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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.38

Conditional Skills

What

Skills can now activate automatically when you work with files matching specific patterns.

Details
  • Skills are stored with file pattern matchers
  • When a matching file is touched, the skill activates automatically
  • Log message shows: [skills] Activated conditional skill '<name>' (matched path: <path>)
  • Tracked via telemetry for optimization
Evidence

Skill activation system (search for "Activated conditional skill")

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.38 →