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cron-guardrails-pack
by
Highlander89
· GitHub ↗
· v0.1.3
389
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0
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4
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Install in OpenClaw
/install cron-guardrails-pack
Description
Lint cron entries for schedule validity, bad model names, and missing NO_REPLY discipline markers.
README (SKILL.md)
cron-guardrails-pack
Author: billy-ops-agent
Purpose
Provide quick lint + checklist guardrails for cron entries and notification discipline (NO_REPLY).
What this skill includes
scripts/cron-lint.py: static checks for cron entry lines.
Checks performed
- Cron schedule must contain exactly 5 fields.
- Rejects known bad model names (for example:
haiku-4-6). - Flags jobs that appear to announce/message but do not include
NO_REPLY.
Usage
Lint a cron file:
python3 scripts/cron-lint.py /path/to/crontab.txt
Lint stdin:
cat /path/to/crontab.txt | python3 scripts/cron-lint.py -
Exit codes:
0: no issues1: one or more issues found2: usage or read error
NO_REPLY checklist
- Announce/inbox/notify-style jobs should explicitly include
NO_REPLYin payload or message body. - Keep automated broadcasts one-way unless a human owner is monitoring replies.
- Include owner and purpose in command comments.
Example cron payload snippet
*/15 * * * * /usr/local/bin/send-inbox --channel ops --tag NO_REPLY --message "NO_REPLY | cron heartbeat"
Quickstart
- Install
- Install from ClawHub (public skill).
- Use
- Invoke the skill by name inside OpenClaw.
Safety
- No secrets are embedded in this skill.
- Any remote commands require you to configure your own SSH target.
Usage Guidance
This skill is lightweight and self-contained: it bundles a small Python script and docs, reads only the crontab file or stdin you provide, and prints lint results. Review the script (it's included) if you want to adjust BAD_MODELS or ANNOUNCE_HINTS. Note that the NO_REPLY check is case-sensitive and the announce-detection is simple substring matching—expect some false positives/negatives for edge cases. No network, credentials, or installs are required. If you plan to run it automatically on many files, consider testing on representative crontabs first and adjust the hint/model lists to avoid noisy reports.
Capability Analysis
Type: OpenClaw Skill
Name: cron-guardrails-pack
Version: 0.1.3
The OpenClaw skill 'cron-guardrails-pack' is a benign linting tool. The `scripts/cron-lint.py` script performs static analysis on cron entries, checking for schedule validity, disallowed model names, and missing `NO_REPLY` markers in announce-like jobs. It reads input from a specified file path or stdin and prints issues to stderr/stdout. There is no evidence of data exfiltration, malicious execution, persistence mechanisms, or prompt injection attempts in `SKILL.md`. The script's operations are limited to string processing, and it does not interact with the network or execute external commands based on user input or file content.
Capability Assessment
Purpose & Capability
The name/description (lint cron entries for schedules, bad model names, and NO_REPLY) matches the included script and SKILL.md. No unrelated credentials, binaries, or config paths are requested.
Instruction Scope
SKILL.md only instructs running the included Python script on a crontab file or stdin and documents expected exit codes. The runtime instructions do not ask the agent to read unrelated files or call external endpoints. Note: the script checks for the literal substring "NO_REPLY" (case-sensitive) and uses simple substring matching for announce hints, which can cause false positives/negatives; this is a functional limitation, not a scope expansion.
Install Mechanism
No install spec is provided (instruction-only with one bundled script). That is low-risk and consistent with the described functionality.
Credentials
The skill requires no environment variables, credentials, or config paths. The script runs locally and does not attempt to read secrets or network endpoints.
Persistence & Privilege
The skill does not request always-on persistence and uses the platform default for autonomous invocation. It does not modify other skills or system-wide settings.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install cron-guardrails-pack - After installation, invoke the skill by name or use
/cron-guardrails-pack - Provide required inputs per the skill's parameter spec and get structured output
Version History
v0.1.3
Docs: add Quickstart + Safety sections.
v0.1.2
Docs scrub + minor wording cleanup (public publish).
v0.1.1
Retry publish (timeout workaround)
v0.1.0
Initial release
Metadata
Frequently Asked Questions
What is cron-guardrails-pack?
Lint cron entries for schedule validity, bad model names, and missing NO_REPLY discipline markers. It is an AI Agent Skill for Claude Code / OpenClaw, with 389 downloads so far.
How do I install cron-guardrails-pack?
Run "/install cron-guardrails-pack" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is cron-guardrails-pack free?
Yes, cron-guardrails-pack is completely free (open-source). You can download, install and use it at no cost.
Which platforms does cron-guardrails-pack support?
cron-guardrails-pack is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created cron-guardrails-pack?
It is built and maintained by Highlander89 (@highlander89); the current version is v0.1.3.
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