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At a Glance

Key details about this service to help you decide. Generated by Zinn Hub, not the seller.

Platform & Stack

Vapi + FastAPI
Built on Vapi for voice AI and FastAPI for backend integrations — a production-grade stack suited for reliable, scalable voice automation.

Entry Deliverable

Proof of Concept First
The base package delivers a working proof of concept in 3 days, letting you hear and test the agent before committing to full deployment.

Integration Capability

Real-Time Webhooks & CRM Ready
Supports live webhook integrations with your existing systems, including CRMs and booking tools, enabling seamless workflow connections.

Use Case Coverage

5 Core Business Scenarios
Covers customer service, lead qualification, appointment scheduling, support routing, and sales follow-up — broad enough for most SMB phone automation needs.

Full Description

Transform your business with cutting-edge AI voice agents powered by Vapi and FastAPI! Zinn Digital ™ specialises in creating intelligent voice solutions that can handle customer enquiries, book appointments, qualify leads, and automate phone interactions 24/7.

What you get:

  • Custom AI voice agent built with Vapi platform
  • Robust FastAPI backend for seamless integrations
  • Natural conversation flows and voice personality
  • Real-time webhook integrations with your systems
  • Phone number setup and call routing
  • Knowledge base training with your business data
  • Complete deployment and testing

Perfect for:

  • Customer service automation
  • Lead qualification and booking
  • Appointment scheduling
  • Support ticket routing
  • Sales calls and follow-ups

Based in London, England, Zinn Digital ™ has 5+ years of AI and custom software development experience. We have extensive experience working with Vapi, FastAPI, and voice AI technologies. Each voice agent is custom-built for your specific use case with natural conversation abilities and seamless system integrations.

Ready to revolutionise your phone communications? Let's build your AI voice agent today!


This Zinn Will Include (Proof of Concept)

Proof of concept AI voice agent so you can understand what it will sound like with your workflow

Delivery: 3 days

Revisions: 0


Upgrade Options

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Revisions011

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Extra Information

Chat With Us

Chat On Telegram:https://t.me/ZinnDigital

Frequently Asked Questions

Vapi is a leading voice AI platform that provides realistic text-to-speech, speech-to-text, and conversation management. I use Vapi because it offers the most natural voice interactions, low latency, and excellent integration capabilities with business systems.

Absolutely! I'll build custom FastAPI webhooks to connect your voice agent with any system that has an API, including Salesforce, HubSpot, Calendly, Shopify, and custom databases. The agent can update records, create leads, and trigger workflows in real-time.

Very natural! Vapi uses advanced AI voices that are nearly indistinguishable from humans. I'll help you choose the perfect voice tone and personality for your brand, and program natural conversation flows with appropriate responses to various scenarios.

I'll need your business details, common customer questions, desired conversation flows, integration requirements, and any specific scripts or knowledge base content. I'll provide a detailed questionnaire to gather everything needed for your custom solution.

Yes! Vapi supports multiple languages and accent variations. I can configure your voice agent to detect the caller's language automatically and respond appropriately, or set it up for specific regional markets with localized responses.

I implement robust conversation guardrails, knowledge base boundaries, and fallback mechanisms in the FastAPI backend. The agent is trained on your specific business information and programmed to gracefully handle off-topic questions by redirecting to relevant topics or transferring to human agents

Customer Reviews

See what our customers say about this Zinn

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Luka has deep Vapi expertise and explains complex voice AI concepts perfectly. I was overwhelmed by the technical side, but he broke everything down clearly. His communication made it feel approachable instead of intimidating. Highly recommend!

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Build Custom Ai Voice Agents Using Vapi For Your Business

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