I Built a Voice AI Agent Using Claude Code 🤖

I built a fully working voice AI receptionist that books appointments into Google Calendar. The whole thing took about 20 minutes. No drag and drop. No tutorials. Just Claude Code and a few prompts.

The agent answers phone calls, checks calendar availability, collects the caller's info, and books the appointment on the spot. I tested it live in the video and it handled everything.

Here's what I walk you through:

• Setting up Claude Code from scratch for a voice AI project

• Installing MCP servers for Vapi and n8n so Claude can build inside both platforms

• Getting all your API keys (Vapi, n8n, Google Calendar) step by step

• How Claude Code built the entire n8n workflow without me touching n8n once

• Testing the agent live and troubleshooting a calendar bug using Vapi logs

• How skills work in Claude Code and why they matter for repeatable builds

The part that got me was how simple the troubleshooting was. The first call didn't book to the calendar. I exported the Vapi logs, pasted them into Claude Code, and it found the issue and fixed it on its own. Second call worked perfectly.

If you've been curious about voice AI but thought you needed to be technical to build one, this video proves you don't. All the prompts are in the classroom under the Courses section so you can follow along and build it yourself.

Check out the full walkthrough here: https://youtu.be/ZkABnQ_StcI?si=fX2CDku-QIhM652J

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