Is API Tester - REST Client Testing Tool safe?

Medium risk

API Tester - REST Client Testing Tool acts as a remote-controlled HTTP proxy and sends fetched response data to api.asotools.io.

The background service worker polls api.asotools.io for request jobs, then performs those requests from the browser using supplied URLs, methods, headers, and bodies. It base64-encodes the response body with status and response headers and posts that data back to api.asotools.io.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

ASOToolsv1.4.0Chrome Web Store
40Risk
Who publishes it

ASOTools - 2 other listings from the same operator, none carrying a finding

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

Publisher
ASOTools

Same store account

2 other listings published from this account, 11k+ users between them, none of them carrying a finding.

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 1.4.0. 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 every site you visit

    https://*/ and 1 more

  • Store data in your browser

    storage

  • Schedule its own background tasks

    alarms

  • Store an unlimited amount of data in your browser

    unlimitedStorage

  • Block and redirect the requests your browser makes

    declarativeNetRequest

Where it sends data

Destinations our analysis observed API Tester - REST Client Testing 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.asotools.io

    API Tester - REST Client Testing Tool sends data to api.asotools.io. 2 other extensions we have analysed send data here.

Updated 30 September 2026gjpgfhjgdajmdhialdclpkjmfkhbdchl