Privacy Policy

What CoworkGuard does

CoworkGuard is a local privacy and security tool that monitors outbound network requests from your browser to api.anthropic.com and warns you when potentially sensitive data may be included in those requests.

Data we do not collect

• We do not collect, transmit, or store any personal data
• We do not log the content of your messages or requests
• We do not track your browsing history
• We do not send data to any remote server operated by CoworkGuard
• We do not use analytics, crash reporting, or third-party tracking

Data stored locally on your device

CoworkGuard stores the following data only on your local machine, in ~/.coworkguard/:

Data	Purpose	Raw content stored?
Audit log entries	Local review of intercepted requests	No — only SHA-256 hash, byte size, pattern type, severity, and redacted preview
Settings file	Your configuration preferences	Yes — contains only your chosen settings, no personal data

Raw payload content is never stored. When a request is scanned, CoworkGuard stores only a SHA-256 hash of the payload (which cannot be reversed), the byte size, the type and severity of any detected pattern, and a redacted preview showing only the first 2 and last 2 characters of any match.

Chrome extension permissions

Permission	Why it is needed
tabs	Detect when Claude.ai or Cowork is open to determine active session status
activeTab	Inject the warning banner into the current tab when a sensitive domain is visited
storage	Save settings and audit log locally using chrome.storage.local
webRequest	Inspect outbound request headers to detect CoworkGuard proxy tags
notifications	Show a browser notification when Cowork is active on a sensitive domain
<all_urls>	Inject warning banners into any page navigated to while Cowork is active

Third parties

CoworkGuard does not share data with any third party. The extension communicates only with localhost:7070 — the local CoworkGuard server running on your own machine — and with the content of tabs you are currently viewing, solely to inject warning banners.

It does not communicate with any external server operated by CoworkGuard or any partner.

Children's privacy

CoworkGuard is a developer and security tool not directed at children under 13.

Changes to this policy

If this policy changes materially, we will update the date above and note the changes in the Chrome Web Store listing description.

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