Is SENTENCIFY: Multi Language AI Writing & Paraphrasing Tool safe?

Clean risk

SENTENCIFY sends selected page text and rewrite results to Mixpanel analytics.

When you select text and use its paraphrasing controls, the content script records analytics events that include the selected sentence, prompts, copied text, and generated rewrite choices. Those events are sent to api-js.mixpanel.com/track from a script injected on all URLs.

bookendv2.7.12Chrome Web Store
1Risk
Who publishes it

주식회사 북엔드 - no other listings under this identity

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
bookend
Declared legal entity
주식회사 북엔드
Registered address
대학로179번길 7-12, D3동 102호, 유성구, 대전광역시 34138, KR
Registered contact
최현수

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 2.7.12. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on localhost:8081

    http://localhost:8081/*

  • Read and change your data on api.sentencify.ai

    https://api.sentencify.ai/*

  • Read and change your data on localhost:3001

    http://localhost:3001/*

  • Store data in your browser

    storage

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

    tabs

  • Show a panel beside the page

    sidePanel

  • Read and change cookies, including the ones that keep you signed in

    cookies

Where it sends data

Destinations our analysis observed SENTENCIFY: Multi Language AI Writing & Paraphrasing Tool contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • api-js.mixpanel.comwidely used

    SENTENCIFY: Multi Language AI Writing & Paraphrasing Tool sends data to api-js.mixpanel.com. A widely used service: 47 other extensions we have analysed send data here.

Updated 30 September 2026clfeejjmcegnmnhoaaffboddkajhenep