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Case Study

Build a real-time voice agent that only speaks the truth

January 12, 20258 min read

The problem we're solving

What if your customers could have a natural conversation with an AI assistant that knows your business inside and out, responds almost instantly, and never makes things up because it's anchored to your official documentation?

That's exactly what we built: a real-time voice agent that delivers:

Near-instant responses (200-400 milliseconds)
Natural conversations where users can interrupt anytime
Information pulled exclusively from your company content
Seamless experience across desktop and mobile
Voice Agent Interface

Security first: how RAG keeps your AI on a tight leash

The heart of this assistant is RAG (Retrieval-Augmented Generation). Think of it as the safety mechanism that prevents your AI from ever going off-script.

What is RAG?

RAG is like giving your assistant a locked filing cabinet containing only your approved company documents. Before answering any question, the assistant:

1.Searches your filing cabinet: It scans your documents, FAQs, product guides, internal policies
2.Retrieves relevant information: It selects the passages that answer the question
3.Responds only with what it found: It can't make things up or pull from other sources

Why this matters for your business

Without RAG, an AI assistant can:

Hallucinate answers that sound confident but are completely wrong
Share outdated information
Misrepresent your products or policies
Create legal and compliance risks

With RAG, you get:

Complete control: Only your approved documents are used as sources
Always up-to-date: Add new documents, and they're instantly available
Zero hallucinations: The assistant can't invent answers
Full traceability: You know exactly where every answer comes from

The tech stack

Here's the n8n workflow that powers the RAG system:

n8n RAG Workflow

The architecture includes:

Anthropic Claude: Powers the Master Knowledge agent for intelligent responses
Supabase Vector Store: Secure document storage with semantic search via pgvector
OpenAI Embeddings: Converts text into vector representations for fast retrieval
WebSocket: Persistent connection for lightning-fast back-and-forth
Next.js + React: Modern, responsive interface

How it works in practice

1. You feed the knowledge base

Upload your documents (FAQs, product guides, HR policies, etc.). The system intelligently chunks them and indexes everything for lightning-fast search.

2. A user asks a question

"What's your return policy?"

Voice Agent Listening

3. The assistant searches your documents

In milliseconds, it finds every relevant passage in your documentation about returns.

4. It formulates a natural response

Using only these documents, the assistant generates a clear, conversational answer.

5. It responds with voice

The response arrives in 200-400 milliseconds—as fast as a real conversation.


Use cases that drive ROI

Intelligent customer support: Handle common questions 24/7 with accurate information. Your human agents focus on complex cases that need a personal touch.
Automated onboarding: New hires can ask any question about processes, policies, and tools—and get instant, accurate answers.
Product knowledge assistant: Sales teams get instant voice access to all specs, pricing, and talking points. No more scrambling through documents during calls.
Continuous learning coach: A voice coach that knows all your training content and can answer learner questions on the fly.

Why this matters for SMBs and startups

Controlled costs

No need for 24/7 support teams. The assistant handles routine questions; your team handles what matters.

Instant scalability

Whether you have 10 or 10,000 users, the assistant delivers the same quality to everyone, simultaneously.

Eliminate inconsistency

No more conflicting answers. Everyone gets the same information, always current.

Modern experience

Your customers and employees get a smooth voice experience that matches the personal assistants they use every day.


The numbers that matter

200-400ms: End-to-end response time
<100ms: Reaction time when users interrupt
24/7: Unlimited availability
100%: Responses grounded in your official documentation

Ready to transform how people access your knowledge?

This technology isn't just for enterprise anymore. With the right tools and a well-designed architecture, any SMB or startup can deploy an intelligent, secure voice assistant.

Ready to automate your workflows?

Let's discuss how we can help you build scalable revenue workflows.