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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.277 ·

System-prompt-block and request-content telemetry now fail closed

System-prompt-block and request-content telemetry no longer crash Claude Code if they fail

Under the hood Internal Changes
JSON All of v2.1.277
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
TelemetryArea: what it touches
Internal ChangesKind: in v2.1.277,
Internal ChangesSection of the release
What

Two internal telemetry functions, one that reports on system-prompt blocking (tengu_sysprompt_block) and a new wrapper around request-content telemetry, are now wrapped so that an error inside them no longer throws and interrupts anything. If telemetry fails, Claude Code just logs 'system prompt block telemetry failed' or 'request content telemetry failed' and moves on.

Why

Telemetry recording is meant to be a side effect, not something that can break your session. This change makes sure a bug in telemetry reporting can't cause a visible failure.

See this entry in the whole of v2.1.277 →

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