Agent Config | Smallest AI Docs

Beyond the prompt itself, your agent has settings that shape how it behaves on a call: when it hangs up, when it transfers, how it sounds, and more. These live in two places in the editor: the Configuration Panel (right sidebar) and Agent Settings (left sidebar).

Configuration Panel

End Call

Tells your agent when to hang up.

Setup: Toggle End Call on, then add a function with a Name (an internal identifier) and a Description. The Description is what the AI uses to decide when to trigger it, so be specific.

Name	Description
`end_resolved`	End the call when the customer confirms their issue is completely resolved.
`end_goodbye`	End the call when the customer says goodbye or thanks.
`end_transferred`	End the AI portion of the call after a successful transfer.
`end_no_response`	End the call if the caller doesn’t respond after three attempts.

Transfer Call

Hands the conversation off to a human. Choose Cold Transfer for an immediate handoff, or Warm Transfer to have the AI brief the human first.

Setup: Toggle Transfer Call on, then add a transfer with a Name, Description, destination Transfer Number, and Type (Cold or Warm). Warm transfers add a few extra fields: on-hold music, a whisper message only the human hears, and a three-way message both parties hear once connected.

Knowledge Base

Lets your agent search your docs, FAQs, and policies during a call. Toggle Knowledge Base on and select one from the dropdown. See Knowledge Base to create one.

Variables

Insert dynamic values into your prompt using {{variable_name}}. Variables can be ones you define with a default value, system-provided (like {{caller_phone}} or {{call_duration}}), or pulled from an API response ({{api.field_name}}). Add a fallback with {{name|default}} in case a value is missing.

API Calls

Lets your agent fetch or send data mid-call, like looking up an order or booking a slot. Toggle API Calls on, then configure a Name, Description (tells the AI when to trigger it), URL, Method, headers, and parameters. Map fields from the response to variables you can use in your prompt with {{api.field_name}}.

Agent Settings

General Settings

Setting	What it does	Default
First Message	A fixed opening line. Skips generating it via the LLM each time, useful for high-volume campaigns	Empty (LLM generates it)
Chat Timeout	How long to wait for a reply in text chat before prompting again	60 sec
Webcall Timeout	Same, for browser voice calls	20 sec
Telephony Timeout	Same, for phone calls	20 sec

After three unanswered prompts, the agent ends the conversation.

Language Selection

Sets the language your agent speaks by default. The options depend on the voice you’ve picked. If you don’t see the language you need, try a different voice.

Voice Settings

Setting	What it does	Default
Speech Speed	How fast the agent talks	1x
Pronunciation Dictionary	Custom pronunciation for brand names or technical terms	—
Background Sound	Ambient audio behind the agent’s voice (Office, Call Center, Static, Cafe)	None
Mute Until First Response	Mutes the caller’s mic until the agent finishes its opening line	Off
Voicemail Detection	Detects when a call reaches voicemail instead of a person	Off
PII Redaction	Automatically redacts sensitive personal info from transcripts	Off
Denoising	Filters background noise for clearer speech detection	Off
Voice Detection Sensitivity	Thresholds for recognizing when the caller is speaking	Works well as-is
Smart Turn Detection	Uses conversation patterns, not just silence, to know when the caller is done talking	Off
Interruption Backoff	A short cooldown after the agent starts speaking, before it can be interrupted	Off

Start with the defaults. Only adjust these if you notice specific issues, like missed words or the agent responding too soon.

Model Settings

Setting	What it does	Default
LLM Model	The AI model powering responses (Electron, GPT-4o, etc.)	—
Language	Primary response language	—
Speech Formatting	Auto-formats transcripts for readability (punctuation, dates, numbers)	On
Language Switching	Lets the agent switch languages mid-call based on what the caller speaks	On

Phone Number

Assigns a phone number to your agent so calls to that number reach it. You can assign more than one number to the same agent. See Phone Numbers to purchase or configure numbers.

Webhooks

Pushes real-time call events (starts, ends, analytics ready) to your own systems, so you can update a CRM or trigger a workflow. Select an existing webhook from the dropdown. See Webhooks to create one.

Prompt

Structure, persona, tools, and best practices

Deploy to Phone

Get a real phone number and go live