Find free slots and check bookings in Acuity from ChatGPT

23 August 2026 · Acuity Scheduling MCP server

You can ask ChatGPT or Claude what is booked in Acuity Scheduling and when you are still free. The AI reads the appointments on each calendar, finds open slots for a service, and can move a booking to a new time. To start, add https://acuity-scheduling.usefulapi.io/mcp to your AI client as a connector.

Which prompt do I start with?

What appointments do I have tomorrow, grouped by calendar? Then find the next three free 60-minute consultation slots next week.

What does the AI do, step by step?

1. It reads the calendars and the services with acuity_list_calendars and acuity_list_appointment_types.
2. It lists the bookings for a date range with acuity_list_appointments, and reads one booking in full with acuity_get_appointment.
3. It finds the days with free time for a service with acuity_availability_dates, then the free times on a day with acuity_availability_times.
4. When you ask, it moves a booking with acuity_reschedule_appointment, or books a new one with acuity_create_appointment.

Does the client get an email when the AI changes a booking?

• By default, Acuity can send a confirmation, an update or a cancellation email, as when you make the change in Acuity.
• The tools that create, reschedule or cancel a booking can turn these emails off. Tell the AI if the client must not get an email.
• Most AI clients ask you to approve each call that changes data. This depends on the client's settings.

What do I need?

Your Acuity User ID and API Key. You find both in Acuity under Integrations → API. See the setup steps for Claude, ChatGPT, Cursor and other clients.