AI Voice Agent SaaS Platform — Complete Technical & Product Description

Overview

This SaaS platform enables businesses to create, deploy, and manage AI-powered voice agents without writing code. It provides a full suite for building intelligent call workflows, integrating telephony providers, analyzing conversations, and automating outbound & inbound communication at scale. Organizations can quickly deploy voice assistants that answer calls, collect data, qualify leads, route customers, or run campaigns—all enabled by AI models and real-time speech technologies.

Core Capabilities

1. No-Code Voice Agent Builder

Users can design fully custom AI agents through an intuitive, visual interface:

Add agent personality, tone, and behavior
Upload or embed Knowledge Base files (PDF, TXT, DOCX, URL crawling)
Configure call flows and fallback actions
Add tools such as webhooks, CRM sync, API calls, memory handling

Supports:

OpenAI for NLP reasoning
ElevenLabs for superior AI voice output
Deepgram / OpenAI Realtime for accurate transcription
Vapi for real-time call control, events, and agent orchestration

2. Campaign Management

Users can create, schedule, and run outbound call campaigns:

Upload CSV or add contact lists
Assign a voice agent to call contacts
Multi-threaded dialing with retry logic
Record call results: status, answers, intents, and key actions
Realtime dashboard showing success rate, pickup rate, call duration

3. Call Routing & Automation

The platform supports flexible call flow automation:

Inbound call routing based on rules
Agent → human escalation
Time-based routing
Transfer between departments
Voicemail detection
Post-call webhook triggers

4. Web Call & Browser Dialing

Users can place or receive calls directly inside the browser:

WebRTC calling using Vapi
No phone required
Perfect for support teams or agents
Logs and recordings automatically saved

5. Phone Numbers & Telephony Integration

Users can:

Buy Twilio numbers directly inside the platform
Connect their existing Vapi or Twilio accounts
Configure inbound/outbound capability
Assign numbers to campaigns or agents
Manage SIP settings, A2P rules, and country restrictions

6. Transcripts, Analytics & Insights

Every call generates:

Full transcript (with speaker labels)
Sentiment analysis
Intent detection
Call summary + key insights
KPI dashboard:
- Answer rate
- Average call duration
- Agent performance
- Most used intents
- Conversion metrics

7. Webhooks & Integrations

Users can connect the platform to:

CRMs (HubSpot, Salesforce, Pipedrive)
Google Sheets / internal tools
Custom API endpoints

Event-based triggers:

On call start
On transcript finalization
On summary generation
On contact updated
On campaign completed

8. Billing & Subscription

Using Stripe, the platform includes:

Usage-based billing (per minute / per call)
Monthly subscription plans
Add-ons (extra Twilio numbers, campaign minutes)
Auto top-up & overage handling
Customer portal for invoices & payment details

Technical Stack — Updated and Complete

Frontend

React (TypeScript) for dashboard, call flow builder, campaign UI
TailwindCSS / ShadCN for modern design system
WebRTC for web calling
React Query for async state management

Backend

Bun Runtime

Ultra-fast server runtime
Better concurrency than Node
Perfect for real-time events & calling webhooks

Framework Layer

Custom Bun server or lightweight framework (Hono/Elysia)
Handles:
- Auth
- API routes
- Webhook handlers
- Campaign scheduler
- Realtime call events

Database & ORM

PostgreSQL + Prisma

Highly reliable relational database
Prisma schema for clear data modeling
Supports vector search for knowledge base embeddings
Used for:
- Users & teams
- Agents
- Campaigns
- Contacts
- Calls
- Billing usage
- Webhook events

pgAdmin

Database management
Query debugging
Visual inspection of schema and logs

AI & Voice Engines

Vapi

Real-time call orchestration
Handles inbound/outbound calls
Live events (transcript, function calls, metadata)
Browser calling integration

OpenAI

LLM reasoning
Tool/function calling
Summaries, intents, actions
Embedding generation for knowledge base

Deepgram

Real-time low-latency transcription (STT)

ElevenLabs

High-quality TTS voices for natural agent speech

Telephony

Twilio

Number buying
Call routing
Outbound/inbound carrier compliance
SMS capability (optional add-on)
SIP trunking if needed

Infrastructure

AWS

EC2 for backend server
S3 for file uploads (KB, recordings)
CloudFront for CDN
SNS/SQS if using async queues
Route53 for DNS
Lambda optional for serverless tasks

Redis

Queue management for campaigns
Caching for agent sessions
Rate limiting
Real-time job tracking

End Results & Outcomes

✔ Faster Customer Onboarding

Users can create a full voice agent in minutes without developers.

✔ Clear, Actionable Call Insights

Full transcripts, summaries, sentiment, and metrics help businesses understand performance.

✔ Scalable Outbound Superpower

Run thousands of outbound calls simultaneously with no hardware or staff.

✔ Telephony Fully Automated

Buy numbers, assign agents, run campaigns, receive inbound calls—all inside the platform.

✔ Enterprise-Ready Architecture

Secure, multi-tenant, API-first SaaS powered by modern tech: Bun, Prisma, React, Postgres.

AI Voice Agent SaaS Platform

About This Project

Core Capabilities

Technical Stack — Updated and Complete

End Results & Outcomes

Visual Showcase

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