I Built a Voice Agent Demo with Retell + n8n in Under 3 Hours
Client asked:
“Can we build a voice agent that books appointments — but only for qualified leads?”
I said: give me 3 hours.
🔧 What I Used:
  • Retell AI: for voice interaction (VAPI)
  • n8n: for logic, lead scoring, and booking
🧠 Logic:
  • Retell captures the call
  • n8n listens for trigger phrases (“I’m interested”)
  • Based on answers, assigns a score
  • Qualified? It books a Calendly slot
  • Not qualified? Ends politely and logs the interaction
💥 Bonus:
  • Logs everything into Notion
  • Slack ping when a hot lead books
It’s still a demo, but the client was blown away. Voice AI + no-code is no joke. Happy to share the JSON if you’re building something similar.
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2 comments
Sreeya Naidu
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I Built a Voice Agent Demo with Retell + n8n in Under 3 Hours
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