Is A/B Pre-test Calculator by Speero safe?

Low risk

A/B Pre-test Calculator by Speero sends calculator inputs and an embedded API token to Speero's Cloud Functions endpoint.

When you use the calculator, the extension sends monthly traffic, conversion-rate parameters, variant counts, tail type, confidence, power, and relative settings to Speero's Cloud Functions endpoint. The same request includes a hardcoded Speero API token as an api_token query parameter.

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

15Risk
Who publishes it

CXL Ageny LLC - 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
Speero
Declared legal entity
CXL Ageny LLC
Registered address
901 S MoPac Expy, Austin, TX 78746, US
Registered contact
Speero Tools

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. 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 accounts.google.com

    https://accounts.google.com/o/oauth2/token

  • Store data in your browser

    storage

  • Sign you in with your Google account

    identity

Where it sends data

Destinations our analysis observed A/B Pre-test Calculator by Speero 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.

  • us-central1-speero-dev.cloudfunctions.net

    A/B Pre-test Calculator by Speero sends data to us-central1-speero-dev.cloudfunctions.net. No other extension we have analysed sends data here.

Updated 30 September 2026lmcdffjpijcfeamjmldmdncejdnifgdf