cron

name	cron
description	Schedule reminders and recurring tasks.

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 my repository GitHub stars and report", every_seconds=600)

One-time scheduled task — always include a timezone offset or pass tz:

cron(action="add", message="Remind me about the meeting", at="2026-03-20T09:00:00+08:00")
# or: at="2026-03-20T09:00:00", tz="Asia/Shanghai"

Timezone-aware cron:

cron(action="add", message="Morning standup", cron_expr="0 9 * * 1-5", tz="Asia/Shanghai")
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 (China)	cron_expr: "0 8 * * *", tz: "Asia/Shanghai"
weekdays at 5pm (China)	cron_expr: "0 17 * * 1-5", tz: "Asia/Shanghai"
9am Vancouver time daily	cron_expr: "0 9 * * *", tz: "America/Vancouver"
at a specific time	at: ISO datetime with timezone offset (e.g. "2026-03-20T09:00:00+08:00")

Timezone

• cron_expr without tz: evaluated in UTC. Always pass tz when user's intent is in a non-UTC timezone.
• at without timezone offset: naive datetime is interpreted as UTC. Use +08:00 suffix or pass tz="Asia/Shanghai" for China Standard Time.
• tz accepts IANA timezone names: Asia/Shanghai, America/Vancouver, Europe/London, etc.