Privacy Policy — CS2 Sniper Browser Extension

Last updated: 2026-04-27

This page describes what data the CS2 Sniper browser extension reads, what it sends, and what it stores. The extension is built and operated by the same team behind cs2sniper.org.

What the extension does

CS2 Sniper overlays Buff163 reference prices on item-listing cards across supported CS2 marketplace websites. Its single purpose is to help users compare a marketplace's asking price to the Buff163 lowest listing and highest buy order at a glance.

Data the extension reads from your browser

When you visit a supported marketplace page, the extension reads the listing-card DOM to extract two pieces of information per item:

• The item's full Steam market_hash_name (e.g. AK-47 | Redline (Field-Tested))
• The listing price displayed on the card

No other DOM content is read. No form input is observed. No keystrokes, mouse activity, or browsing history is collected. Steam credentials, marketplace account info, payment details, and personal identifiers are never accessed.

Data the extension sends to remote servers

The extension makes exactly two kinds of outbound requests:

• Buff163 price snapshot — once per hour, the extension's background service worker fetches a precomputed JSON snapshot from https://cs2sniper.org/api/ext/snapshot. The request body contains no user data. The response is a list of item-name → price entries used to populate the on-page overlay locally.
• Currency exchange rates — once per day, the extension fetches https://api.frankfurter.app/latest?from=USD to convert USD prices into your local currency on non-USD marketplaces. The request contains no user data. Frankfurter is a free public ECB-rates service; their privacy policy: frankfurter.app/legal.

The extension does not send the names of items it sees on your screen to any server. The Buff163 snapshot is a bulk download of all items; the lookup happens locally in your browser.

Data the extension stores

All data is stored locally in your browser using Chrome's storage APIs:

• The latest Buff163 price snapshot (in IndexedDB)
• The latest FX rates (in chrome.storage.local)
• Timestamps used to schedule the next refresh

None of this data leaves your computer. Uninstalling the extension deletes it.

What we do NOT collect

• Personal identifiers (name, email, address, phone number)
• Steam account information, login credentials, session tokens
• Marketplace account information of any kind
• Payment or financial information
• Browsing history outside the supported marketplace pages
• Health, location, or biometric data
• Cookies (we set none)
• Telemetry, analytics, or crash reports

Third-party services

The extension communicates with two third-party endpoints, both for data fetching only:

• cs2sniper.org — our own backend, hosting the price snapshot.
• api.frankfurter.app — public ECB FX-rate API.

No code is loaded from either service. Both responses are JSON data.

Children's privacy

The extension is not directed at children under 13. We do not knowingly collect data from children, and given that no personal data is collected from any user there is nothing to delete.

Changes to this policy

If we update this policy, we will publish the new version at the same URL and bump the "last updated" date above. Material changes will be reflected in the extension's release notes on the Chrome Web Store.

Contact

Questions about this policy or the extension's privacy practices?
Reach us at seanworkspace488@gmail.com.