Slotnook: appointment scheduling and booking pages for consultants

Slotnook needed open slots computed from weekly hours and overrides, booking pages that update while a guest is looking, emailed calendar invites, and reminders on a schedule. Each of those is a part of Elements, so the agent spent its 21 minutes on the scheduling itself.

What Elements gave the app

• Booking pages that update live. A channel tells every open booking page when a host's calendar changes, so a time another guest just took drops out of the picker on the spot.
• Booking as a function call. The booking page calls @rpc functions to read open times, book, reschedule and cancel, with types checked from the page to the database. Booking locks the host inside a transaction, so each time goes to exactly one guest.
• Open times from SQL. A migration defines meeting types, weekly hours, date overrides and bookings, plus a SQL function that turns them into open start times with buffers. A second migration seeds two consultants in Los Angeles and Berlin with five meeting types and bookings from guests in their own time zones.
• Invites by email. Each confirmation, reschedule and cancellation is a background job that sends an email with a calendar file attached, so the guest's calendar follows every change.
• Reminders on a schedule. One cron line runs a job every five minutes that sends a reminder for each booking starting within a day.
• Sessions. Hosts sign in to manage their meeting types, hours and bookings, and every host action checks that the booking belongs to the signed-in user.

What the project server gave the agent

The project server runs alongside the agent and answers as soon as a file is saved: it type-checks the templates, TypeScript and SQL, applies migrations and reruns the tests, so every question came back right away and the agent kept building.

What shipped

The app type-checks with zero errors and all 46 tests pass. Every page works on desktop and phone, and a time one guest books drops out of every other open booking page.