Skip to main content

​
Overview

System Functions are pre-built capabilities available to all AI agents. Unlike Custom Functions which call external webhooks, System Functions are built into the platform and handle common tasks like ending calls, transferring to humans, and sending messages.
Agent functions tab
Functions tab scroll

​
Available Functions

​
End Call

Allows the agent to hang up when the conversation is complete.
SettingDescription
Enable/DisableToggle whether the agent can end calls
ConditionCustomize when the agent should end the call
Default Condition: 
End the phone call. Use this when the conversation is complete,
the caller says goodbye, or there is nothing more to discuss.
Custom Condition Examples:
  • “End the call after confirming the appointment and saying goodbye”
  • “End the call only after the caller explicitly says goodbye or asks to hang up”
  • “End the call after completing the order and providing the confirmation number”
When End Call is disabled, calls will only end when the caller hangs up.

​
Transfer

Transfer the call to another phone number when needed.
SettingDescription
Enable/DisableToggle whether the agent can transfer calls
Transfer NumbersConfigure destination numbers with labels
Configuration:
  1. Go to Agents → Select agent → Functions tab
  2. Enable Transfer toggle
  3. Click Configure to add transfer destinations
Each transfer destination has:
  • Label: Name the agent uses (e.g., “Sales”, “Support”, “Mobile”)
  • Phone Number: Destination in E.164 format (+1234567890)
Example Usage: 
Caller: "Can I speak to a real person?"
Agent: "Of course, let me transfer you to our support team."
[Agent transfers call to configured support number]

​
SMS

Send text messages during or after calls.
SettingDescription
Enable/DisableToggle whether the agent can send SMS
Capabilities:
  • Send follow-up information after calls
  • Text links, confirmations, or details
  • Respond to caller requests for written info
Example Usage: 
Caller: "Can you text me the address?"
Agent: "Absolutely, I'll send that to you right now."
[Agent sends SMS with address details]

​
Extract Data

Collect structured information from conversations.
SettingDescription
Enable/DisableToggle data extraction
VariablesDefine what data to collect
Variable Types:
  • Text: Names, addresses, notes
  • Number: Phone numbers, quantities, amounts
  • Boolean: Yes/no confirmations
  • Enum: Selection from predefined options
Configuration:
  1. Go to Agents → Select agent → Functions tab
  2. Enable Extract Data toggle
  3. Click Configure to define variables
Each variable has:
  • Name: Variable identifier (snake_case)
  • Type: Data type to collect
  • Description: Helps AI understand what to collect
Example Variables:
NameTypeDescription
caller_nameTextThe caller’s full name
emailTextEmail address for follow-up
party_sizeNumberNumber of guests for reservation
needs_callbackBooleanWhether caller wants a callback

​
Booking

Schedule appointments via calendar integration.
SettingDescription
Enable/DisableToggle appointment booking
CalendarConnected calendar service
Supported Integrations:
  • Google Calendar
  • Cal.com
  • Calendly (coming soon)
Configuration:
  1. Connect your calendar in Apps → Integrations
  2. Go to Agents → Select agent → Functions tab
  3. Enable Booking toggle
  4. Click Configure to set availability
Example Usage: 
Caller: "I'd like to schedule an appointment for next week"
Agent: "I can help with that. I have openings on Tuesday at 2pm
       or Wednesday at 10am. Which works better for you?"

​
Configuring System Functions

All system functions are configured in the Functions tab of your agent settings:
  1. Navigate to Agents in the sidebar
  2. Select the agent you want to configure
  3. Click the Functions tab
  4. Toggle functions on/off
  5. Click Configure to customize each function
Changes save automatically.

​
Best Practices

Clear Conditions

Write specific end call conditions so your agent knows exactly when to hang up

Label Transfer Numbers

Use descriptive labels like “Sales Team” instead of just “Office”

Extract What Matters

Only extract data you’ll actually use - too many variables can confuse the AI

Test Thoroughly

Make test calls to verify each function works as expected