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Variables let you insert dynamic values into prompts, conditions, and API calls. Use them to personalize conversations, pass data between systems, and create dynamic flows.

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Syntax

{{variable_name}}
Variables are replaced with actual values at runtime.

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Variable Types

TypeSourceExample
SystemPlatform-provided{{caller_phone}}, {{call_duration}}
User DefinedYou create{{company_name}}, {{promo_code}}
APIFrom API responses{{customer_name}}, {{account_tier}}

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System Variables

VariableDescription
{{caller_phone}}Caller’s phone number
{{call_time}}When call started
{{call_duration}}Elapsed seconds
{{call_direction}}”inbound” or “outbound”
{{agent_id}}This agent’s ID
{{call_id}}Unique call identifier

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Default Values

Handle missing variables with fallbacks: 
Hello {{customer_name|there}}!
If customer_name is empty → “Hello there!”

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Implementation

Variables work in both agent types with slight differences in how they’re configured.

Single Prompt

Variables in Configuration Panel

Conversational Flow

Variables in Workflow Tab