cron-explainer

cron-explainer is a skill for Claude Code from Goldziher/ai-rulez. It costs 14 tokens per session (63 once invoked), scanned A, original, MIT.

A plain-English translator for cron expressions. Cron is a scheduler commonly used on Unix-like systems, and its five-field expressions describe when a command runs.

In plain words
What is it for?
Use it to understand expressions such as */15 * * * *, including how often a scheduled task runs.
Why use it?
Cron syntax is compact and easy to misread. This explains the schedule without changing or installing anything.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to understand expressions such as /15 *, including how often a scheduled task runs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/goldziher/ai-rulez/cron-explainer
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Goldziher/ai-rulez --skill cron-explainer
Clone the repo
git clone --depth 1 https://github.com/Goldziher/ai-rulez

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cron-explainer

README.md
[![agentmods](https://agentmods.dev/badge/skills/goldziher/ai-rulez/cron-explainer/github.svg)](https://agentmods.dev/skills/goldziher/ai-rulez/cron-explainer)
Your own site
<a href="https://agentmods.dev/skills/goldziher/ai-rulez/cron-explainer"><img src="https://agentmods.dev/badge/skills/goldziher/ai-rulez/cron-explainer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cron-explainer

Your own site · 80×15
<a href="https://agentmods.dev/skills/goldziher/ai-rulez/cron-explainer"><img src="https://agentmods.dev/badge/skills/goldziher/ai-rulez/cron-explainer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 14 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 63 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00014 $0.00063
Opus 5.5 $0.00006 $0.00025
Sonnet 5.5 $0.00003 $0.00013
Haiku 4.5 $0.00001 $0.00006

Measured today against content hash 43e95d9a0cb2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cron-explainer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

bench/judge/corpus/units/ben-s09-a/.claude/skills/cron-explainer/SKILL.md · 10 lines

What it actually says

Cron explainer

Translate an expression such as */15 * * * * into words ("every 15 minutes"). This skill only explains; it never installs or edits a crontab.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today First seen · 10 lines · 14 tokens per session scan A 43e95d9a0cb2

Subscribe to this mod's changes

cron-explainer is a skill published in the GitHub repository Goldziher/ai-rulez (163 stars, last pushed yesterday), licensed MIT. It adds 14 tokens to every session and 63 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-17.

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