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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 v2.1.274 ·

New silent fallback lane and arm_source telemetry for retried model turns

A quieter, server-controlled retry path for refused or failed model turns now records which mechanism armed it

Group of 3 Nothing to try yet Notable No documentation found In Development
JSON All of v2.1.274
Nothing to try yetTier: how much it should matter to you
3Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
Model FallbackArea: what it touches
In DevelopmentKind: in v2.1.274,
What probably matters to youSection of the release

Unclear None of the related gates (tengu_convolute_arcades_retry, tengu_convolute_arcades_tools, tengu_fallback_sweep_tools, tengu_refusal_fallback_triggered) have been read, so nothing can be said about whether this silent lane is active for any account.

What

  • A new "silent lane" fallback mechanism sits alongside the existing, user-visible refusal-fallback retry. It can be armed either by a remote config key (convolute_arcades) or by the server sending a response header (x-cc-tender-quilt: 1), which the client latches onto.
  • When armed this way, retries are logged under differently-named, less descriptive telemetry events instead of the usual, plainly-named refusal-fallback events.
  • Telemetry events, including the invalid-content-policy refusal event and tengu_api_success, now attach an arm_source field identifying which mechanism (config key or server header) armed the retry.
  • tengu_api_success also gains a tender_quilt_header flag, set to true when a low-priority/background header condition is present.

Why

This lets Claude Code retry refused or failed turns through a quieter path when the server signals it should, while telemetry now records exactly which mechanism triggered the retry, which helps diagnose why a retry happened.

Read from
Names in the bundleconvolute_arcadesx-cc-tender-quilt
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 doubtNone of the related gates (`tengu_convolute_arcades_retry`, `tengu_convolute_arcades_tools`, `tengu_fallback_sweep_tools`…

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