marketplace-audit

Marketplace Audit

Run a comprehensive structural validation of any Claude Code plugin marketplace. Works against any project that follows the standard .claude-plugin/marketplace.json + plugins/<name>/ layout.

Audit steps

Step 1: Run the validation script

Execute the audit script to get a machine-readable report:

# Validate only
python "${CLAUDE_PLUGIN_ROOT}/skills/marketplace-audit/scripts/audit_marketplace.py"

# Validate and auto-fix color issues (invalid, missing, disharmonious)
python "${CLAUDE_PLUGIN_ROOT}/skills/marketplace-audit/scripts/audit_marketplace.py" --fix

The script resolves the target project root by walking up from the script location, or respects a --project-root <path> flag if invoking it from a different marketplace than where the plugin is installed.

Step 2: Review findings

The script checks:

1. File existence -- every path in marketplace.json agents / skills / commands arrays resolves to a real file or directory
2. Orphaned files -- agent .md files, skill directories, or command .md files on disk not registered in any plugin
3. Frontmatter validation
   • Agents: must have name, description, model, color
   • Skills: must have name, description
   • Commands: must have description
4. Color consistency and harmony
   • All agents within a plugin should use the same color
   • Warn when a single color is overused across too many plugins (threshold configurable)
   • Report color distribution across all plugins
   • Valid colors: red, blue, green, yellow, purple, orange, pink, cyan
   • Use --fix to auto-correct invalid or missing colors
5. Naming conventions
   • All names are kebab-case
   • Agent filename matches frontmatter name field
   • Plugin directory name matches marketplace.json name field
   • Skill directory name matches frontmatter name field
   • Workflow command output directories match command filename (e.g., feature-e2e.md typically writes to .feature-e2e/)
   • No naming collisions between commands in different plugins
   • No em dash characters anywhere (use hyphen - or double hyphen --)
6. Cross-reference consistency (project-specific, best-effort)
   • If a git remote is configured, suggest that the marketplace name align with the repo name (warning only)
   • If a CLAUDE.md is present at the project root, suggest that its project header match the marketplace name (warning only)
   • These are advisory -- different marketplace maintainers have different conventions
7. Marketplace.json schema
   • Every plugin has: name, source, description, version, author, license, keywords, category, strict
   • No duplicate plugin names
   • Duplicate keywords across plugins (warning only -- may be intentional)
8. Version sanity
   • All versions are valid semver (MAJOR.MINOR.PATCH)
   • metadata.version is present at the root

Step 3: Fix issues

Address findings by severity:

• CRITICAL: Missing referenced files, broken paths, missing required frontmatter fields, duplicate plugin names
• WARNING: Orphaned files, naming mismatches, overlapping keywords, color inconsistencies, git/CLAUDE.md alignment
• INFO: Suggestions for improvement, consolidation opportunities

Step 4: Evaluate color harmony

After the script passes, review the color distribution and evaluate semantic harmony:

1. Read each plugin's description and category from marketplace.json
2. Consider domain: similar domains should have visually related colors; distinct domains should contrast
3. Guiding principles:
   • Warm colors (red, orange, yellow, pink) for creative / outward-facing plugins
   • Cool colors (blue, cyan, purple) for analytical / development plugins
   • Neutral (green) for tooling / infrastructure
4. If colors feel disharmonious, propose a new assignment with reasoning and apply after user confirmation

Step 5: Re-validate

Run the script again after fixes to confirm a clean audit.

Notes for marketplace maintainers

• This skill is marketplace-agnostic. It assumes the standard Claude Code plugin layout (.claude-plugin/marketplace.json + plugins/<name>/) but makes no assumption about which plugins, authors, or upstream sources are specific to your marketplace.
• Plugin categories, default author, upstream sources, and any project-specific conventions should be documented in your CLAUDE.md at the project root. The script and this skill respect those conventions but do not enforce a particular taxonomy.