HojinCheck — Japanese corporate verification API (hojin = 法人/corporate entity)

com.hojincheckPublished by hojincheck.comOfficial publisherv0.1.0Updated Oct 24, 2026

Verify Japanese companies, invoice-issuer registrations and addresses against government open data.

VerifiedStreamable HTTPWeb executableLocation & LifestyleBusiness & Commerce

Overview

AI-generated overview

Remote MCP server that lets an assistant verify Japanese companies, qualified invoice issuers, addresses and business days against government open data.

What you can do
Resolve a company name (including kana variants) to candidate corporate numbers with confidence scores and evidence labels, or verify a 13-digit corporate number for existence, name, head office, entity type and closure status, with optional change history. Check a qualified invoice issuer registration number (T plus 13 digits) for registration status, dates and revocation, optionally as of a given date or with publication history. Fetch a company profile such as address, representative, capital and employee count from gBizINFO with per-field source and last-retrieved metadata. Normalize a Japanese address into prefecture, municipality and town-level components, resolve the town ID and cross
When to use it
Use it when an assistant must confirm that a Japanese company or invoice issuer is real and currently registered, look up corporate details from official sources, clean up Japanese addresses, or compute Japanese business days around holidays and year-end closures.
Requirements
A remote streamable HTTP endpoint; no local runtime or package. A bearer API key is required in the Authorization header (X-Api-Key is also accepted); a free key allows 100 requests per day. Network access to the endpoint is needed.
Before you install
The API key is a secret sent in the Authorization header; keep it out of logs and shared transcripts. Requests are forwarded to the provider and to Japanese government data sources, so company names, corporate numbers and addresses you submit leave your machine. Address normalization stops at town level and does not guess missing parts.

Installation

In SourceWeft

  1. Open HojinCheck — Japanese corporate verification API (hojin = 法人/corporate entity) in the dashboard and add it to a workspace.
  2. Connect Authorization token credentials. They are stored privately and never shown on public pages.
  3. 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/com.hojincheck%2Fhojincheck/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": {
    "hojincheck-japanese-corporate-verificati": {
      "type": "http",
      "url": "https://hojincheck.com/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_TOKEN>"
      }
    }
  }
}

Tools

6

resolve_company

法人名から法人番号を解決

法人名（表記ゆれ・かな/カナ対応）から法人番号の候補と確度（0〜1＋根拠ラベル）を返します。データ源: 国税庁法人番号システムWeb-API。

Parametersnamerequiredlimitaddressinclude_closed

verify_company

法人番号の実在検証

法人番号（13桁・チェックディジット検証つき）から実在・商号・本店所在地・法人種別・閉鎖ステータスを返します。include_history=trueで商号変更等の履歴も返します。データ源: 国税庁法人番号システムWeb-API。

Parametersinclude_historycorporate_numberrequired

verify_invoice_number

適格請求書発行事業者登録番号の検証

適格請求書発行事業者の登録番号（T+13桁）から登録有無・登録年月日・取消/失効を返します。on_dateで基準日時点の有効性判定、include_history=trueで公表履歴も返します。入力は登録番号のみ（氏名等による検索は提供しません）。データ源: 国税庁適格請求書発行事業者公表システムWeb-API。

Parameterson_dateinclude_historyregistration_numberrequired

get_company_profile

法人プロファイル取得（gBizINFO）

法人番号（13桁・チェックディジット検証つき）からgBizINFOの法人プロファイル（所在地・代表者・資本金・従業員数等）を、項目別の出典・最終取得日メタとあわせて返します。データ源: Gビズインフォ REST API v2（経済産業省）。

Parameterscorporate_numberrequired

normalize_address

日本住所の正規化・要素分解・郵便番号照合

日本の住所を正規化し、都道府県／市区町村／町字（大字・町名＋丁目）に分解して町字ID（アドレス・ベース・レジストリ）を解決し、郵便番号と照合します（不一致は不一致として明示）。【v1の粒度と限界】分解は町字（大字・丁目）まで。街区符号・住居番号・地番・小字・京都の通り名は解析対象外で、未解析部分は残余文字列としてそのまま返します（推測補完なし）。データ源: アドレス・ベース・レジストリ町字マスター（デジタル庁）＋日本郵便郵便番号データ（ローカルマスター駆動・政府API停止の影響なし）。

Parametersaddressrequiredpostal_code

jp_calendar

日本の祝日・営業日計算

日本の祝日判定と営業日計算（内閣府「国民の祝日」CSV準拠）。営業日=土日・祝日以外。year_end_as_holiday=trueで12/29〜1/3も非営業日扱い。

Parametersoprequiredtodatedaysfromyear_end_as_holiday

Version history

1
  1. v0.1.0LatestSep 16, 2026

Score

72% 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

    Publish an icon in the registry entry.

  • 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.