Voice Agent

Voice Agents

Australia/Sydney v—

Import agent JSON

Choose a file or paste JSON below.

Invalid JSON.

Versions

Write how the agent should behave. Save, then open Preview to test.

System prompt Workflow

Turn on exactly one mode before starting the agent.

First message Shared by both modes · leave empty for auto greeting

System prompt Personality, tone, rules, and goals

Date and time rules are added automatically.

Drag the black + below a node and release to add a subagent

Edit node

Label

Subagent prompt Instructions for this step

Configure webhook tools used to send conversation data.

Use knowledge base

Documents are saved to this agent as soon as you add them.

Add URL The page text is fetched once and stored.

Test retrieval See which passages the agent would use for a question

Settings apply the next time you press Start.

Preview

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Stopped

Press Start, then speak after the greeting.

Collection: —

Transcript appears here once you start talking.

Audio plays in this browser over WebRTC. On a VPS open the UI via HTTPS. Headphones prevent echo.

Transition

Forward

Transition type

Label

LLM condition Route when this is true

Condition cannot be empty

Tools

Tool name

Description

Webhook URL

Method

Headers (JSON object)

Extra body (JSON object, optional)

Data variables

Enabled

Posted only after the caller confirms. Variable descriptions tell the extractor what to store.

Phone Numbers

Configure SIP_PUBLIC_HOST in .env for live Crazytel routing.

Import SIP Trunk

Bring your Crazytel / carrier SIP number into this studio and assign an agent.

Label

0/50

Phone number

Assigned agent

Forward inbound calls from Crazytel to the SIP URI shown after import. Crazytel recommends AI Bridge for AI agents; paste our SIP URI as the destination.

Inbound Configuration

How this studio accepts SIP INVITEs for this number

Media Encryption

Allowed Numbers Restrict this phone number to be called only from specific phone numbers. While this is off, all numbers are allowed.

Allowed numbers

Allowed Source IP Addresses Restrict which IP addresses or CIDR ranges can send calls to this trunk. Works only for TCP/TLS transport, not UDP.

Source IPs / CIDRs

Remote Domains FQDN domains of your SIP servers for TLS certificate validation. Leave off if you don't use TLS.

Remote domains

Authentication Provide digest authentication credentials used to authenticate inbound calls.

Username

Password

Outbound Configuration

Configure where this studio should send outbound calls for your phone number

Address

Hostname or IP the SIP INVITE is sent to. Do not include the sip: prefix.

Transport Type

Media Encryption

Enabled Codecs

Codecs to offer in the SDP for outbound calls.

G.722 PCMU PCMA

Custom Headers Add custom SIP headers to be included with outbound calls.

Headers (JSON object)

Authentication Provide digest authentication credentials if required by your SIP trunk provider.

Username

Password

Crazytel routing

Paste this SIP URI into Crazytel Voice routing / AI Bridge destination.