Setup Health Cron

setup-health-cron

Schedules the daily-health-report skill to run automatically at a user-specified local time. Prefers launchd on macOS. Falls back to cron only when explicitly requested.

When to invoke

Trigger on phrases like: "setup daily health cron", "schedule mac health check", "automate daily report", "cron my mac check".

Inputs

• Time of day (local). Default 09:00. Accept HH:MM in 24-hour form.
• Mode: launchd (default) or cron.

Procedure (launchd — default)

1. Confirm with the user before writing anything: "Ready to install ~/Library/LaunchAgents/com.dennisonbertram.mac-guardian.daily.plist to run daily at HH:MM. Proceed?" Abort on "no".

2. Resolve plugin root: prefer ${CLAUDE_PLUGIN_ROOT}. Otherwise, derive it from the current skill path.

3. Build the plist at ~/Library/LaunchAgents/com.dennisonbertram.mac-guardian.daily.plist:

   <?xml version="1.0" encoding="UTF-8"?>
   <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
     "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
   <plist version="1.0">
   <dict>
     <key>Label</key><string>com.dennisonbertram.mac-guardian.daily</string>
     <key>ProgramArguments</key>
     <array>
       <string>/bin/bash</string>
       <string>-lc</string>
       <string>PLUGIN_ROOT="<ABSOLUTE PATH>"; bash "$PLUGIN_ROOT/scripts/render.sh" &amp;&amp; bash "$PLUGIN_ROOT/scripts/open-report.sh"</string>
     </array>
     <key>StartCalendarInterval</key>
     <dict>
       <key>Hour</key><integer>HH</integer>
       <key>Minute</key><integer>MM</integer>
     </dict>
     <key>StandardOutPath</key><string>/tmp/mac-guardian.daily.out.log</string>
     <key>StandardErrorPath</key><string>/tmp/mac-guardian.daily.err.log</string>
     <key>RunAtLoad</key><false/>
   </dict>
   </plist>
   

   Substitute <ABSOLUTE PATH>, HH, MM. Hour is 0–23. Minute is 0–59.

4. Load it:

   launchctl bootout gui/$UID ~/Library/LaunchAgents/com.dennisonbertram.mac-guardian.daily.plist 2>/dev/null || true
   launchctl bootstrap gui/$UID ~/Library/LaunchAgents/com.dennisonbertram.mac-guardian.daily.plist
   launchctl enable gui/$UID/com.dennisonbertram.mac-guardian.daily
   

5. Verify:

   launchctl print gui/$UID/com.dennisonbertram.mac-guardian.daily | head -30
   

6. Note: the launchd agent runs render.sh and open-report.sh only. It does not re-run the collection skills automatically — collection requires Claude Code. Tell the user explicitly:

   "The scheduled job renders and opens a dashboard from whatever JSON has accumulated in ~/.mac-guardian/data. To refresh data, run /mac-health manually."

7. Print the uninstall instructions:

   launchctl bootout gui/$UID ~/Library/LaunchAgents/com.dennisonbertram.mac-guardian.daily.plist
   rm ~/Library/LaunchAgents/com.dennisonbertram.mac-guardian.daily.plist
   

Procedure (cron — only when asked)

1. Confirm with the user before editing crontab.
2. Show the line that will be appended:

   MM HH * * * /bin/bash -lc 'bash "<PLUGIN_ROOT>/scripts/render.sh" && bash "<PLUGIN_ROOT>/scripts/open-report.sh"' >>/tmp/mac-guardian.cron.log 2>&1
   

3. Append via (crontab -l 2>/dev/null; echo "<line>") | crontab -.
4. Print uninstall instructions: crontab -e and remove the line, or crontab -l | grep -v mac-guardian | crontab -.

Output contract

Write a JSON envelope to ~/.mac-guardian/data/setup-health-cron-<ISOdate>.json:

{
  "skill": "setup-health-cron",
  "timestamp": "...",
  "severity": "ok",
  "summary": "Installed launchd agent for 09:00 daily",
  "findings": [],
  "raw": { "mode": "launchd", "time": "09:00", "plist_path": "/Users/.../com.dennisonbertram.mac-guardian.daily.plist" }
}

Handoff

• On direct invocation, also render a mini HTML via bash ${CLAUDE_PLUGIN_ROOT}/scripts/render-single.sh setup-health-cron.

Safety

• Must prompt for confirmation before writing a launchd plist or modifying crontab.
• Never use sudo — the agent is user-level (gui/$UID).
• If the plist already exists, prompt before overwriting.
• On any failure during bootstrap/enable, restore the previous plist (if any) and report the error.