Communication infrastructure

Every customer conversation, handled.

AI agents that call, message, and respond across voice, WhatsApp, SMS, and email. Works in Lagos, Lima, and Ohio.

Start now →Talk to us
40+ countries30+ languagesVoice + WhatsApp + SMS + EmailElevenLabs + OpenAI + Google

Every channel

One agent. Every way to reach your customers.

Connect voice, WhatsApp, SMS, and email. Your agent handles conversations across all of them — same context, same personality, no silos.

Voice

Local phone numbers in 40+ countries. SIP direct to carriers. Your agent sounds local because it is local.

WhatsApp

Business API, verified sender, rich messages. Two-way conversations, not just blasts.

SMS

Global SMS delivery. Local routes, not grey routes. Delivery receipts on every message.

Email

Transactional and outbound. Sequences, templates, tracking. Connected to the same agent.

Integrations

Works with the world's best.

Pre-integrated with leading voice AI, language models, telephony providers, and messaging platforms. As better models emerge, we add them.

ElevenLabs

Voice AI

OpenAI

Models + STT

Google

AI + STT

Deepgram

Speech-to-Text

Twilio

Telephony

WhatsApp

Messaging

Vonage

Telephony

Anthropic

AI Models

Try it now

Hear a live agent. Right now.

Enter your number and an AirDial agent calls you in seconds. This is a real call — not a recording.

TRY IT NOW

Enter your number. Shylock calls you in 10 seconds.

Or sign up at app.shylock.ai

Live call · In progress

Agent · Jane

Hi Amara, this is Jane calling from Kopa. I'm reaching out about your account. Is now a good time?

Customer

Yes, I've been expecting your call.

Agent · Jane

I can see a balance of $240 due. If we split that into two payments — one today and one in two weeks — would that work for you?

Customer

Yes, that works. Let's do it.

Outcome: payment plan agreed✓ Logged

How it works

Three steps. Zero infrastructure work.

1

Describe your agent

Name, personality, language, channels. Your agent, your script, your rules.

2

We handle the rest

Local phone number, voice model, WhatsApp channel, call scripts — provisioned and configured. Not in weeks. In seconds.

3

Launch a campaign

Upload a CSV or connect your CRM. Pick a strategy. Your agent starts reaching customers immediately. Every outcome logged.

Developers

Sauti API

Programmatic access to calls, messages, agents, and campaigns. RESTful endpoints, webhook events, full documentation.

Calls

Initiate, transfer, record. Real-time transcription via WebSocket.

Messages

WhatsApp, SMS, email. Send, receive, track delivery.

Assistants

Create, configure, version. Personality, voice, language, model.

Webhooks

Call completed, message delivered, payment promised. Real-time events to your backend.

Read the docs →
POST /v1/calls
curl -X POST https://sauti.shylock.ai/v1/calls \
  -H "Authorization: Bearer sk_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "assistantId": "asst_jane_collections",
    "phoneNumberId": "pn_jakarta_01",
    "customer": {
      "number": "+62812345678",
      "name": "Rina Wijaya"
    }
  }'
Response 200
{
  "id": "call_8f3k2j",
  "status": "ringing",
  "assistant": "asst_jane_collections",
  "from": "+62215551234",
  "to": "+62812345678",
  "created_at": "2026-04-02T10:30:00Z"
}

Build your first agent.

Connect a channel. Launch a campaign. Start reaching customers today.

Start building →Talk to us