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 omnigentx/jarvis --skill cron-managementgit clone --depth 1 https://github.com/omnigentx/jarvisWrote 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/omnigentx/jarvis/cron-management)<a href="https://agentmods.dev/skills/omnigentx/jarvis/cron-management"><img src="https://agentmods.dev/badge/skills/omnigentx/jarvis/cron-management/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/omnigentx/jarvis/cron-management"><img src="https://agentmods.dev/badge/skills/omnigentx/jarvis/cron-management.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00054 | $0.00918 |
| Opus 5.5 | $0.00022 | $0.00367 |
| Sonnet 5.5 | $0.00011 | $0.00184 |
| Haiku 4.5 | $0.00005 | $0.00092 |
Grade A, and why
cron-management 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cron Management Skill
You have 4 ready-to-call tools: cron_create, cron_list, cron_update, cron_delete. No discovery needed.
Cron expression rules (REQUIRED)
A cron expression has 5 fields: minute hour day_of_month month day_of_week.
Common examples
0 9 * * *→ every day at 9:000 9 * * 1-5→ 9:00 Monday through Friday*/30 * * * *→ every 30 minutes0 */4 * * *→ every 4 hours0 7 27 4 *→ April 27 at 7:00 every year0 15 31 3 *+ one_shot=true → once on March 31 at 15:00
Calendar type (REQUIRED)
- Solar (Gregorian) — DEFAULT for normal date/month references.
- Lunar — use ONLY when the user explicitly references lunar concepts (1st-of-month, full-moon, Lunar New Year, lunar death anniversary, etc.).
0 7 15 * *+ calendar_type="lunar" → 15th of every lunar month0 6 1 * *+ calendar_type="lunar" → 1st of every lunar month0 7 10 3 *+ calendar_type="lunar" → 10/3 lunar
Exec mode (REQUIRED)
| User intent | Exec mode | Meaning |
|---|---|---|
| Plain reminder ("remind me") | reminder |
Send a notification text to the user |
| Action ("summarise / analyse / check / crawl / find") | agent_turn |
An agent executes a task automatically |
exec_mode = "reminder"→exec_payloadis the reminder text. Noexec_agentneeded.exec_mode = "agent_turn"→exec_payloadis the direct execution prompt,exec_agentis the agent name (REQUIRED). Valid agents:jarvis— synthesis, analysis, complex queriesResearchAgent— web search, newsFinanceAgent— stock / gold / crypto prices
⚠️ Writing exec_payload for agent_turn (IMPORTANT)
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.
- 1mo ago First seen · 79 lines · 54 tokens per session scan A 0e9e47582c4d
cron-management is a skill published in the GitHub repository omnigentx/jarvis (39 stars, last pushed 11d ago), licensed MIT. It adds 54 tokens to every session and 918 once invoked, about $0.0002 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 2026-08-30.
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