Claude Code used tools only 0.6% between 3 am and 6 am, author finds

Night‑time activity was largely tied to the author’s own input. Of the 6,886 uses from midnight to 6 am, 5,061 (73%) happened within 30 minutes of a user prompt, and only 1,825 (about 2.5%) occurred without any recent input. Including subcontracted AI would raise the midnight‑to‑6 am share to roughly 15%, but the 3‑am‑to‑6 am share stays near 1%. The data suggest Claude Code does not continue substantial work while the user sleeps, but rather stays active when the user is still awake.

The author provides a short Python script that reproduces the counts, encouraging others to verify their own AI‑assistant usage patterns. The findings challenge the common perception that AI agents can autonomously finish tasks overnight without user supervision.