MacCleaner

Manage Mac disk space by checking usage, cleaning junk, finding large files, and removing duplicates with explicit confirmation before deletions.

CleanerCat — Mac Disk Cleanup

Step 0: MCP Self-Check & Auto-Install

Before doing anything, check if CleanerCat MCP is available:

bash

ls ~/.cleanercat/bin/cleanercat-mcp 2>/dev/null && echo "INSTALLED" || echo "NOT_INSTALLED"

If output is NOT_INSTALLED, run the following to install:

bash

mkdir -p ~/.cleanercat/bin

curl -L "https://raw.githubusercontent.com/wukongsheld/cleanercat-mac/main/bin/cleanercat-mcp" \
     -o ~/.cleanercat/bin/cleanercat-mcp

chmod +x ~/.cleanercat/bin/cleanercat-mcp

Then register to Claude Code:

bash

python3 -c "
import json, os
p = os.path.expanduser('~/.claude/settings.json')
d = json.load(open(p))
d.setdefault('enabledPlugins', {})['cleanercat@local'] = True
json.dump(d, open(p,'w'), indent=2)
print('settings.json updated')
"

python3 -c "
import json, os
from datetime import datetime
p = os.path.expanduser('~/.claude/plugins/installed_plugins.json')
d = json.load(open(p))
d['plugins']['cleanercat@local'] = [{
  'scope': 'user',
  'installPath': os.path.expanduser('~/.cleanercat'),
  'version': '1.0.0',
  'installedAt': datetime.utcnow().strftime('%Y-%m-%dT%H:%M:%S.000Z'),
  'lastUpdated': datetime.utcnow().strftime('%Y-%m-%dT%H:%M:%S.000Z')
}]
json.dump(d, open(p,'w'), indent=2)
print('installed_plugins.json updated')
"

mkdir -p ~/.cleanercat/.claude-plugin
cat > ~/.cleanercat/.mcp.json << 'EOF'
{
  "cleanercat": {
    "command": "/Users/$(whoami)/.cleanercat/bin/cleanercat-mcp",
    "args": []
  }
}
EOF
cat > ~/.cleanercat/.claude-plugin/plugin.json << 'EOF'
{
  "name": "cleanercat",
  "description": "Mac disk cleanup and maintenance skills powered by CleanerCat.",
  "version": "1.0.0"
}
EOF

After installation, tell the user:

"✅ CleanerCat MCP 已安装完成！请重启 Claude Code，重启后再次使用即可正常运行。"

Stop here and wait for user to restart.

---

If output is INSTALLED (or after restart), proceed to the relevant workflow below based on user intent:

---

Workflow A: Check Disk Space

Trigger: user asks about disk space, storage usage, how full the disk is

1. Call mcp__cleanercat__get_disk_usage with no arguments.
2. Present results in a table: Volume | Total | Used | Free | % Used
3. Classify status:
   • ✅ Healthy: < 80% used
   • ⚠️ Attention Needed: 80–90% used
   • 🔴 Critical: > 90% used
4. If Attention Needed or Critical, proactively suggest running a cleanup, finding large files, or deduplication.

---

Workflow B: Clean Junk Files

Trigger: user wants to clean Mac, remove junk, clear cache, free up space

Step 1: Scan

Call mcp__cleanercat__scan_system_junk with no arguments.

Step 2: Present Results

Group by category (System Junk / App Junk / Browser Junk) with sizes. Show Total cleanable: X.X GB at the end.

Step 3: Ask for Confirmation

"I found X.X GB of junk. Clean all, select categories, or cancel?"

Step 4: Clean

Call mcp__cleanercat__clean_junk with confirm="YES_CLEAN" and the appropriate action IDs.

Step 5: Report

Call mcp__cleanercat__get_disk_usage and report space freed + updated disk usage.

Safety: NEVER call clean_junk without explicit user confirmation. Even if user says "just do it", always confirm once — deletion is irreversible.

---

Workflow C: Find Large Files

Trigger: user wants to find large files, see what's taking up space, files over 50MB

Step 1: Scan

Call mcp__cleanercat__scan_large_files with no arguments.

Step 2: Present Results

Sort by file size descending, grouped by directory: File | Size | Last Modified.

Step 3: Highlight Quick Wins

• Files in Downloads older than 6 months
• Installer files (.dmg, .iso, .pkg, .zip)
• Files not accessed in over a year

Step 4: Let User Choose

Ask which files to remove. Do NOT assume — always ask.

Step 5: Delete

Call mcp__cleanercat__delete_files with confirm="YES_DELETE" and selected paths. Files go to Trash (recoverable).

Safety: NEVER delete files without explicit user selection and confirmation.

---

Workflow D: Find Duplicate Files

Trigger: user wants to find duplicates, deduplicate, remove identical files

Step 1: Scan

Call mcp__cleanercat__scan_duplicate_files with no arguments.

Step 2: Present Results

Group by duplicate sets, sorted by largest wasted space first. Suggest which copy to KEEP: organized folder > Downloads/Desktop; newer > older. Show Total reclaimable: X.X GB.

Step 3: Confirm

"I recommend removing N files to reclaim X.X GB. Move them to Trash?"

Step 4: Delete

Call mcp__cleanercat__delete_files with confirm="YES_DELETE" and selected paths. Remind user: files are in Trash and recoverable. Empty Trash to fully reclaim space.

Safety: NEVER delete the only copy in a group. NEVER call delete_files without explicit user confirmation.