claude-usage-tracker

Privacy Policy — Claude Usage Tracker

Last updated: 2026-04-29

Summary

Claude Usage Tracker collects no personal data and sends nothing to any server. All data stays inside your browser using the Chrome storage.local API.

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What data is stored

The extension stores the following locally in your browser only:

Data	Purpose
Token counts (input / output) per conversation turn	Computing usage totals and trends
Timestamp, date, hour of each turn	Time-of-day heatmap and daily/weekly charts
Product tag (chat / projects / cowork / design)	Per-product breakdown
Conversation ID (anonymous, from URL)	Deduplication only
Your settings (tracked products, alert thresholds)	Restoring your preferences

No names, email addresses, message content, or account identifiers are ever stored or transmitted.

How data is collected

The extension injects a content script into claude.ai pages. This script intercepts the browser’s fetch API to read token usage metadata from Anthropic’s streaming API responses — specifically the input_tokens and output_tokens fields. Message content is never read, stored, or transmitted.

Where data goes

• Nowhere outside your device. The extension has no backend server.
• Data is written to chrome.storage.local, which is isolated to your browser profile.
• Data is automatically pruned after 90 days.
• You can export or delete all data at any time from the Settings page.

Permissions used

Permission	Why
storage	Save usage events and settings locally
notifications	Alert you when usage crosses your thresholds
alarms	Run daily cleanup of data older than 90 days
host_permissions: https://claude.ai/*	Inject the fetch interceptor on claude.ai

Third parties

None. The extension does not use analytics, crash reporting, advertising, or any third-party SDK.

Changes to this policy

If the data practices change materially, the version number in manifest.json will be bumped and this policy updated. Continuing to use the extension after an update constitutes acceptance.

Contact

Open an issue at github.com/Ashutosh-Sharma-IN/claude-usage-tracker.

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This extension is an independent open-source project and is not affiliated with, endorsed by, or connected to Anthropic.