Safely update projects with existing harness to the latest harness version. Version detection → Backup → Non-destructive update flow preserves existing settings and tasks while introducing latest features.
| Phase 1 | references/version-detection.md | Version detection and confirmation | | Phase 1.5 | references/breaking-changes.md | Breaking changes detection and fix | | Phase 2 | references/backup-and-update.md | Backup creation and file updates | | Phase 3 | references/verification.md | Verification and completion |
Harnessを安全にアップデート。バックアップ付きで安心安全。Use when user mentions '/harness-update', update harness, update version, or template updates. Do NOT load for: app updates, dependency updates, product version bumps. Source: chachamaru127/claude-code-harness.
Open your terminal or command line tool (Terminal, iTerm, Windows Terminal, etc.) Copy and run this command: npx skills add https://github.com/chachamaru127/claude-code-harness --skill harness-update Once installed, the skill will be automatically configured in your AI coding environment and ready to use in Claude Code, Cursor, or OpenClaw