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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.268 ·

Frontmatter-shadow telemetry no longer conflates surface and detail

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Frontmatter-shadow telemetry now logs surface and detail as separate values instead of one value duplicated into both

TierUnder the hoodhow much it should matter to you
Useful1my rating, 1 to 5
Signal0worth watching, 1 to 5
AreaTelemetrywhat it touches
KindInternal Changesin v2.1.268,
Under the hood

Frontmatter-shadow telemetry now logs surface and detail as separate values instead of one value duplicated into both

What

The internal helper that logs frontmatter_shadow telemetry events gained a fourth parameter, so the detail field it logs is now a distinct value rather than being derived from the same input as the surface field.

Why

This makes the frontmatter_shadow telemetry more precise, since surface and detail can now carry different information instead of always matching.

See this entry in the whole of v2.1.268 →

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