Sympana App Function Tools (Vapi)

All functions

These are the 11 functions available when you create a Vapi connection in Sympana. Click a function in the Sympana dashboard to enable or disable it.

Function	What It Does
Book Appointment	Book a new appointment on the linked GHL calendar
Get Appointment	Retrieve details of a specific appointment by ID
List Appointments	Show all upcoming appointments for the caller
Reschedule Appointment	Move an existing appointment to a new date/time
Delete Appointment	Cancel an existing appointment
Get Slots	Check available time slots on the GHL calendar
Get Contact	Look up a contact in GHL by ID, phone, or email
Create Contact	Create a new contact in GHL
Update Contact Data	Update contact fields (email, name, phone, custom fields)
Get Opportunity	Retrieve sales pipeline/deal data for the contact
Timezone Resolver	Resolve timezone from phone area code or city/state

Vapi functions work the same way as Retell functions — the same 11 tools, same parameters, same behavior. The only difference is how Sympana registers them with each provider. You don’t need to worry about this — Sympana handles it automatically.

Function parameters

Book Appointment

Parameter	Type	Required	Auto-filled?	Description
`first_name`	string	Yes	Yes	Contact’s first name
`last_name`	string	Yes	Yes	Contact’s last name
`phone`	string	Yes	Yes	Phone number
`title`	string	Yes	No — agent asks	Purpose of the appointment
`email`	string	No	Yes	Contact’s email
`preferred_date`	string	No	No — agent asks	Any date format accepted
`preferred_time`	string	No	No — agent asks	”2:30 PM”, “14:30”, “2pm”
`timezone`	string	No	Yes	IANA timezone or “EST”, “Pacific”
`duration_minutes`	integer	No	Yes — default 30	Length in minutes

Get Slots (Check Availability)

Parameter	Type	Required	Description
`date`	string	No	Date to check (defaults to tomorrow)
`timezone`	string	No	Defaults to America/New_York

Returns: Available times, slot duration, nearest available slots. Auto-checks 7 days ahead.

Get Contact

No parameters needed — uses contact ID automatically. Can search by phone or email. Returns: Name, phone, email, timezone, tags, source, custom fields.

Update Contact Data

Parameter	Type	Required	Description
`field_name`	string	Yes	Which field to update
`field_value`	string	Yes	New value

Updatable fields: email, firstName, lastName, phone, companyName, address1, city, state, postalCode, country, website, timezone, plus custom fields.

Create Contact

Parameter	Type	Required
`first_name`	string	Yes
`last_name`	string	Yes
`phone`	string	Yes
`email`	string	No

Reschedule Appointment

Parameter	Type	Required
`appointment_id`	string	Yes
`new_date`	string	No
`new_start_time`	string	No

Delete Appointment

Parameter	Type	Required
`appointment_id`	string	Yes

List Appointments, Get Appointment, Get Opportunity

Use baseline contact variables automatically. Get Appointment requires appointment_id.

Timezone Resolver

Parameter	Type	Required
`phone`	string	No — auto from call
`city`	string	No
`state`	string	No

How to enable or disable functions

Click a function to toggle it on (blue checkmark) or off. Click Update Connection to save.

How to view function variables

Click on any enabled function to expand it. Click prebuilt variables included (show) to see auto-configured variables. For the full setup guide with prompt instructions, see How to Set Up Functions in Vapi. If you need help, join the Sympana Discord server.

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Sympana App Function Tools (Vapi)

All functions

Function parameters

Book Appointment

Get Slots (Check Availability)

Get Contact

Update Contact Data

Create Contact

Reschedule Appointment

Delete Appointment

List Appointments, Get Appointment, Get Opportunity

Timezone Resolver

How to enable or disable functions

How to view function variables

​All functions

​Function parameters

​Book Appointment

​Get Slots (Check Availability)

​Get Contact

​Update Contact Data

​Create Contact

​Reschedule Appointment

​Delete Appointment

​List Appointments, Get Appointment, Get Opportunity

​Timezone Resolver

​How to enable or disable functions

​How to view function variables

All functions

Function parameters

Book Appointment

Get Slots (Check Availability)

Get Contact

Update Contact Data

Create Contact

Reschedule Appointment

Delete Appointment

List Appointments, Get Appointment, Get Opportunity

Timezone Resolver

How to enable or disable functions

How to view function variables