Evidence row 257358

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Scenario-curated bundle of full structured rules (statements, citations, parameters) for one use case: defi_staking | overseas_exchange | corporate_holding | transition_2028. Paid via x402: each call costs 0.05 USDC. This tool returns the HTTP 402 payment challenge (spec-conformant accepts list) for the pack resource. The 402 is real: settle it against /v1/packs/{scenario} with an X-PAYMENT header and the 200 response delivers the full pack body ({status:\"settled\", settlement, pack}) — payment buys the actual structured rules, not a receipt. Not tax advice. 一般的な税制情報の提供であり、個別の税務判断は税理士にご相談ください。",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "scenario": {
            "description": "Scenario pack to retrieve: defi_staking | overseas_exchange | corporate_holding | transition_2028",
            "enum": [
              "defi_staking",
              "overseas_exchange",
              "corporate_holding",
              "transition_2028"
            ],
            "type": "string"
          }
        },
        "required": [
          "scenario"
        ],
        "type": "object"
      },
      "name": "get_rule_pack"
    },
    {
      "description": "FREE — returns structured tax parameters with per-value sources: progressive income tax brackets, resident tax and reconstruction surtax figures, the 2028-reform separate-taxation rate and loss-carryforward years, and the salary-filer filing threshold. Approximate reference values from public sources; not tax advice. 一般的な税制情報の提供であり、個別の税務判断は税理士にご相談ください。",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "tax_year": {
            "description": "Tax year for epoch annotation of pending-reform rules, e.g. 2026 or 2028",
            "maximum": 2100,
            "minimum": 2000,
            "type": "integer"
          }
        },
        "type": "object"
      },
      "name": "get_tax_parameters"
    },
    {
      "description": "FREE — returns one full structured rule: statement, exceptions, status, effective dates, machine tags and statutory citations (sources), served verbatim from the versioned rules corpus. Not tax advice. 一般的な税制情報の提供であり、個別の税務判断は税理士にご相談ください。",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "rule_id": {
            "description": "Rule id, e.g. jp.crypto.income.classification.individual",
            "type": "string"
          }
        },
        "required": [
          "rule_id"
        ],
        "type": "object"
      },
      "name": "get_tax_rule"
    },
    {
      "description": "FREE — returns structured rules. Catalog of machine-readable Japanese crypto-asset tax rules (rules-as-code): titles, status (current / enacted_pending), effective dates and statutory citations, filterable by category, taxpayer and tax_year. tax_year resolves the current-vs-2028-reform epoch per rule (applies / pending_enforcement). Sources are public only (NTA FAQ, e-Gov statutes, MOF documents); not tax advice. 一般的な税制情報の提供であり、個別の税務判断は税理士にご相談ください。",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "category": {
            "description": "Category filter: corporate | cost_basis | filing | income_classification | reform_2028 | taxable_events",
            "type": "string"
          },
          "tax_year": {
            "description": "Tax year to resolve rule applicability, e.g. 2026 or 2028",
            "maximum": 2100,
            "minimum": 2000,
            "type": "integer"
          },
          "taxpayer": {
            "description": "Taxpayer filter: all | corporate | individual",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "list_tax_rules"
    }
  ]
}

What the leaf hashes

{"body":"4a9b4729397347de0e5639f0c0b0bd490eecbef2cc1726e2e5b8a772562453f8","id":257358,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793029689941435,"prev":null,"subject":"e8a7ddc0-57ec-4e31-8ca0-4dda8e73706f","subject_kind":"endpoint"}

Proof

Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.