cron

name cron description Schedule reminders and recurring tasks. 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 Reminder - message is sent directly to user Task - message is a task description, agent executes and sends result 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/nanobot 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.