# Send Cron Doctor to your agent
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
## Fast path
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
## Suggested prompts
### New install

```text
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Then review README.md for any prerequisites, environment setup, or post-install checks. Tell me what you changed and call out any manual steps you could not complete.
```
### Upgrade existing

```text
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Then review README.md for any prerequisites, environment setup, or post-install checks. Summarize what changed and any follow-up checks I should run.
```
## Machine-readable fields
```json
{
  "schemaVersion": "1.0",
  "item": {
    "slug": "cron-doctor",
    "name": "Cron Doctor",
    "source": "tencent",
    "type": "skill",
    "category": "开发工具",
    "sourceUrl": "https://clawhub.ai/suryast/cron-doctor",
    "canonicalUrl": "https://clawhub.ai/suryast/cron-doctor",
    "targetPlatform": "OpenClaw"
  },
  "install": {
    "downloadUrl": "/downloads/cron-doctor",
    "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=cron-doctor",
    "sourcePlatform": "tencent",
    "targetPlatform": "OpenClaw",
    "packageFormat": "ZIP package",
    "primaryDoc": "SKILL.md",
    "includedAssets": [
      "README.md",
      "SKILL.md"
    ],
    "downloadMode": "redirect",
    "sourceHealth": {
      "source": "tencent",
      "status": "healthy",
      "reason": "direct_download_ok",
      "recommendedAction": "download",
      "checkedAt": "2026-04-30T16:55:25.780Z",
      "expiresAt": "2026-05-07T16:55:25.780Z",
      "httpStatus": 200,
      "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=network",
      "contentType": "application/zip",
      "probeMethod": "head",
      "details": {
        "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=network",
        "contentDisposition": "attachment; filename=\"network-1.0.0.zip\"",
        "redirectLocation": null,
        "bodySnippet": null
      },
      "scope": "source",
      "summary": "Source download looks usable.",
      "detail": "Yavira can redirect you to the upstream package for this source.",
      "primaryActionLabel": "Download for OpenClaw",
      "primaryActionHref": "/downloads/cron-doctor"
    },
    "validation": {
      "installChecklist": [
        "Use the Yavira download entry.",
        "Review SKILL.md after the package is downloaded.",
        "Confirm the extracted package contains the expected setup assets."
      ],
      "postInstallChecks": [
        "Confirm the extracted package includes the expected docs or setup files.",
        "Validate the skill or prompts are available in your target agent workspace.",
        "Capture any manual follow-up steps the agent could not complete."
      ]
    }
  },
  "links": {
    "detailUrl": "https://openagent3.xyz/skills/cron-doctor",
    "downloadUrl": "https://openagent3.xyz/downloads/cron-doctor",
    "agentUrl": "https://openagent3.xyz/skills/cron-doctor/agent",
    "manifestUrl": "https://openagent3.xyz/skills/cron-doctor/agent.json",
    "briefUrl": "https://openagent3.xyz/skills/cron-doctor/agent.md"
  }
}
```
## Documentation

### Cron Doctor

Diagnose and triage cron job failures.

### Usage

When asked to check cron health or diagnose failures:

### 1. List All Jobs

# List user's crontab
crontab -l

# List system crontabs
sudo cat /etc/crontab
ls -la /etc/cron.d/

### 2. Check Recent Execution

# Check cron logs (location varies by system)
# Debian/Ubuntu:
grep CRON /var/log/syslog | tail -50

# RHEL/CentOS:
tail -50 /var/log/cron

# macOS:
log show --predicate 'process == "cron"' --last 1h

# Check for specific job output
grep "your_job_name" /var/log/syslog | tail -20

### 3. Identify Problems

Error patterns to watch:

"command not found" — Missing executable or PATH issue
"Permission denied" — File/directory permissions wrong
"No such file or directory" — Script path incorrect
"timeout" — Job took too long
"ECONNREFUSED" — Network/service down
"rate limit" — API throttling
Missing output — Job may not be running at all

### 4. Triage Priority

PriorityCriteria🔴 CriticalTrading, backup, security jobs🟠 HighUser-facing deliveries🟡 MediumMonitoring, research jobs🟢 LowNice-to-have, non-essential

### 5. Generate Report

Write to ~/workspace/reports/cron-health-YYYY-MM-DD.md:

# Cron Health Report - [DATE]

## Summary
- ✅ Healthy: X jobs
- ⚠️ Warning: X jobs  
- ❌ Failed: X jobs

## Failed Jobs

### [Job Name]
- **Error:** [message]
- **Last Success:** [date]
- **Priority:** [level]
- **Fix:** [suggested action]

## Recommendations
1. [Action item]
2. [Action item]

### 6. Common Fixes

ErrorFixCommand not foundUse full path to executable, or set PATH in crontabPermission deniedCheck file permissions, run chmod +x script.shNo outputAdd >> /tmp/job.log 2>&1 to capture outputWrong timezoneSet TZ= in crontab or use system timezoneRate limitReduce frequency or add backoff

### 7. Debugging Tips

# Test cron environment (cron has minimal PATH)
env -i /bin/sh -c 'echo $PATH'

# Verify script runs manually
/path/to/your/script.sh

# Check if cron daemon is running
systemctl status cron   # Linux
launchctl list | grep cron  # macOS

### Escalation

If 3+ critical jobs failed, alert the user immediately.

### Verification Gates

Before claiming diagnosis complete:

All failed jobs listed — none skipped or ignored
 Priority assigned — based on impact, not just recency
 Fix suggested — actionable next step for each failure
 Report written — to ~/workspace/reports/cron-health-YYYY-MM-DD.md
 Critical failures escalated — 3+ critical = alert user
## Trust
- Source: tencent
- Verification: Indexed source record
- Publisher: suryast
- Version: 1.0.1
## Source health
- Status: healthy
- Source download looks usable.
- Yavira can redirect you to the upstream package for this source.
- Health scope: source
- Reason: direct_download_ok
- Checked at: 2026-04-30T16:55:25.780Z
- Expires at: 2026-05-07T16:55:25.780Z
- Recommended action: Download for OpenClaw
## Links
- [Detail page](https://openagent3.xyz/skills/cron-doctor)
- [Send to Agent page](https://openagent3.xyz/skills/cron-doctor/agent)
- [JSON manifest](https://openagent3.xyz/skills/cron-doctor/agent.json)
- [Markdown brief](https://openagent3.xyz/skills/cron-doctor/agent.md)
- [Download page](https://openagent3.xyz/downloads/cron-doctor)