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gh-lagz0ne-local-install-skill/commands/update-skill.md
2025-11-30 08:36:46 +08:00

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---
name: update-skill
description: Update locally installed skills from their GitHub repositories
arguments:
- name: target
description: "Repository name to update, or --all to update all repos"
required: false
---
# Update Locally Installed Skills
You are updating Claude Code skills that were installed via `/install-skill`.
## Parse the Input
Parse the target argument: `$ARGUMENTS.target`
- If empty or not provided: List installed skills and ask which to update
- If `--all`: Update all updateable skills
- Otherwise: Update the specified skill or repo
## Update Process
### Step 1: Read registry
Read `.claude/local-plugins.yaml`.
**Migration check:** If `.claude/local-plugins.json` exists but `.yaml` doesn't, run migration first.
If no registry found:
```
No locally installed skills found.
Use /install-skill to install skills from GitHub.
```
### Step 2: Identify what to update
**If `--all`:**
- Get all skills from registry
- Group by mode for appropriate update method
**If specific target:**
- Check if it's a skill name in `skills` section
- Check if it's a repo name in `submodules` section
- If not found, list available options
**If no target:**
- List all skills with their mode and source
- Ask user which to update
### Step 3: Update based on mode
#### For submodule-based skills:
Update the entire submodule (updates all skills from that repo):
Capture old and new SHA:
```bash
# BEFORE fetch/pull
OLD_SHA=$(git -C .claude/submodules/<repo> rev-parse HEAD)
# Fetch and pull
git -C .claude/submodules/<repo> fetch origin
git -C .claude/submodules/<repo> pull origin <branch>
# AFTER pull
NEW_SHA=$(git -C .claude/submodules/<repo> rev-parse HEAD)
```
Update all skills from this repo in registry with new `commitSha`.
#### For copy-based skills:
Re-download and overwrite:
```bash
TEMP_DIR=$(mktemp -d)
git clone --depth=1 --branch <branch> https://github.com/<owner>/<repo>.git "$TEMP_DIR"
NEW_SHA=$(git -C "$TEMP_DIR" rev-parse HEAD)
```
Compare with stored `commitSha`. If same:
```
Skill "<name>" is already up to date (sha: <sha>)
```
If different:
```bash
rm -rf ".claude/skills/<skill-name>"
cp -r "$TEMP_DIR/<skillPath>" ".claude/skills/<skill-name>"
rm -rf "$TEMP_DIR"
```
Update `commitSha` in registry.
### Step 4: Verify integrity
**For submodule skills:**
- Check symlinks still point to valid targets
- If skill was removed from upstream repo, warn user
**For copy skills:**
- Verify files were copied successfully
### Step 5: Update registry
Write updated `.claude/local-plugins.yaml` with new `commitSha` values.
### Step 6: Report results
**No changes:**
```
Updating <skill-name>...
└── Already up to date (sha: abc123)
```
**Updated (submodule):**
```
Updating submodule <repo>...
├── Previous: abc123
├── Updated to: def456
├── Skills updated: brainstorming, tdd
└── Symlinks verified: OK
Skills updated successfully.
```
**Updated (copy):**
```
Updating skill <name>...
├── Previous: abc123
├── Updated to: def456
├── Files replaced in: .claude/skills/<name>
└── Status: Updated successfully
```
## Error Handling
**Submodule directory missing:**
```
Error: Submodule not found: .claude/submodules/<repo>
Run `git submodule update --init` or reinstall with /install-skill.
```
**Network error:**
```
Error: Failed to fetch updates
Check your network connection and try again.
```
**Skill not in registry:**
```
Error: Skill "<name>" not found in registry.
Installed skills:
- skill-a (copy mode)
- skill-b (submodule mode)
```