JP-Verify

Name: JP-Verify
Author: Hiroshi-Ichiyanagi

by Hiroshi-Ichiyanagiversion 0.1.0i★ –iRuns on your computer

Registry namexyz.obolpay/jp-verify

Install

Overview

Description from the maker (original English)

Verify Japanese companies: invoice T-numbers, Corporate Numbers, English names, shareholders

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi0 of 1 passedChecked from public information; code not scanned yet
UsageiVery new↓ 19/wk · ★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Accounting, finance & tax
You need to fill in: JPVERIFY_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 0 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: JPVERIFY_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "jp-verify": {
      "command": "uvx",
      "args": [
        "jp-verify-mcp"
      ],
      "env": {
        "JPVERIFY_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add jp-verify --env JPVERIFY_API_KEY=your-value -- uvx jp-verify-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "jp-verify": {
      "command": "uvx",
      "args": [
        "jp-verify-mcp"
      ],
      "env": {
        "JPVERIFY_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "jp-verify": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "jp-verify-mcp"
      ],
      "env": {
        "JPVERIFY_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

JPVERIFY_API_KEY secret env
Optional JP-Verify API key, sent as X-API-Key. Without it the key-less sandbox applies (limited per IP address per day).

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

! Caution
Maker matches the repo
The publisher (obolpay.xyz) is not the repo owner (Hiroshi-Ichiyanagi); someone else may have listed it
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Accounting, finance & taxi

More stars than 0% of the other 2949 servers in this category
Published to the registry more recently than 50% of the other 2949 servers in this category
Basic checks equal to or better than 19% of the other 2949 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is JP-Verify safe?

It passed 0 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: JPVERIFY_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 32 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Finance Toolkit, SolidInvoice, Korea Tax Calculator

Alternatives

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Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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SolidInvoice

Create and send invoices and quotes, manage clients, and track payments in SolidInvoice.

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Korea Tax Calculator

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Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

jp-verify-mcp

An MCP server for JP-Verify, the English-first API that verifies Japanese companies: qualified-invoice registration numbers (T-numbers), Corporate Numbers (法人番号), English names and major shareholders.

It is a thin client. Each tool call is one HTTPS request to JP-Verify's public API at https://jp-verify.obolpay.xyz. The package holds no register data and contacts no other site; it downloads nothing from the National Tax Agency or from EDINET.

Tools

Tool	JP-Verify endpoint	Returns
`verify_japanese_company`	`GET /v1/verify`	Registration status and dates, Corporate Number, Japanese name and address, English name and address (labelled official or machine-romanised)
`verify_japanese_companies_batch`	`POST /v1/verify`	The same for many numbers: up to 100 per call on the sandbox and Starter keys, 500 on Growth, 1,000 on Reseller. Malformed numbers are listed under `invalid` and not charged
`get_major_shareholders`	`GET /v1/shareholders`	The 「大株主の状況」 (major shareholders) table from a company's securities report on EDINET, or a `no_public_disclosure` statement. Optional `as_of` (YYYY-MM-DD)
`find_japanese_company_by_name`	`GET /v1/resolve`	Candidate Corporate Numbers for a company name (rule-based exact matching, not fuzzy search)

All four are read-only. Each answered call (HTTP 200) is one metered lookup on your JP-Verify plan; the batch tool counts one per well-formed number. verify_japanese_company and get_major_shareholders reject a number that fails JP-Verify's own format or check-digit rule locally, without a call; the batch tool sends the list as given and JP-Verify lists such numbers under invalid, free of charge.

Every result has two parts:

jp_verify_response: JP-Verify's answer exactly as sent, including data_as_of, notes, disclaimers and the attribution strings;
metadata: the endpoint, the HTTP status, whether an API key or the key-less sandbox was used, the quota headers (limit, remaining, resets_at) and where the data comes from.

HTTP errors (400, 401, 404, 429, 503, 5xx) and network failures come back as tool errors with a one-line explanation. JP-Verify does not charge for 400, 401, 404, 429 or 503 answers.

Install and run

Requires Python 3.10 or later.

uvx jp-verify-mcp                # or: pip install jp-verify-mcp && jp-verify-mcp

From a source checkout: pip install ., then jp-verify-mcp.

stdio (default)

For Claude Desktop, Claude Code (.mcp.json), Cursor and other clients that start a local server:

"mcpServers": { "jp-verify": { "command": "uvx", "args": ["jp-verify-mcp"], "env": { "JPVERIFY_API_KEY": "your key (optional)" } } } }

Leave out env to use the key-less sandbox.

Streamable HTTP

jp-verify-mcp --transport streamable-http --host 127.0.0.1 --port 8000

endpoint: http://127.0.0.1:8000/mcp (stateless, JSON responses)

A client may send its own key in an X-API-Key header. It is forwarded to JP-Verify for that call only and takes precedence over JPVERIFY_API_KEY.
A loopback bind gets DNS-rebinding protection automatically. For a public host name pass --allowed-host your.host.name (repeatable).
On a non-loopback address the server refuses to start while JPVERIFY_API_KEY is set, because every caller without its own key would use it. Pass --allow-shared-key if that is intended.
The sandbox allowance is per IP address, so key-less callers of a hosted endpoint share the host's allowance.

Configuration

Variable	Default	Meaning
`JPVERIFY_API_KEY`	unset	Your JP-Verify API key, sent as `X-API-Key`. Unset: the key-less sandbox
`JPVERIFY_BASE_URL`	`https://jp-verify.obolpay.xyz`	API origin. Plain `http://` is accepted only for localhost
`JPVERIFY_TIMEOUT`	`20`	Seconds per request (at most 120)

Other options: jp-verify-mcp --help.

Keys and plans

Without a key, JP-Verify's key-less sandbox answers. It is limited per IP address per day (JP-Verify documents 50 requests a day, as of 2026-10-07) and JP-Verify may change or end it (its Terms, Article 4).
Paid plans and their prices are published on JP-Verify's legal notice: https://jp-verify.obolpay.xyz/legal. For a key, see https://jp-verify.obolpay.xyz or write to yanagithefirst11@gmail.com.

Data, sources and attribution

Registration status, Corporate Number and Japanese name and address come from data published by Japan's National Tax Agency (国税庁): 国税庁適格請求書発行事業者公表サイト (qualified invoice issuers) and 国税庁法人番号公表サイト (Corporate Numbers), mirrored and processed by JP-Verify. They are not produced or guaranteed by the National Tax Agency.
English names: official-en where the company filed an English name with the Corporate Number register; otherwise generated, a machine romanisation that is not authoritative. Most companies have not filed one.
Sole proprietors: number, status and dates only. No name or address is returned.
Major shareholders: the 「大株主の状況」 tables companies file on the FSA's EDINET, extracted by JP-Verify. Organisations are named; every other holder, including every individual, is reported without a name, normally as an aggregate (always on the sandbox). Only companies that file a 有価証券報告書 or 半期報告書 publish this table; for any other company JP-Verify returns no_public_disclosure, a statement of why nothing is published (not a claim that the company has no shareholders). Some filers may show not_yet_available while JP-Verify's ingest catches up. JP-Verify switches this route on separately (its /health reports major_shareholders.enabled); until then the tool answers route_not_enabled.
JP-Verify may add the FSA's EDINET code list (PDL1.0) and GLEIF LEI data (CC0 1.0) to a result.
When you republish data from a response, keep its attribution strings and *_register blocks (JP-Verify Terms, Article 5).
These are register facts as of the dates each response states. They are not tax, legal, investment or ownership advice. JP-Verify answers 503 rather than serve data older than its freshness window.

Privacy

The server sends JP-Verify only what a tool is asked about (numbers, a name, a date) and the API key, if any. It stores nothing, keeps no cache, never retries a call and adds no logging of its own; at the default log level (WARNING) request contents are not logged. JP-Verify's privacy statement: https://jp-verify.obolpay.xyz/v1/privacy. Terms: https://jp-verify.obolpay.xyz/terms.

Development

python3 -m venv .venv && .venv/bin/pip install -e '.[test]'

.venv/bin/python -m pytest

The tests never reach JP-Verify: HTTP is mocked, or answered by a stand-in on 127.0.0.1.

Company and contact

Yanagi the First Co., Ltd. (株式会社ヤナギtheファースト) · yanagithefirst11@gmail.com · https://jp-verify.obolpay.xyz

License

MIT, for this client. Use of the JP-Verify service is governed by its Terms of Service.

Registry

Official MCP Registry name: xyz.obolpay/jp-verify. Source: https://github.com/Hiroshi-Ichiyanagi/jp-verify-mcp

JP-Verify

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Accounting, finance & taxi

Common questions

Alternatives

Finance Toolkit

SolidInvoice

Korea Tax Calculator

README from the maker

jp-verify-mcp

Tools

Install and run

stdio (default)

Streamable HTTP

endpoint: http://127.0.0.1:8000/mcp (stateless, JSON responses)

Configuration

Keys and plans

Data, sources and attribution

Privacy

Development

Company and contact

License

Registry