ClaudeStats is a powerful add-on for Chrome designed specifically for users of Claude.ai, providing real-time insights into token usage, context window consumption, and plan limits. The extension features a collapsible sidebar directly integrated into the Claude interface, allowing users to monitor their session and weekly usage percentages, as well as alerting them when they approach critical limits in their context window. This tool is essential for developers, content creators, and researchers who rely heavily on Claude for their work and need to manage their resources effectively.

The add-on displays detailed statistics including per-message token counts, cumulative token usage across sessions, and a convenient popup for quick access to plan usage from any tab. ClaudeStats seamlessly fetches data from Claude's API without requiring additional credentials beyond the user's existing login. For a subscription fee of $6 per month, users can enhance their experience and ensure they stay within their plan limits while maintaining privacy, as the extension does not store or transmit conversation content.