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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 v2.1.233

/doctor now checks skills for broken frontmatter

Use it now
Useful4 Signal2
Skills

/doctor now spots skills whose frontmatter fails to parse and offers to repair it.

/doctor
What

The setup-health check run by /doctor scans project and user SKILL.md files for a YAML frontmatter block that fails to parse. Such a skill still loads, but every field is dropped: the name falls back to the directory name, the description to the first line of the body, and allowed-tools, model and disable-model-invocation stop applying with no warning at all. The check offers the frontmatter repair.

Details
  • Points at claude plugin validate <path> for checking many skills at once.
  • The skill's own description was updated to advertise the new check.
Evidence

Malformed skill frontmatter.

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 v2.1.233 →