Descriptions:
Zubair Trabzada demonstrates how to use Claude Code to build a production-ready voice AI system for a fictional HVAC company—without manually configuring a single workflow. By providing a comprehensive prompt to Claude Code, the system automatically creates a Retell AI voice agent complete with a custom system prompt, function definitions for calendar availability and appointment booking, post-call data extraction, and three fully wired n8n workflows including a post-call webhook routing step.
The tutorial walks through the complete setup: installing Claude Code (available on Anthropic’s $20/month Pro plan), structuring an effective prompt, obtaining and configuring a Retell AI API key, connecting an n8n Cloud instance, and watching Claude autonomously make API calls to build the agent on the user’s behalf. Trabzada also covers a step-by-step prompting alternative for those who prefer incremental builds, and shares both prompt templates for free through his community.
The result is a functional voice agent that can answer calls for a service business, check real-time calendar availability, book appointments, and route post-call summaries—all generated from a single Claude Code session. The video is aimed at non-developers and agency builders exploring how AI coding agents can collapse the time and expertise required to deploy voice AI into client workflows, with Retell AI and n8n serving as the primary integration targets.
📺 Source: Zubair Trabzada | AI Workshop · Published March 14, 2026
🏷️ Format: Tutorial Demo
