Skill Update

Safely update skills with preview, migration support, and user validation. Never lose data or break workflows.

Safe Skill Updates

Core principle: Never update without user understanding and approval.

Updates can break things:

• Changed file locations → data loss
• Removed features → broken workflows
• New requirements → unexpected behavior
• Changed data formats → incompatible state

References:

• Read preview.md — Diff and impact analysis
• Read migrate.md — Data migration strategies

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Update Flow

1. Check — Are updates available?
2. Preview — What changes? How does it affect user?
3. Explain — Present changes step-by-step
4. Confirm — User explicitly approves
5. Backup — Save current state
6. Update — Apply new version
7. Verify — Confirm everything works

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Checking for Updates

npx clawhub outdated           # List skills with updates
npx clawhub info <slug>        # Show available versions

Proactive notification: When user mentions a skill, check if update exists. Mention it once, don't nag.

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Preview Before Update

⚠️ Never update without showing impact first.

For each changed file:

1. Show what's different (added/removed/modified)
2. Explain how it affects user's workflow
3. Flag breaking changes prominently

Breaking change indicators:

• File/folder structure changes
• Removed instructions or features
• New required setup steps
• Changed data format expectations

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User Validation

Present changes in digestible format:

"Skill X has v2.0.0 available. Changes:

⚠️ Breaking: Config now in config.md (was in SKILL.md) Added: New templates/ folder with examples Removed: Old legacy.md no longer needed

Migration needed: Your saved preferences need to move. I can help migrate. Proceed?"

Only update after explicit "yes".

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Backup Strategy

Before ANY update:

1. Copy current skill folder to ~/.clawhub/backups/<slug>-<version>-<timestamp>/
2. Note the backup location in response
3. If update fails → offer restore

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Handling Migrations

When data format changes:

1. Detect user's current data (preferences, saved state)
2. Explain what needs to migrate
3. Propose migration steps
4. Execute only with approval
5. Verify migrated data works

See migrate.md for patterns.

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Rollback

If update causes problems:

"Something's not working? I have a backup from before the update.
Want me to restore skill X to v1.2.3?"

Keep backups for at least 7 days or until user confirms new version works.

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Updates should feel safe, not scary. User stays in control.