cron

A scheduling tool for sending reminders or running tasks once or repeatedly at specified times.

In plain words
What is it for?
Use it for one-time reminders, recurring reminders, scheduled agent tasks, and calendar-like schedules with a chosen time zone.
Why use it?
It removes the need to remember recurring actions or start them manually on a schedule.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/memtensor/memmy-agent/cron
Any agent
npx skills add MemTensor/memmy-agent --skill cron
Clone the repo
git clone --depth 1 https://github.com/MemTensor/memmy-agent

Made for: Claude Code, Codex.

Per session 8 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 406 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00008 $0.00406
Opus 5 $0.00004 $0.00203
Sonnet 5 $0.00002 $0.00081
Haiku 4.5 $0.00001 $0.00041

Measured 2d ago against content hash 6679859d0a7f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cron 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 2d 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.

Origin

This is a copy

100% identical to cron — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

App/memmy-agent/src/skills/cron/SKILL.md · 58 lines

What it actually says

Cron

Use the cron tool to schedule reminders or recurring tasks.

Three Modes

  1. Reminder - message is sent directly to user
  2. Task - message is a task description, agent executes and sends result
  3. One-time - runs once at a specific time, then auto-deletes

Examples

Fixed reminder:

cron(action="add", message="Time to take a break!", every_seconds=1200)

Dynamic task (agent executes each time):

cron(action="add", message="Check MemTensor/memmy-agent GitHub stars and report", every_seconds=600)

One-time scheduled task (compute ISO datetime from current time):

cron(action="add", message="Remind me about the meeting", at="<ISO datetime>")

Timezone-aware cron:

cron(action="add", message="Morning standup", cron_expr="0 9 * * 1-5", tz="America/Vancouver")

List/remove:

cron(action="list")
cron(action="remove", job_id="abc123")

Time Expressions

User says Parameters
every 20 minutes every_seconds: 1200
every hour every_seconds: 3600
every day at 8am cron_expr: "0 8 * * *"
weekdays at 5pm cron_expr: "0 17 * * 1-5"
9am Vancouver time daily cron_expr: "0 9 * * *", tz: "America/Vancouver"
at a specific time at: ISO datetime string (compute from current time)

Timezone

Use tz with cron_expr to schedule in a specific IANA timezone. Without tz, the server's local timezone is used.

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. 2d ago First seen · 58 lines · 8 tokens per session scan A 6679859d0a7f

Subscribe to this mod's changes

cron is a skill published in the GitHub repository MemTensor/memmy-agent (1,190 stars, last pushed 5d ago), licensed MIT. It adds 8 tokens to every session and 406 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to cron, differing in 2 lines, and is treated as a copy.

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