Voice AI agents API

Your AI keys.
Your phone line.
Our voice engine.

Build AI agents that answer calls, make calls and talk on your website. You connect your own AI accounts and phone line. We run the calls.

₹0.50

$0.005

a connected minute. No monthly fee.

About a tenth of the platform fee that Vapi ($0.05) and Retell ($0.055) list on their pricing pages (6 November 2026). See the sources

Create an account Read the quickstart

Whole minutes, rounded up · prepaid · payment fee on top-ups (3% rupees, 5% dollars)

Live call audioboth ways

Our fee: ₹0.50 or $0.005 a minute
Monthly fee: none
Your AI: bills you directly
Your phone line: bills you directly

Bring your own

You keep your accounts. We run the calls.

Your AI

Speech, AI model and voice come from your own accounts, at their prices. Keys are encrypted and never shown again after you save them.

AI models

Google
OpenAI
Anthropic
Sarvam
DeepSeek
Kimi
Z.AI

Speech and voice

Sarvam
Google
Azure
ElevenLabs
Deepgram
Cartesia

Your phone line

Your carrier account, your numbers, your carrier bill. We do not sell or rent numbers.

Indian carriers

Exotel
Vobiz
FreJun

Also

Plivo
Twilio
Telnyx
Vonage

Our side

We run the live call: listening, replying, letting the caller interrupt, metering, and webhooks. We never fall back to our own AI keys.

Call audio stays with your phone company. If you turn transcripts on, we keep them for 90 days, then delete them.

What you get

Everything a voice agent needs

Agents

Choose the speech, AI model and voice for each agent, or one realtime model. Change them any time.

Phone calls, in and out

Answer calls on your own numbers. Start calls from your server; an idempotency key stops a retry from dialling twice.

Call lists

Upload Excel, CSV or a Google Sheet. Set calling hours, retries and a do-not-call list, then download the results.

Call speed

Every call shows how fast the agent replied, and which part was slowest: your AI model or your voice provider.

Browser calls

Visitors talk to an agent from your website, no phone line needed. The browser key works only on the sites you list.

Webhooks

A signed message to your server when a call starts, ends, or its summary is ready. Failed deliveries are retried.

Hang-up switch

The agent can end the call when the talk is done. Turn it off for any agent that should never hang up first.

Docs for people and AI tools

An OpenAPI reference, llms.txt, and every docs page as Markdown.

From your server

Start a phone call with one request

Make a key in the console and keep it on your server. The console itself signs you in with your account, so a project key never sits in a browser.

Agents, phone lines, calls, call lists and webhooks work the same way in the console and through the API.

API reference Try a browser call

server-side request

# Keep the project key on your server, never in browser code.
curl -X POST https://api.developers.dvaarik.com/v2/voice/sessions/outbound \
  -H "X-Api-Key: $DVAARIK_API_KEY" \
  -H "Idempotency-Key: order-1042-reminder" \
  -H "Content-Type: application/json" \
  -d '{
    "agent_id": "00000000-0000-0000-0000-000000000000",
    "to": "+15550000002",
    "from": "+15550000001",
    "variables": {"customer_name": "Asha"}
  }'

# Send the same Idempotency-Key again and you get the first call back,
# not a second call.

Price