Claude Usage Tracker Extension
Track your Claude.ai token usage across conversations with this browser extension.
Also check out my other extension, [Claude QoL] (includes summarizing, TTS, STT and way more).
Overview
This extension helps you monitor how much of your Claude usage quota remains. It calculates token consumption from various sources including uploaded files, project knowledge, chat history, and AI responses.
Installation
Chrome
Firefox
Desktop Client
Features
The extension tracks token usage from:
- Files - Documents uploaded to chats
- Projects - Knowledge files and custom instructions
- Personal preferences - Your configured settings
- Message history - Full conversation context, including the results of tools Claude ran (they stay in context for later messages)
- System prompts - Enabled tools (analysis, artifacts) on a per-chat basis
- MOST MCPs/Integrations - There are some limitations in cases where a "Knowledge" object is returned that I can't access, such as with web search
- Web search results - The full results are not exposed in the conversation history, so I can't track them properly
- Research - Most of it happens on the backend, so I can't track it
Privacy
The extension fetches your organization ID from claude.ai to synchronize usage data across devices using Firebase. For full details, see the privacy policy.
UI
Most elements in the chat UI (Namely the length, cost, estimate, caching status) have a tooltip explaining them further.
Building from source
Shared code lives in the claude-ext-common submodule, so clone with git clone --recurse-submodules (or run git submodule update --init in an existing clone). Then run build.bat, which produces the Chrome, Firefox and Electron zips in web-ext-artifacts/.