cron-doctor SKILL.md skillA
cron-doctor from suryast/free-ai-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add suryast/free-ai-agent-skills/cron-doctor@v1.1.0Pins v1.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- suryast/free-ai-agent-skills
- Path
cron-doctor/SKILL.md- Versions recorded
- 2
- Latest version
- v1.1.0, committed Oct 10, 2026
- First version recorded
- Feb 28, 2026
- Size
- 3,477 bytes
- Repository stars
- 2
- License
- MIT
Diagnose and triage cron job failures. Checks job states, identifies error patterns, prioritizes by criticality, generates health reports. Triggers on: cron failures, job health check, scheduled task errors, cron diagnosis, job not running, backup failed.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
> Uses the Agent Skills package format. Execution depends on the host tools and permissions; consult the frontmatter compatibility requirements where provided. # Cron Doctor Diagnose and triage cron job failures. ## Usage When asked to check cron health or diagnose failures: ### 1. List All Jobs ```bash # List user's crontab crontab -l # List system crontabs sudo cat /etc/crontab ls -la /etc/cron.d/ ``` ### 2. Check Recent Execution ```bash # 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 | Priority | Criteria | …
Read the whole file at its exact version.
How to install
mdr add suryast/free-ai-agent-skills/cron-doctor@sha256:914d7f9b97dc9b8cThe line at the top of this page pins the label v1.1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_452bsbxuggwufexu)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Feb 28, 2026 and Oct 10, 2026, about one every 224 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.1.0 latest | 2026-10-10 | ef59299 | 3,477 B | A | view · diff |
| v1.1.0 | 2026-02-28 | f9c909d | 3,242 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3477 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
suryast/free-ai-agent-skills · 2 stars · license MIT · pushed 2026-10-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_452bsbxuggwufexu GET https://markdownregistry.com/api/v1/resolve?ref=suryast/free-ai-agent-skills/cron-doctor GET https://markdownregistry.com/api/v1/blob/914d7f9b97dc9b8c6523f3cf75a47a995c9b019f76bf2f03418760096f41e7c9
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.