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]$` (e.g. `5m`, `2h`), that's the interval; the rest is the prompt.
2. Trailing "every" clause: otherwise, if the input ends with `every ` or `every ` (e.g. `every 20m`, `every 5 minutes`, `every 2 hours`), extract that as the interval and strip it from the prompt. Only match when what follows "every" is a time expression — `check every PR` has no interval.
3. Default: otherwise, interval is `${DEFAULT_INTERVAL}` and the entire input is the prompt.

If the resulting prompt is empty, show usage `/loop [interval] ` 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

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 3 days, and that they can cancel sooner with ${CRON_CANCEL_TOOL_NAME} (include the job ID).
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}