                  "exclusiveMinimum": 0,
                  "type": "number"
                },
                "participant": {
                  "type": "string"
                },
                "weight": {
                  "exclusiveMinimum": 0,
                  "type": "number"
                }
              },
              "required": [
                "participant"
              ],
              "type": "object"
            },
            "type": "array"
          },
          "split": {
            "description": "The split key, or the whole https://split.xuper.fun/k/<key> link.",
            "type": "string"
          },
          "split_between": {
            "description": "Names of the people sharing this cost, split equally. Defaults to everyone.",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "to": {
            "description": "New recipient — payments only.",
            "type": "string"
          }
        },
        "required": [
          "split",
          "entry_id"
        ],
        "type": "object"
      },
      "name": "update_entry"
    },
    {
      "description": "Change a split's title or currency. The currency is locked once the split has expenses. Works on simple, accountless splits. Secure splits (created by a signed-in user) are read-only here and must be opened in a browser.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "currency": {
            "enum": [
              "SEK",
              "EUR",
              "USD",
              "NOK",
              "DKK",
              "ISK",
              "GBP",
              "CHF",
              "PLN",
              "THB",
              "SATS"
            ],
            "type": "string"
          },
          "split": {
            "description": "The split key, or the whole https://split.xuper.fun/k/<key> link.",
            "type": "string"
          },
          "title": {
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "split"
        ],
        "type": "object"
      },
      "name": "update_split"
    }
  ]
}

What the leaf hashes

{"body":"d16314a7bc6f69b65846bfa99b3408ea2c74a1f0b465541b52685c881aaedd54","id":256964,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793029432198108,"prev":null,"subject":"3053d01b-a60e-4107-b4a0-62d547e289b8","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).
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Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON