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Japan Finance Reference Checks

by mk-career-planning · remote · no sign-in to list tools · v0.1.0 · published by GitHub user mk-career-planning

Which JPY rate did Japan Customs publish for a date? Is a firm on an FSA list? Hosted. No advice.

Changes · 4
CompareRegistry entry

7 tools: 4 change things and 3 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http jp-finance https://jp-finance-production.mk-career-planning.workers.dev/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

7 tools

Changes things 4Claude Code: ask
  • fsa_enforcement_by_corporate_numberWhich rows of the Japan FSA case list of adverse administrative actions (business improvement or suspension orders and similar, by the FSA and Local Finance Bureaus, fiscal 2002 to…No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Which rows of the Japan FSA case list of adverse administrative actions (business improvement or suspension orders and similar, by the FSA and Local Finance Bureaus, fiscal 2002 to the list's as-of date) state this 13-digit corporate number? Rows as published: date, action type, legal basis, business type, lifted flag, with the list version, SHA-256 and the scope of what was checked. Zero rows is not_found_in_checked_records with that scope; after the as-of date is unknown. No name search.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
    • idempotentHint: true
  • fsa_register_changesWhich entries were added to, dropped from, changed in or returned to Japan FSA registers and warning lists since a date?No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Which entries were added to, dropped from, changed in or returned to Japan FSA registers and warning lists since a date? From this service's own record of list versions (the FSA publishes only current lists). Each change has the list, registration number, name as published (personal names withheld), before/after fields, observed_at and the list as-of date. Reasons are not published or inferred. History starts at tracking_since; free window: last 30 days.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • jp_customs_fxWhich JPY rate did Japan Customs publish for this currency on this date?No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Which JPY rate did Japan Customs publish for this currency on this date? Input: ISO 4217 code and YYYY-MM-DD date. Returns status (valid/invalid/unknown), the inclusive effective period, the JPY rate as published with its base units (1 or 100), source URLs, retrieval and verification times and SHA-256 hashes. Dates from 2021-08-15. Unpublished periods and unlisted currencies return unknown. Reference for customs and bookkeeping only; not a market or remittance rate; no tax calculation.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • jp_customs_fx_batchWhich JPY rates did Japan Customs publish for these 1-50 currency/date pairs?No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Which JPY rates did Japan Customs publish for these 1-50 currency/date pairs? One call returns ordered per-item status, effective periods, JPY rates as published with base units (1 or 100), source URLs, retrieval and verification times and hashes, read from one dataset snapshot. Dates from 2021-08-15. Unpublished periods and unlisted currencies return unknown. Not charged if no item can be answered. No date selection, tax calculation, market or remittance rates, or forecasts.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
Only reads 3Claude Code: allow
  • catalogList the tools of this server with prices, data sources, licensing, daily limits and data freshness.No findings

    Why it is in this group

    • The description's first verb is "list": a word for reading.
    Description, as the server wrote it
    List the tools of this server with prices, data sources, licensing, daily limits and data freshness.

    Annotations the server declares

    • readOnlyHint: true
  • get_receiptRe-fetch the stored result of a settled paid call by its receipt_id, for when the response was lost after payment.No findings

    Why it is in this group

    • The name "get_receipt" says "get": a word for reading.
    Description, as the server wrote it
    Re-fetch the stored result of a settled paid call by its receipt_id, for when the response was lost after payment. Free. Unknown or unsettled receipt ids return RECEIPT_NOT_FOUND. Results are kept for 90 days after settlement.

    Annotations the server declares

    • readOnlyHint: true
  • jp_fsa_registry_lookupIs this business (name, registration or 13-digit corporate number) on a Japan FSA register or warning list?No findings

    Why it is in this group

    • The name "jp_fsa_registry_lookup" says "lookup": a word for reading.
    Description, as the server wrote it
    Is this business (name, registration or 13-digit corporate number) on a Japan FSA register or warning list? Exact match (optional domain) against FSA registers (financial instruments, crypto-asset exchange, electronic payment instruments, funds transfer, money lending) and warnings to unregistered businesses. Returns matches with registration type, entity tie (domain alone: unverified), name candidates and as-of dates. Stated scope only; no warning match is not proof none exists. No advice.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http jp-finance https://jp-finance-production.mk-career-planning.workers.dev/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__jp-finance__catalog",
      "mcp__jp-finance__jp_fsa_registry_lookup",
      "mcp__jp-finance__get_receipt"
    ],
    "ask": [
      "mcp__jp-finance__jp_customs_fx",
      "mcp__jp-finance__fsa_register_changes",
      "mcp__jp-finance__fsa_enforcement_by_corporate_number",
      "mcp__jp-finance__jp_customs_fx_batch"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as jp-finance. Review it before you use it.