Japan Finance Reference Checks

io.github.mk-career-planningPublished by GitHub account mk-career-planningv0.1.0Updated Oct 27, 2026

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

The publisher's own server: Finance Foundation

VerifiedStreamable HTTPWeb executableFinanceBusiness & Commerce

Overview

AI-generated overview

Hosted MCP server for Japan Customs JPY exchange rates and Japan FSA register, warning-list and enforcement lookups, with paid calls and receipts.

What you can do
  • Look up the Japan Customs JPY rate for a currency and date, singly or in batches of up to 50 currency/date pairs, with effective periods, source URLs and hashes
  • Check whether a business appears on Japan FSA registers or warning lists by name, registration or 13-digit corporate number
  • Track entries added, dropped, changed or returned to FSA registers and warning lists since a date
  • Find FSA adverse administrative action rows by 13-digit corporate number
  • List the server's tools with prices, data sources, licensing, daily limits and data freshness
  • Re-fetch the stored result of a settled paid call by receipt id
When to use it
Useful when an assistant needs verifiable, sourced Japanese financial reference data: official customs exchange rates for a specific date, or checks against FSA registers, warning lists and enforcement history. It is a reference lookup service, not financial advice.
Requirements
Remote streamable HTTP endpoint; no authentication, environment variables or headers declared. Some tools are paid calls, and results of settled paid calls can be re-fetched by receipt id for 90 days.
Before you install
Some tools are paid, so calls can cost money; check the catalog tool for prices and daily limits first. Lookups send business names, registration or corporate numbers to a third-party hosted service. Results are reference data only and the service states it gives no advice.

Installation

In SourceWeft

  1. Open Japan Finance Reference Checks in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.mk-career-planning%2Fjp-finance/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "japan-finance-reference-checks": {
      "type": "http",
      "url": "https://jp-finance-production.mk-career-planning.workers.dev/mcp"
    }
  }
}

Tools

7

catalog

Catalog: tools, prices and limits

List the tools of this server with prices, data sources, licensing, daily limits and data freshness.

Takes no parameters.

jp_customs_fx

Japan Customs exchange rate lookup

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.

Parametersdaterequiredcurrencyrequired

jp_fsa_registry_lookup

Japan FSA register and warning list check

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.

Parametersnamedomainnumber

fsa_register_changes

Japan FSA register and warning list changes since a date

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.

Parameterslistlimitsincerequiredchange_type

fsa_enforcement_by_corporate_number

Japan FSA administrative action case list by corporate number

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.

Parameterssincecorporate_numberrequired

get_receipt

Get receipt of a paid call

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.

Parametersreceipt_idrequired

jp_customs_fx_batch

Japan Customs exchange rate batch lookup (paid)

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.

Parametersitemsrequired

Version history

1
  1. v0.1.0LatestOct 12, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.

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