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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 v2.1.275 ·

Cache-key comparators for tool/hook/skill descriptions gain explicit size measurement

Internal caching for tool/hook/skill descriptions now explicitly measures text size

Under the hood Internal Changes
JSON All of v2.1.275
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.275,
Internal ChangesSection of the release

Unclear The finding does not say what the added size measurement is used for or what behavior it changes.

What

Internal comparators that decide when a cache should be invalidated for tool descriptions, hook text, prompt sections, and skill text now also explicitly measure the size of that text, in addition to the equality checks they already did.

Why

This is an internal caching refinement with no directly described effect on user-facing behavior.

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 the added size measurement is used for or what behavior it changes.

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