For the hot tub owner

One hot tub on the board. Filter clean / rinse on the J-335 every 30 days, on a calendar line. Water chemistry / sanitizer check every Saturday, on its own weekday line. The annual spa flush / drain-and-refill at the year mark. That is the whole list, and it lives on one due board.

You know the last flush. The drain-and-refill was done at Lakeview Spa Care on October 12, 2025, and the invoice said $285. Say that date to Muse once and the row is written. The next flush comes due on October 12, 2026, and the Worker counts the leftover days on the calendar. Book Lakeview Spa Care for that week and the refill happens on the date.

Before the weekend, ask Muse what's due on the J-335. The chemistry check comes back with Saturday on its own line. The filter clean / rinse comes back with its calendar date. The flush comes back with October 12, 2026 and the days left. The Worker subtracts on the calendar and names what is left, and no model sits in the due path.

The calendar lines keep their dates. The filter clean / rinse is every 30 days: pull the cartridges, hose them off, seat them back dry. The soak you took a week late does not slide next month's date. The chemistry check is every Saturday: test strips, pH, sanitizer. The Saturday a skipped weekend eats does not push the check into the week. A late tick is logged when it happened; the cadence does not move.

Your spa tech preference is one ask too. Say it once: Always Lakeview Spa Care on the hot tub. Muse writes it, and the next flush booking starts at Lakeview Spa Care without you naming the shop again.

The board can call ChatGPT too. Subscribe once and ChatGPT hears when a logged tick or completion puts the filter clean or the annual flush on the board, in a signed webhook naming the job and how late. You did not have to ask first.

The day the hot tub sells, say it once: sold. Muse archives the hot tub and the due board drops it that day. Every flush row, chemistry line, and rinse date you logged stays in the history. If the deal falls through, one ask puts it back on the board.

The house log on /home-maintenance-checklist shows how calendar rows look. Copy the prompt on /for-your-agent and paste it into Muse. Free on Cloudflare Workers and D1.