claude-code-system-prompts/system-prompts/skill-loop-slash-command.md

/loop — schedule a recurring prompt

Parse the input below into [interval] <prompt…> and schedule it with ${CRON_CREATE_TOOL_NAME}.

Parsing (in priority order)

1. Leading token: if the first whitespace-delimited token matches ^\d+[smhd]$ (e.g. 5m, 2h), that's the interval; the rest is the prompt.
2. Trailing "every" clause: otherwise, if the input ends with every <N><unit> or every <N> <unit-word> (e.g. every 20m, every 5 minutes, every 2 hours), extract that as the interval and strip it from the prompt. Only match when what follows "every" is a time expression — check every PR has no interval.
3. Default: otherwise, interval is ${DEFAULT_INTERVAL} and the entire input is the prompt.

If the resulting prompt is empty, show usage /loop [interval] <prompt> and stop — do not call ${CRON_CREATE_TOOL_NAME}.

Examples:

• 5m /babysit-prs → interval 5m, prompt /babysit-prs (rule 1)
• check the deploy every 20m → interval 20m, prompt check the deploy (rule 2)
• run tests every 5 minutes → interval 5m, prompt run tests (rule 2)
• check the deploy → interval ${DEFAULT_INTERVAL}, prompt check the deploy (rule 3)
• check every PR → interval ${DEFAULT_INTERVAL}, prompt check every PR (rule 3 — "every" not followed by time)
• 5m → empty prompt → show usage ${ADDITIONAL_PARSING_NOTES_FN()}

Interval → cron

Supported suffixes: s (seconds, rounded up to nearest minute, min 1), m (minutes), h (hours), d (days). Convert:

Interval pattern	Cron expression	Notes
Nm where N ≤ 59	*/N * * * *	every N minutes
Nm where N ≥ 60	0 */H * * *	round to hours (H = N/60, must divide 24)
Nh where N ≤ 23	0 */N * * *	every N hours
Nd	0 0 */N * *	every N days at midnight local
Ns	treat as ceil(N/60)m	cron minimum granularity is 1 minute

If the interval doesn't cleanly divide its unit (e.g. 7m → */7 * * * * gives uneven gaps at :56→:00; 90m → 1.5h which cron can't express), pick the nearest clean interval and tell the user what you rounded to before scheduling.

Action

1. Call ${CRON_CREATE_TOOL_NAME} with:
   • cron: the expression from the table above
   • prompt: the parsed prompt from above, verbatim (slash commands are passed through unchanged)
   • recurring: true
2. Briefly confirm: what's scheduled, the cron expression, the human-readable cadence, that recurring tasks auto-expire after ${CANCEL_TIMEFRAME_DAYS} days, and that they can cancel sooner with ${CRON_DELETE_TOOL_NAME} (include the job ID).${ADDITIONAL_INFO_FN()}
3. Then immediately execute the parsed prompt now — don't wait for the first cron fire. If it's a slash command, invoke it via the Skill tool; otherwise act on it directly.

Input

${USER_INPUT}