Privacy Policy

Last updated: June 20, 2026

Plain-language summary

Opero Bridge reads Amazon FBA fee numbers from one specific Amazon page, only when you click a button.
It sends those numbers to your Opero3P account so your margin math stays accurate.
It does not read your browsing history, Amazon login, orders, or customer data.
Your data is never sold, shared with third parties, or used for ads.
You can disconnect at any time from the Opero Bridge popup.

Who we are

Opero Bridge is a Chrome browser extension developed by Quickmitts Distribution, the legal entity behind Opero3P. Contact: sellerstack3p@gmail.com.

What information Opero Bridge accesses

Opero Bridge only operates on two specific websites:

sellercentral.amazon.com — specifically Amazon's FBA Revenue Calculator pages (both the authenticated calculator at /revcal and the guest calculator at /revcalpublic). Opero Bridge reads the ASIN and fee values displayed on that page (fulfillment fee, referral fee, storage fee, sale price) when you click the "Send to Opero3P" button.
opero3p.com — to receive an authentication token after you sign in and click Connect, and to send synced fee data to your account.

During the transition from our previous brand (SellerStack3P), Opero Bridge also retains host access to sellerstack3p.com so users on cached pages continue to work. This domain will be removed in a future version.

Opero Bridge does not access any other websites, read your browsing history, capture keystrokes, or run in the background.

What data Opero Bridge sends to Opero3P

When you click Send to Opero3P on Amazon's calculator page, Opero Bridge transmits the following to your Opero3P account:

The ASIN you looked up
The product name and main image displayed on the calculator (so your dashboard shows real names instead of bare ASINs)
The item price displayed on the calculator
The FBA fulfillment fee
The Amazon referral fee
The monthly storage fee
A timestamp of when the sync occurred

No other data leaves your browser.

What Opero Bridge stores locally

Opero Bridge uses chrome.storage.local (your browser's local storage) to remember:

An authentication token (JWT) for your Opero3P account
The email address associated with that account
The timestamp of when you connected

This data stays on your device. You can clear it any time by clicking Disconnect in the Opero Bridge popup, or by removing the extension from Chrome.

Authentication and security

The authentication token is generated by Opero3P after you sign in. It only grants permission to update your own ASIN fee data — it cannot read your account password, payment information, or perform other account actions. Tokens expire after one year, after which you'll be asked to reconnect.

All communication between Opero Bridge and Opero3P happens over HTTPS.

What Opero Bridge does NOT do

It does not read your Amazon password or login credentials.
It does not access your Amazon orders, customers, inventory reports, or any Seller Central pages other than the FBA Revenue Calculator.
It does not track your browsing history or activity on other websites.
It does not automatically sync without your explicit click.
It does not include analytics, advertising trackers, or third-party scripts.
It does not sell or share your data with anyone.

Permissions explained

Opero Bridge requests the following Chrome permissions:

storage — to save your authentication token locally so you don't have to sign in every time.
Host permission for sellercentral.amazon.com — to read the fee values displayed on Amazon's FBA Revenue Calculator pages and inject the "Send to Opero3P" button.
Host permission for opero3p.com — to receive the authentication token after you sign in and to send your synced fees to your account.
Host permission for sellerstack3p.com — transitional, retained during the rebrand from our previous domain. To be removed in a future version.

Data retention

Fee data synced to Opero3P is retained as part of your Opero3P account data, for as long as your account is active. You can delete this data at any time from within the Opero3P app by editing or removing the ASIN. If you close your Opero3P account, all associated data is removed.

Children's privacy

Opero Bridge is intended for use by Amazon sellers, who must be 18+ to have a Seller Central account. We do not knowingly collect data from anyone under 18.

Changes to this policy

We may update this policy as the extension evolves. Material changes will be posted here with a new "Last updated" date. Continued use of Opero Bridge after updates constitutes acceptance.

Contact

Questions about privacy? Email sellerstack3p@gmail.com.