audit-plugin
Performs a deep review of the Claude Code plugin, skill, or sub-agent defined in the current project against official best practices. Documents findings as GitHub issues and writes a prioritised fix plan to the project CLAUDE.md. Use when the user says audit this plugin, review this skill, check this agent, or audit addon.
What this skill does
# Audit Plugin
Project: !`basename $(git rev-parse --show-toplevel 2>/dev/null) 2>/dev/null || basename $PWD`
Branch: !`git branch --show-current 2>/dev/null || echo "unknown"`
Reviews the Claude Code addon in the current project (plugin, skill, sub-agent, or a combination)
against official Claude Code best practices. Generates actionable GitHub issues and a prioritised
fix plan.
## Step 0: Pre-flight check
```bash
gh auth status 2>&1 || { echo "ERROR: gh is not authenticated. Run: gh auth login"; exit 1; }
```
## Step 1: Identify what kind of addon this project defines
Scan for known Claude Code addon files:
```bash
find . -not -path './.git/*' \( \
-name 'plugin.json' -path '*/.claude-plugin/*' \
-o -name 'SKILL.md' -path '*/skills/*' \
-o -name '*.md' -path '*/agents/*' \
\) 2>/dev/null
```
Read each file found. Build a mental model of:
- Plugin manifest (`.claude-plugin/plugin.json`) — name, version, declared agents/skills
- Skills (`skills/<name>/SKILL.md`) — frontmatter fields, body structure, tool declarations
- Agents (`agents/<name>.md`) — frontmatter fields, description examples, tool restrictions
## Step 2: Fetch current best-practice documentation
Use WebFetch to retrieve up-to-date guidance from these known URLs:
- Skills: `https://code.claude.com/docs/en/skills`
- Sub-agents: `https://code.claude.com/docs/en/agents`
- Plugins: `https://code.claude.com/docs/en/plugins`
If any URL returns an error, use WebSearch to find the current equivalent under `code.claude.com`.
Summarise the key quality criteria from each source.
## Step 3: Evaluate against best practices
For **plugin.json**, check:
- Required fields present: `name`, `version`, `description`, `author`, `license`
- `minVersion` set to a current compatible value
- Keywords are relevant and searchable
- `description` is concise and accurate
For **each SKILL.md**, check:
- `description` is a single unbroken line under 1,536 characters (combined with `when_to_use`)
- `allowed-tools` is set and follows least-privilege (only tools the skill actually needs)
- Body is under 500 lines; large reference content moved to separate files
- Shell injection blocks (`` !`command` ``) are used where live context would help
- Step numbering is clear and actionable
- Code blocks specify a language
- Prose lines are ≤ 120 characters
- No personalised language in formal content (no "you", "your" in instructions)
For **each agent `.md`**, check:
- `description` is a quoted single-line string with proper `<example>` blocks for auto-delegation
- `model`, `color`, `maxTurns`, `memory`, `tools` and `initialPrompt` fields are present where appropriate
- Agent body is clear, focused, and actionable
- Description examples use current delegation language (no "Task tool" narration)
- `tools` list follows least-privilege
## Step 4: Generate GitHub issues
For each distinct finding, create a GitHub issue:
```bash
gh issue create \
--title "<type>: <brief description>" \
--body "$(cat <<'EOF'
## Finding
<description of the problem>
## Expected
<what best practice requires>
## Current
<what the file actually has>
## Suggested fix
<concrete change to make>
EOF
)" \
--label "enhancement"
```
Group closely related findings into a single issue where it makes sense.
Use `--label "bug"` for broken or non-compliant fields, `--label "enhancement"` for improvements.
Note the issue numbers as you go.
## Step 5: Write prioritised fix plan to CLAUDE.md
Append or update a section in the project `CLAUDE.md` under the heading
`## Audit Findings — <today's date>`:
```markdown
## Audit Findings — YYYY-MM-DD
Issues generated from `/audit-plugin` review. Suggested fix order:
### Group 1 — Correctness (fix first)
- #N: <title>
- #N: <title>
### Group 2 — Best-Practice Compliance
- #N: <title>
- #N: <title>
### Group 3 — Quality Improvements
- #N: <title>
- #N: <title>
```
Order groups by: correctness blockers first, then compliance, then polish.
## Step 6: Report summary
Output a brief summary:
- Total issues created (with links)
- Top-priority fix
- Link to the CLAUDE.md section added
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