Claude Sidebar Monitor is a free Chrome extension designed to enhance your interaction with Claude AI by providing real-time monitoring of your usage limits. This lightweight tool integrates seamlessly into the Claude AI sidebar, allowing users to track their session and weekly usage limits without needing to navigate away from their current conversation. The extension features a sidebar widget that displays usage percentage in both collapsed and expanded modes, ensuring that users can easily keep an eye on their limits at a glance.

Key functionalities include a dynamic icon that reflects usage percentage, health alerts for in-page notifications, and a privacy-first approach that ensures all data remains on the user's device. The extension adapts to both dark and light themes, enhancing user experience. Additionally, it operates under an open-source model, ensuring transparency and security for users concerned about data privacy.