The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
Back to feedPost
🛠️ Show & Tell: AI Voice Receptionist — Retell AI + n8n + Google Sheets + Retool
Hey Contra community 👋
Just wrapped a full AI voice receptionist build for a home services client and wanted to share what went into it.
What it does:
Answers inbound calls 24/7 using Retell AI
Runs 3 real-time checks via n8n: service area · slot availability · customer lookup
Books the appointment live on the call — no double-booking
Logs to Google Sheets and fires a confirmation email automatically
Full Retool command center for the client to manage everything
The tricky part:
Retell AI has a toggle called "Payload: args only" — when enabled, it strips the parent wrapper from the webhook payload. Took a solid debug session to figure out why n8n kept returning empty data. Once I caught it and rebuilt the payload mapping, everything worked end to end.
Stack: Retell AI · n8n · Google Sheets · Retool MCP
Happy to answer questions on any part of the build — webhooks, n8n sub-workflow structure, Retool dashboard setup, whatever.
If you're a builder who gets overflow work in voice AI or home services automation, let's connect 🤝
Nice systems thinking in this build—the handoff between voice intake, availability checks, booking, and confirmation is clearly mapped to a real user outcome. The Retool command center also makes the automation legible instead of hiding it behind the scenes.
Thank you Rohan Ahmed!
Mapping it to a real user outcome was the main goal, and Retool made the execution so much cleaner. Appreciate the support!"
Strong build. I’m focused on the narrower Google Sheets / operational-control layer: duplicate prevention, booking/status logic, exception queues, reconciliation and handoff testing. If you ever get overflow where the voice/n8n layer is yours but a bounded Sheets/data-control...
Thanks, I appreciate the clear focus. I’ll keep you in mind if a Sheets or data-control module comes up that’s a good fit for a pilot.
The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
Related posts
My first n8n template is now live in the official n8n library, and it is free to use.
After a sales call, most people either rush the follow-up email or forget it. This workflow does the first draft for you.
When Fireflies finishes transcribing a call, it:
pulls the full transcript
uses OpenAI to write call notes: a summary, open questions, the next step and the outcome
saves a follow-up email to the contact as a Gmail draft
logs the call in Google Sheets and emails you the notes
Nothing is sent to the contact automatically. The follow-up waits in your drafts until you check it and press send.
Works with the free Fireflies plan and n8n Cloud.
Get it here: https://n8n.io/workflows/20963
Congrats on getting it approved. Drafting instead of auto-sending is the right default. One edge case worth a guard: calls where the transcript comes back empty or cut short, otherwise the model writes a confident follow-up from almost nothing.
AI Automation SaaS Website Design
AUTONIX is a modern AI automation SaaS website concept designed to help businesses streamline workflows, automate repetitive tasks, and manage AI agents more efficiently.
The design combines a clean, minimal interface with bold typography, futuristic visuals, interactive UI elements, and a seamless user experience. From AI-powered task automation to real-time productivity insights, every section is designed to communicate the value of intelligent automation in a clear and engaging way.
This project explores how thoughtful UI/UX design can make complex AI technology feel intuitive, accessible, and easy to use for modern businesses.
Services: SaaS Website Design, UI/UX Design, Landing Page Design, AI Product Design.
Same support inbox, one difference. Left keeps a human on every send. Right lets the AI send on its own once the draft confidence passes 90, refunds and cancellations excluded.
I built both in Relay this week and I still cannot decide.
Would you flip that switch for your own customers, and at what number?
0 voted
0%
2 voted
100%
2 votes
Closed
I'd flip it per topic, not per score. A 90 on a question the AI has answered hundreds of times is safe. A 90 on a question it has never seen is still a guess. Can Relay set a different threshold per topic?