skillx update

Synopsis

skillx update [names...] [options]

Update installed skills to their latest versions. Uses SHA-256 content comparison for precise change detection.

Arguments

Argument	Required	Description
names	No	Skill name(s) to update. If omitted, checks all installed skills

Options

Flag	Default	Description
--agent <name>	—	Only update for a specific agent
--dry-run	—	Show what would be updated without applying changes
--skip-scan	—	Skip security scan for updated content
--yes	—	Auto-confirm (skip the update prompt)

Update Process

1. Fetch Latest

For each installed skill, skillx fetches the latest content from the original source. Local sources are skipped during update checks.

2. Compare

Each file is compared using SHA-256 hashes. Only skills with actual content changes are flagged for update.

3. Summary

A summary table is displayed:

Updates Available

  Name              Installed   Available   Changes
  pdf-processing    v1.2        v1.3        2 files changed
  formatter         v2.1        v2.2        1 file changed

Update 2 skill(s)? [Y/n]

4. Scan

Unless --skip-scan is specified, updated content is scanned through the security gate before applying.

5. Apply

Updated files are written to all agent injection paths. Progress is saved after each successful skill update, so a mid-update failure does not lose already-applied updates.

6. Sync

Updated source strings (including new version refs) are synced back to skillx.toml.

Dry Run

Use --dry-run to see what would be updated without making any changes:

skillx update --dry-run

This fetches and compares all skills but does not apply changes, modify installed.json, or update skillx.toml.

Examples

Update all installed skills

skillx update

Update specific skills

skillx update pdf-processing formatter

Check what would be updated

skillx update --dry-run

Update without prompts

skillx update --yes

Update only for a specific agent

skillx update --agent claude-code