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cron SKILL.md skillA

cron from phyagentos/phyagentos-core is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add phyagentos/phyagentos-core/cron@git:20260331.475dbda

Pins git:20260331.475dbda in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: phyagentos/phyagentos-core
Path: PhyAgentOS/skills/cron/SKILL.md
Versions recorded: 1
Latest version: git:20260331.475dbda, committed Mar 31, 2026
Size: 1,508 bytes
Repository stars: 2,996
License: MIT

Schedule reminders and recurring tasks.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file 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 HKUDS/PhyAgentOS 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" |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add phyagentos/phyagentos-core/cron@sha256:d0fb2533c47e70d3

The line at the top of this page pins the label git:20260331.475dbda, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_kdbuubgjdbhoyckm.svg)](https://markdownregistry.com/a/art_kdbuubgjdbhoyckm)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Mar 31, 2026.

version	committed	commit	size	audit
git:20260331.475dbda latest	2026-03-31	475dbda	1,508 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (1508 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

phyagentos/phyagentos-core · 2,996 stars · license MIT · pushed 2026-10-30 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_kdbuubgjdbhoyckm
GET https://markdownregistry.com/api/v1/resolve?ref=phyagentos/phyagentos-core/cron
GET https://markdownregistry.com/api/v1/blob/d0fb2533c47e70d330236223c947b727f3fae1c157af98e85dc8a4abb347aa1d

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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