Privacy Policy

Effective July 10, 2026

Slabscout is a browser extension that identifies trading cards on live streams and shows market pricing. It is built to know as little about you as possible.

What we don't do

No accounts, sign-ups, or passwords.
No browsing-history collection. The extension only acts on Whatnot pages, and only when you press the scan key.
No ads, no analytics trackers, no sale of any data to anyone.

What happens when you scan

The video frame you capture is sent directly from your browser to Google's Gemini API using your own API key, to identify the card and visually rank matching catalog references. The reference images are public card images fetched by the extension and batched into contact sheets for that comparison. Google's handling of free-tier requests is governed by Google's terms (free-tier content may be used to improve their services).
The card's text identity and a smaller card crop are sent to the Slabscout pricing service. The crop is relayed to eBay's visual-search API to verify the match, processed in memory, and not stored by Slabscout. The request is not linked to your identity.
Sold and ask prices shown to you come from eBay's public marketplace APIs and licensed pricing data.

What we store

In your browser only: your API keys and settings (Chrome extension storage). They never touch our servers.
On our servers: anonymous card-market data (which cards were priced and the resulting market data), used to make pricing faster and better for everyone. Captured card crops are not stored. Nothing that identifies you.

Permissions the extension asks for

whatnot.com — to add the overlay and read the stream frame you scan.
storage — to keep your settings locally.
generativelanguage.googleapis.com — to call Gemini with your key.
PriceCharting and eBay image hosts — to display and compare public catalog and listing images.
our pricing API — to fetch card market data.

Contact

Questions or deletion requests: luis.mikej93@gmail.com.

Not affiliated with Whatnot, eBay, PSA, or Google.