claude-limits-tracker by Mouad El Fakir

Claude Limits Tracker adds a small, draggable widget to claude.ai that mirrors your account's usage limits — 5-hour session, weekly (all models), and weekly Opus-only — so you can see how close you are to a limit without digging through menus.

• Pulls live usage numbers from claude.ai's own usage endpoint, using your existing logged-in session — no separate login or account setup needed.
• Starts as a small pill you can drag anywhere on screen; click to expand into a full breakdown with reset times.
• Position, expanded/collapsed state, and on/off toggle are remembered locally between sessions.
• Only runs on claude.ai — inactive on every other site.
• Collects and transmits no data anywhere: everything stays in your browser's local storage.

Note: this relies on claude.ai's internal API, which isn't a publicly documented/supported interface, so it may occasionally need updates if Anthropic changes it.