# Cron

> Schedule reminders and recurring tasks.

- **Type:** Skill
- **Install:** `agentstack add skill-oevortex-vtx-coding-agent-cron`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [OEvortex](https://agentstack.voostack.com/s/oevortex)
- **Installs:** 0
- **Category:** [AI & ML](https://agentstack.voostack.com/c/ai-and-ml)
- **Latest version:** 0.1.0
- **License:** Apache-2.0
- **Upstream author:** [OEvortex](https://github.com/OEvortex)
- **Source:** https://github.com/OEvortex/vtx-coding-agent/tree/main/src/vtx_claw/skills/cron

## Install

```sh
agentstack add skill-oevortex-vtx-coding-agent-cron
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Cron

Use the `cron` tool to schedule reminders or recurring tasks that should report back to the originating chat/session when they run.

Do not use `cron` for periodic background checks that should stay quiet when there is nothing useful to report. For those, update `HEARTBEAT.md`; the protected heartbeat job runs those checks and only delivers results that pass the notification gate.

## 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/vtx-claw 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="")
```

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.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [OEvortex](https://github.com/OEvortex)
- **Source:** [OEvortex/vtx-coding-agent](https://github.com/OEvortex/vtx-coding-agent)
- **License:** Apache-2.0

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-oevortex-vtx-coding-agent-cron
- Seller: https://agentstack.voostack.com/s/oevortex
- Browse the marketplace: https://agentstack.voostack.com/browse

---
Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.