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Version: 0.57.0

CC-HK-023: Once Field Not Boolean - Claude Hooks

Summary​

  • Rule ID: CC-HK-023
  • Severity: LOW
  • Category: Claude Hooks
  • Normative Level: MUST
  • Auto-Fix: Yes (unsafe)
  • Verified On: 2026-04-23

Applicability​

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

Evidence Sources​

Test Coverage Metadata​

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

Examples​

The following examples demonstrate what triggers this rule and how to fix it.

Invalid​

{ "type": "command", "command": "echo hi", "once": "yes" }

Valid​

{ "type": "command", "command": "echo hi", "once": true }