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.
npx skills add an8079/take-skills --skill cron-masterygit clone --depth 1 https://github.com/an8079/take-skillsWrote 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.
[](https://agentmods.dev/skills/an8079/take-skills/cron-mastery)<a href="https://agentmods.dev/skills/an8079/take-skills/cron-mastery"><img src="https://agentmods.dev/badge/skills/an8079/take-skills/cron-mastery/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.
<a href="https://agentmods.dev/skills/an8079/take-skills/cron-mastery"><img src="https://agentmods.dev/badge/skills/an8079/take-skills/cron-mastery.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00023 | $0.00759 |
| Opus 5 | $0.00012 | $0.00380 |
| Sonnet 5 | $0.00005 | $0.00152 |
| Haiku 4.5 | $0.00002 | $0.00076 |
Grade A, and why
cron-mastery 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 10d ago.
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.
What it actually says
cron-mastery — Cron调度大师
遇到cron表达式写不对？不知道哪个时间点触发？用这个skill直接给你生成+验证。
触发条件
- 用户提到cron、crontab、定时任务、调度
- 需要生成或解析cron表达式
- 不确定cron格式是否正确
工具列表
无特殊工具，主要靠分析 + 文档生成
技能参数
| 参数 | 类型 | 必填 | 说明 |
|---|---|---|---|
| minutes | string | 否 | 分钟，默认* |
| hours | string | 否 | 小时，默认* |
| dayOfMonth | string | 否 | 日期，默认* |
| month | string | 否 | 月份，默认* |
| dayOfWeek | string | 否 | 星期，默认* |
Cron格式说明
┌───────────── 分钟 (0-59)
│ ┌───────────── 小时 (0-23)
│ │ ┌───────────── 日期 (1-31)
│ │ │ ┌───────────── 月份 (1-12)
│ │ │ │ ┌───────────── 星期 (0-6，0=周日)
│ │ │ │ │
* * * * *
常用模式库
每分钟
* * * * *
每小时（第30分钟）
30 * * * *
每天凌晨3点
0 3 * * *
每4小时
0 */4 * * *
每周一凌晨6点
0 6 * * 1
每月1日凌晨0点
0 0 1 * *
工作日每天9点
0 9 * * 1-5
每30分钟（OpenClaw cron格式）
*/30 * * * *
验证规则
- 数值范围必须在有效区间内
- 星期用0-6，不要用7
- 月份用1-12，不要混淆
- */n 表示每n个单位触发一次
示例对话
用户: 帮我生成一个每周一三五下午3点执行的cron AI:
0 15 * * 1,3,5
用户: 这个cron是什么意思：0 */6 * * * AI: 每6小时整点执行一次（0:00, 6:00, 12:00, 18:00）
OpenClaw Cron特殊格式
OpenClaw支持自然语言调度，示例：
every 5 minutes→ 每5分钟every 4h→ 每4小时every day at 9am→ 每天9点every Monday at 6→ 每周一6点
转换为标准cron：
*/5 * * * *
0 */4 * * *
0 9 * * *
0 6 * * 1
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.
- 10d ago First seen · 119 lines · 23 tokens per session scan A b172ea1224f6
cron-mastery is a skill published in the GitHub repository an8079/take-skills (4 stars, last pushed 5mo ago), licensed MIT. It adds 23 tokens to every session and 759 once invoked, about $0.0001 per session on Opus 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 2026-08-31.
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