Book Calendar

Let your agent book appointments directly through Cal.com during a call.

Overview

The Book Calendar tool connects your agent to Cal.com so it can confirm and book appointments in real time after the caller selects a time slot.

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Setup

1. Create a Cal.com account

   Sign up at cal.com if you don’t have one.

2. Configure an event type

   In your Cal.com dashboard, set up the event type you want bookings created under.

3. Collect your credentials

   Credential	Where to find it
   Event Type ID	The numeric ID in your event type’s URL
   API Key	Settings → Developer → API Keys

4. Add the function in UponAI

   In your agent’s Functions section, click + Add and select Book Calendar Appointment.

   

   Enter:

   • Tool name
   • Cal.com API Key
   • Event Type ID
   • Tool description
   • Timezone (optional)
5. Update your prompt

   Tell the agent when to book:

   When the user selects a slot, book the appointment by calling the book_appointment function.
   

Pair this with the Check Calendar Availability tool so your agent first checks open slots before confirming a booking.