When are you actually most focused with Claude Code?
Find your optimal working window based on real session data.
cc-peak v1.0.0
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When are you most focused? Last 90 days.
▸ Your Peak Window
Fri · 9pm–1am
(highest combined session hours in any 4h block)
▸ Hour-of-Day Heatmap (when sessions start)
9pm ▓▓▓▓▓▓▓▓ 19.0h ←
10pm ▓▓▓▓▓▓ 13.5h
11pm ▓▓▓▓▓▓▓▓▓▓▓▓ 27.7h ← peak
12am ▓▓▓▓▓▓▓▓▓ 21.3h
▸ Day-of-Week Breakdown
Mon ██████████████████ 41.4h
Fri ████████████████████ 46.9h ← peak
...
▸ Insights
🦉 Night owl — most activity between 10pm–5am
🗓️ Weekday focused — 74% of work on weekdays
📈 Regular rhythm — active 53% of days
npx cc-peak # Last 90 days
npx cc-peak --days=30 # Last 30 days
npx cc-peak --json # JSON outputAll other cc-toolkit tools answer "how much?" This one answers "when?"
Once you know your peak window, you can:
- Schedule complex tasks during your most focused hours
- Avoid starting deep work sessions outside your window
- Plan your day around when you're actually productive
One of 36 free tools for understanding your Claude Code usage.
MIT