Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.269 ·

Signed-cache identity telemetry added alongside shadow check

Signed-cache validation now also resolves an identity and reports it via a new telemetry event

TierUnder the hoodhow much it should matter to you
Useful1my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaElsewherewhat it touches
KindInternal Changesin v2.1.269,
Under the hood

Signed-cache validation now also resolves an identity and reports it via a new telemetry event

What

The existing signed-cache shadow validation (a background check that compares cache behavior without affecting results) now also resolves an identity asynchronously and fires a new telemetry event, tengu_signed_cache_identity, once that resolution completes, alongside the existing shadow-check event.

Why

The finding does not say what this identity represents or what it's used for beyond being reported in telemetry.

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 doubtWhat the resolved identity represents or is used for is not described.

See this entry in the whole of v2.1.269 →