Claude Code v2.1.280 · 22 Sep 2026
New session-initiator / wakeup-source telemetry categories
New telemetry categories record why and how a session was started or woken up
Under the hood Tier: how much it should matter to you
1 Useful: my rating, 1 to 5
1 Signal: worth watching, 1 to 5
Telemetry Area: what it touches
Internal Changes Kind: in v2.1.280, 22 Sep 26
Internal Changes Section of the release
What
Claude Code now records, in telemetry, a category explaining what triggered a session to start. The options include:
user
scheduled-task
sleep-auto-resume
quit-auto-resume
remote-restart-auto-resume
ci-monitor
dispatch
side-session-brief
side-session-start
side-session-wake
other
A separate wakeup_source field records whether a wakeup came from loop_wakeup or schedule_wakeup.
Why
This gives more detailed visibility into how sessions get started or resumed, whether by a person, a scheduled task, auto-resume after sleep or a quit, or other automated triggers.
See this entry in the whole of v2.1.280 →
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MCP connect failure telemetry now includes an extra field via Mae(n)
Under the hood Telemetry
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Plugin install/update telemetry now records git commit SHA
Under the hood Telemetry