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Sweep 25 Sep 2026 · 19:33Z Build v2.1.283 504 read Stable v2.1.274 Latest v2.1.283 Next v2.1.283 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.281 ·

Reminder-fold, tool-input-copy and context-announcement telemetry

New usage reporting covers reminder folding, copied tool inputs and the estimated size of each attachment

Under the hood Internal Changes
JSON All of v2.1.281
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
TelemetryArea: what it touches
Internal ChangesKind: in v2.1.281,
Internal ChangesSection of the release
What

Claude Code sends usage reports (telemetry) about its own behaviour. Several additions:

  • reminderFold: recorded in prompt snapshots, behind the flag tengu_foamy_spring, with a tengu_reminder_fold_recorded event
  • toolInputCopies: added to the deferred_tools_record report
  • tengu_context_announcement: a new event giving an estimated token count for each attachment

Separately, the handling for a cancelled tool run now also covers image errors and model errors, not only safety-monitor blocks.

Why

The reporting changes add nothing you can see. The cancellation change means image and model errors are now handled by the same path as other cancelled tool runs.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtThe finding does not say what a reader sees differently when a tool run is cancelled by an image or model error.

See this entry in the whole of v2.1.281 →

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