Agents

An agent is one configured persona — a voice, a model, instructions, and a set of behaviors — that can answer calls on any channel you connect to it (phone, website widget, or a browser test call).

The fastest way to start is Agents → New Agent → Build with AI: describe your business and it drafts the whole agent for you. See Build with AI.

Changes you make to an agent (instructions, voice, knowledge base, pause) apply from the very next call. Click Save changes at the bottom of the page — there’s no redeploy step.

Agent ID

Every agent has a 10-digit Agent ID, shown as a chip next to its name at the top of the agent page. Click it to copy. Use it to match calls to the right agent in other tools: every lead sent to ArthaLeads and to your webhooks carries it as agent_id.

The five tabs

The agent page is split into five tabs.

Instructions
Voice & language
Knowledge & tools
Conversation
After the call

Field	What it controls
Name and Description	How the agent appears in your dashboard.
Model	The AI that holds the conversation. Vistrow Bharat is built for Hindi, English and other Indian languages, and is the model to pick for every agent.
Who speaks first	AI speaks first (greets the caller) or Caller speaks first (the agent waits).
Welcome message — inbound	The opening line on inbound calls. Leave blank to have one generated.
Welcome message — outbound	The opening line on outbound calls. Leave blank to reuse the inbound one.
System prompt	The agent’s persona and instructions. Leave blank to use the built-in generic business assistant prompt.
Variables	Your own `{{variable}}` names, each with a fallback value, to personalise welcome messages and instructions.

Older agents set up on Vistrow Swift keep working, but Vistrow Swift is no longer offered for new choices — switch to Vistrow Bharat when you next edit the agent.

Field	What it controls
Voice	The voice callers hear. Only voices you’ve added on the Voices page appear here.
Default language	The language the agent opens in. It follows the caller if they switch.
Voice delivery	Pacing and expressiveness.
Background sound	Optional ambience behind the agent, with a volume control.

Caller noise suppression — filters background noise out of the caller’s audio. If callers say they spoke but the transcript is empty, set it to Off.
Interruption sensitivity — how quickly the agent stops talking when the caller starts. Higher yields faster; lower lets it finish through brief background noise.
Silence check-in after (sec) — how long a caller can go quiet before the agent checks in.
Max check-ins — how many times the agent checks in before giving up.
End call after silence (sec) — hangs up after this much continuous silence. 0 means never.
Max call duration (sec) — the longest a call can run. Shortly before the limit (up to about 25 seconds early), the agent says a short, polite goodbye in the caller’s language, then the call ends. Even with no limit set, calls end after 45 minutes.

Post-call data extraction — structured fields (name, budget, appointment time, anything you need) pulled from each transcript automatically and shown on the call’s record.
Webhook — send each call’s result (transcript, extracted fields, sentiment, agent_id) as JSON to your own endpoint.
CRM routing — choose which connected integrations this agent sends leads to. With none selected, it sends to every connected integration.

Test your agent

On the Agents page, each agent card has a mic button (Browser test) to talk to it in your browser and a phone button (Call test) to place a real call to your phone. For repeatable checks, use the Testing Lab.

Welcome

Getting Started

Build

Deploy

Monitor

Workspace

Agent ID

The five tabs

Test your agent

​Agent ID

​The five tabs

​Test your agent

Agent ID

The five tabs

Test your agent