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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 v2.1.178

Skill Directory Scoping

What

Skills can now be scoped to a specific directory subtree. When a scoped and unscoped variant of the same skill exist, the Skill tool picks the most-specific matching directory.

Details
  • Skill names with a directory scope appear as apps/web:deploy (directory prefix + colon + skill name)
  • The Skill tool prompt now instructs the model: "When a skill name has both a scoped and an unscoped variant, pick by the files you are working on: if the files are under a variant's directory, invoke that variant (most specific directory wins)"
  • Marketplace plugin entries can declare specific skill subdirectory paths relative to the plugin root
Evidence

Skill tool prompt update (search for "Some skills are scoped to a directory", "most specific directory wins"); plugin schema (search for "Path to a skill directory, relative to the plugin root")

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

See this entry in the whole of v2.1.178 →