Stable signalNo paid features detectedHigh-risk permissions

マイナポータル

様々なオンライン行政サービスで、マイナンバーカードを利用するためのアプリケーションです。

Users2MCurrent public install base

Rating1.4Store average score

Reviews1,688Public review volume

Manifest versionV3Extension platform version

7-day growth0Net users gained this week

7-day growth rate0%Relative weekly velocity

Preview

マイナポータル Media preview

7 assets

Trend

User growth trend

Review user movement across collected snapshots.

User Growth Over Time

Rating trend

7-day rating trend

View collected rating snapshots from the latest 7-day window to assess rating stability.

7-day rating change

Start

1.42

Latest

1.42

7-day rating change

0.00

2026年7月13日2026年7月19日

Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthNo data

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7-day growthFlat

00%

30-day growthNo data

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Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version52.1.0.0

ManifestV3

Size29.17KiB

Languages1日本語

Published--

Store updated--

Last crawled--

Overview

Product summary

Review the store description, core capabilities, and common use cases.

■注意事項

Chrome拡張機能の他に専用インストーラが必要となります。ウェブサイトを参照してください。

■対応OS

・Microsoft Windows 11

・macOS Tahoe（バージョン26.0以上）

・macOS Sequoia（バージョン15.0以上）

Reviews

Recent review snapshot

Inspect the latest comments and rating distribution.

Store average score1.4Chrome Web Store aggregate rating, including ratings without synced review text

Synced text average1.3Average computed only from synced review bodies below

Reviews with text1,323Synced review bodies

Total ratings / reviews1,688Chrome Web Store public rating/review count

Store average score: 1.4. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5★

4★

3★

2★

1★

1200

tumugu (tumugu)2018年1月23日

特に問題なく使えています。入力方法は面倒ですが、セキュリティを考えるとしょうがないですし、現状のままでも問題ないと思います。

Gucchi N.T.2017年12月15日

Google Chrome版APが公開されておりそちらを利用しました。 ICカードリーダーACR39-NTTComにて認証をしてログインできました。

岡部祐一2017年11月23日

IEでないと使えない

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FreemiumConfidence 64

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銘柄マーカー

Workflow & Planning

ページ内から銘柄を見つけ出し、株価チャート等を表示させます。株式トレーダー向け。

その本、図書館にあります。

Tools

amazonで今、見ている本が近所の図書館にあるかどうかが分かります。

AI product read

Browser bridge/launcher enabling My Number Card (マイナンバーカード) digital authentication on Japanese government online services via native messaging to a local card reader application

Japanese residents need a way to use their physical My Number Cards for digital authentication on various government web portals (e-tax, local government services, etc.) through Chrome. The extension acts as a communication bridge between government web pages and the native My Number Card reader application.

User visits a government service website → the website detects the extension via a hidden input element → the website dispatches a 'launchApp' custom event → the content script forwards this to the background service worker → the service worker connects to the native 'jp.go.cao.mpa' messaging host → the native app communicates with the physical card reader to read the My Number Card and request PIN → authentication result is returned through the chain back to the government website.

Target users: Japanese residents who need to authenticate with online government services using their My Number Card / Users filing taxes, applying for certificates, or accessing local government online portals in Japan

Extension is very small (4 text files, ~8KB of source), making analysis straightforward
The native host application (jp.go.cao.mpa) source is not included and is distributed separately via a dedicated installer, so its internals cannot be verified
No popup UI exists — the extension operates entirely as a content script + background service worker bridge

Monetization

No paid features detected

No evidence of any paid features, payment platforms, subscriptions, or premium tiers in the extension code. This is a government-provided (内閣府 / Cabinet Office) free tool for enabling My Number Card authentication on government services. The 'pro' keyword hit is only in verified_contents.json metadata and is unrelated to payment.

Confidence: 95
Payment platform: --
Source: AI / High
Login required: Yes
Reason: The extension is a bridge that enables My Number Card (マイナンバーカード) authentication on Japanese government online services. The extension itself has no login UI, but its core workflow requires the user to authenticate via a physical My Number Card + PIN on destination government services (e.g., *.go.jp tax portals, local government sites). The native host app 'jp.go.cao.mpa' handles the card reader interaction, and the government websites require My Number Card-based identity verification to complete any workflow.

Permission risk

High-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

敏感权限：nativeMessaging

Publisher

デジタル庁

マイナポータルアプリ

Email: [email protected]
Phone: --
Address: --

Public contact fields are shown above. Developer portfolio pages are available on paid accounts.

View developer portfolio

Permissions

Host access

マイナポータル

マイナポータル Media preview

User growth trend

User Growth Over Time

7-day rating trend

7-day rating change

Daily, weekly, and monthly growth

Version, languages, and crawl freshness

Product summary

Recent review snapshot

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