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CC-HK-014: Once Outside Skill/Agent Frontmatter

Summary​

  • Rule ID: CC-HK-014
  • Severity: MEDIUM
  • Category: Claude Hooks
  • Normative Level: SHOULD
  • Auto-Fix: No
  • Verified On: 2026-02-07

Applicability​

  • Tool: claude-code
  • Version Range: unspecified
  • Spec Revision: unspecified

Evidence Sources​

Test Coverage Metadata​

  • Unit tests: true
  • Fixture tests: true
  • E2E tests: false

Examples​

The following examples are illustrative snippets for this rule category.

Invalid​

{
  "hooks": [
    {
      "event": "PreToolUse",
      "matcher": "*"
    }
  ]
}

Valid​

{
  "hooks": [
    {
      "event": "PreToolUse",
      "matcher": "Write",
      "command": "./scripts/validate.sh",
      "timeout": 30
    }
  ]
}