0Tokens

Monitor your Claude AI usage limits with automatic updates and notifications

0Tokens shows your Claude.ai usage at a glance, right in your browser toolbar. It reads your current usage percentage from the Claude usage page and displays it as a badge on the toolbar icon, so you always know how much of your limit is left without opening a tab and checking manually. Key features: - Live usage badge on the toolbar icon - Shows when your limit resets, e.g. "Resets in 4 hr 54 min", counting down live - Automatic background updates on a regular interval, so the badge stays current - Optional notifications when your usage reaches a threshold you choose - Lightweight, with a simple popup for details and settings Privacy first: 0Tokens runs entirely inside your browser. It reads only your usage percentage from the Claude usage page and stores your settings locally. It does not collect, transmit, sell, or share any data. There are no servers, no analytics, and no tracking. Your conversations are never read, copied, or sent anywhere. Permissions: - Access to claude.ai: read the usage value shown on your usage page - Tabs: refresh the usage page in the background to keep the badge current - Storage: save your settings locally - Alarms: schedule periodic background checks - Notifications: alert you when usage reaches your chosen threshold 0Tokens is an independent, unofficial tool and is not affiliated with or endorsed by Anthropic.