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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.246 ·

Skill bodies load on demand instead of shipping in the main bundle

Skill instructions load only when you use a skill, so startup and listing cost nothing.

You'll notice Improvements
JSON All of v2.1.246
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SkillsArea: what it touches
ImprovementsKind: in v2.1.246,
ImprovementsSection of the release
What

Skill instructions are no longer held in memory at startup. Listing skills now costs nothing, and the full text is fetched only when you actually invoke one.

Details
  • Only the short skill description and its menu entry stay in the main bundle; the body and any bundled files are pulled from a separate chunk on first use.
  • The PR-review command, for example, loads its instruction text and its file set through a dynamic import rather than holding them in scope.
  • There are 1060 of these on-demand chunk loads in this build; the previous build had none.
  • Unconditional, with no setting to opt out.
Evidence

files: () => Ur().then((e) => e.SKILL_FILES),

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.246 →

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