Is Musashi Mercari Bridge safe to install?

What data it declares

The developer declares that it collects these kinds of data:

• Personally identifiable information such as name, address, email address or age
• Financial and payment information such as transactions, card numbers or credit history
• Authentication information such as passwords, credentials or PIN codes
• Personal communications such as emails, texts or chat messages
• Website content such as text, images or links on the pages you open

The developer also certifies that your data is not sold to third parties outside approved uses, not used for purposes unrelated to the extension's core function, and not used to decide creditworthiness or lending.

The listing links to a privacy policy.

This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.

What Chrome asks you to allow

When you add it, Chrome asks you to allow it to:

• Read and change your data on a number of websites
• Read your browsing history
• Display notifications

Derived from the manifest by Chrome's documented rules; the dialog's exact wording depends on your Chrome version and language. Chrome asks again if an update requests more.

What it can reach

Specific sites only: 5 match patterns.

• https://musashi.awiiin.com/* only musashi.awiiin.com
• https://www.musashi.awiiin.com/* only www.musashi.awiiin.com
• https://mail.google.com/* only mail.google.com
• https://jp.mercari.com/* only jp.mercari.com
• https://www.mercari.com/* only www.mercari.com

Reaches your browsing data or every site

• See the address and title of every tab you have open tabs

Worth knowing

• Run its own code on the pages it can access scripting

Routine for an extension

• Act on the current tab, but only after you click it activeTab
• Schedule work to run later alarms
• Show you notifications notifications
• Store data in your browser storage

How usual this is for its category

In Productivity · Tools, 21% of extensions ask for access to every site. This one: Access to specific sites only.

The typical extension there declares 3 browser permissions; this one declares 6 browser permissions.

• See the address and title of every tab you have open (tabs): 29% of extensions in this category ask for it.

Counted over the live extensions of the same category after our latest full pass of the store. A share is context, not a verdict: what is normal depends on what the extension is for.

Who uses it and how it is kept up

2 users (last published figure)

• Last updated in the store 123 days ago, on 2026-06-09.
• No new version in the last 90 days.

What the store shows

The store shows none of its badges on this listing. Most listings carry none.

Has it asked for more over time?

This is the question a permission list on its own cannot answer. An extension that shipped narrow and widened later is a different proposition from one that always asked for the same thing.

The permissions this extension requests have not changed since we started watching it.

Who publishes it

kikuchi_shun. This listing has been in the store since 2026-06-09 and was last updated on 2026-06-09.

Similar extensions that ask for less

Listings close to this one in what they say they do, which declare less reach. Less reach is not a verdict on either: compare what each needs for the job.

1. Momiji Companion No permissions at all · No permissions declared 14 users ★ 5.0
2. SysMOD Auth Capture Access to specific sites only · 1 permission, 1 site pattern 10 users
3. 坂ログ ミーグリ同期 Access to specific sites only · 3 permissions, 5 site patterns 10 users

How to check or remove it in Chrome

1. Type chrome://extensions in the address bar and find the extension in the list.
2. Open its details. The site access setting shows where it can run; set it to run only on click and it reaches a page only after you press its icon.
3. To uninstall it, choose Remove on the same page.

Questions people ask

What can Musashi Mercari Bridge access?

Specific sites only: 5 match patterns. It declares 6 browser permissions.

What data does Musashi Mercari Bridge collect?

The developer declares that it collects these kinds of data: Personally identifiable information, Financial and payment information, Authentication information, Personal communications, Website content. This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.

Has Musashi Mercari Bridge asked for more permissions over time?

The permissions this extension requests have not changed since we started watching it.

Does Musashi Mercari Bridge publish a privacy policy?

Yes, the store listing links to a privacy policy.