Vistara AI + Antigravity Integration

Integrate Voice AI with Antigravity in Seconds

Supercharge your Antigravity agentic workflows with low-latency (450–600 ms) AI voice calling and carrier telephony. Effortlessly equip your project with low-latency (450–600 ms) conversational telephony simply by copying and pasting the master prompt below into Antigravity.

Google Antigravity Master Prompt

Production Telephony & Voice Agent Prompt Ready

The prompt contains complete knowledge of the Vistara Connect REST API, low-latency Hindi telephony defaults, voice agent craftsmanship guidelines, and an automated flow to trigger a live test call to your personal mobile phone.

Download as .md File

Coding agents work best with the file: save it in your project (for example as VISTARA.md) and ask Antigravity to follow it.

1-Click Copy No Manual SDK Config Required Live Phone Call Experience Included Up to 200 free calls on Signup

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Interactive Telephony Workflow

What Happens When You Paste This Prompt into Antigravity

STEP 01

Account Verification

Antigravity asks if you are registered at app.vistaraai.in. If new, it guides you through phone OTP sign-up — ₹150 free credit with GSTIN (₹50 without) — up to 200 calls, since unanswered calls are never charged.

STEP 02

Agent Query & Selection

Uses your API key to list your existing voice agents. You can pick an active agent or let Antigravity construct a brand new dedicated persona.

STEP 03

Voice Prompt Craftsmanship

Constructs a 10-section prompt with native Devanagari Hindi spoken text, phone conversation mechanics, objection handling, and CRM deliverables.

STEP 04

Live Phone Test Call

Asks for your mobile number and dispatches a priority test call (x-call-type: test). Your phone rings immediately so you experience the AI conversation live!

STEP 05

Codebase Scaffolding

Scaffolds clean outbound call dispatchers, webhook receivers for post-call transcripts, rate-limiting guards, and .env files directly in your repository.

Developer Telephony Specs

Under the Hood: Vistara Connect REST Architecture

Everything Antigravity will wire up into your backend application:

Programmatic Agent Management (GET, POST, PUT /api/v1/agents)

Manage conversational agent lifecycles via REST. Agents default to Hindi with native Indian speech synthesis (meera or Aoede).

// Create Voice Agent (100 req/min limit)
curl -X POST https://app.vistaraai.in/api/v1/agents \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Customer Support RM",
    "language": "Hindi",
    "calling_method": "traditional",
    "voice": "meera",
    "first_message": "नमस्ते {{customer_name}} जी! मैं आपकी क्या सहायता कर सकती हूँ?",
    "system_instruction": "You are a courteous, expert AI support assistant...",
    "deliverables": [
      { "question": "Was customer interested?", "type": "fixed", "options": "Yes, No", "isGoal": true, "goalValue": "Yes" }
    ]
  }'

Antigravity Integration FAQ

How do I add AI calling to my app with Antigravity?

Copy the Vistara AI integration prompt on this page and paste it into Antigravity, or save it in your project as VISTARA.md and ask Antigravity to follow it. Antigravity then checks your Vistara account and API key, helps you create a voice agent, places a test call to your own phone, and writes the code that starts calls and receives each call's transcript, summary and extracted answers by webhook.

Can Antigravity run the whole setup by itself?

It turns the setup into a task plan and runs the API calls in the terminal, but it still asks you for the decisions that matter — what the voice agent should say and which phone number to call — and confirms the number before any call is placed.

Is my Vistara API key safe?

The prompt never contains your key. Antigravity is told to read it from the VISTARA_API_KEY environment variable, keep it out of source files, examples and logs, and use it only on the server — never in browser or mobile app code.

How much does it cost to try?

The prompt is free. New Vistara AI accounts get ₹150 free credit with GSTIN (₹50 without) — up to 200 calls, since unanswered calls are never charged. After that, calls are billed per connected minute from your prepaid wallet.

Ready to integrate voice AI into your product?

Sign up in under 60 seconds with your mobile number and get your live API key — plus ₹150 free credit with GSTIN (₹50 without) — up to 200 calls, since unanswered calls are never charged.

Claim Free Credit