health-check✓ Pass

SKILL.md Content

---
name: health-check
description: |
  System health check dispatched by the activity monitor via Control queue.
  Checks PM2 services, disk space, and memory usage.
  Use when receiving a control message containing "health-check".
user-invocable: false
allowed-tools: Bash, Read, Grep
---

# System Health Check

Periodic system health check delivered via the C4 Control queue.

## When to Use

- Receiving a control message with "health-check" in the content
- The activity monitor enqueues this automatically at regular intervals

## Steps

### 1. Check PM2 Services

```bash
pm2 jlist
```

Parse the JSON output. Every service should have `status: "online"`.
Record which services are stopped or errored.

### 2. Check Disk Space

```bash
df -h / /home 2>/dev/null || df -h /
```

Thresholds:
- OK: < 80% used
- Warning: 80-90% used
- Critical: > 90% used

### 3. Check Memory

```bash
free -m
```

Thresholds:
- OK: < 80% used
- Warning: 80-90% used
- Critical: > 90% used (or swap > 50% used)

### 4. Report Results

If all checks pass, log to `~/zylos/logs/health.log`:

```
[YYYY-MM-DD HH:MM:SS] Health Check: PM2 X/X online, Disk XX%, Memory XX% - ALL OK
```

If any issues found, notify whoever is most likely to help:
1. Check your memory files for a designated owner or ops person
2. If none designated, notify the person you normally work with most
3. Use `c4-send.js` with the appropriate channel and endpoint to send the alert

## Issue Resolution

| Issue | Action |
|-------|--------|
| PM2 service stopped | `pm2 restart <service>` and report |
| High disk usage | Check logs directories, report findings |
| High memory / swap | Report findings, check for runaway processes |

License

Declared license: MIT

MIT License

Copyright (c) 2026 zylos-ai

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

View the license in the source repository — the version published there is authoritative.