Urgent help troubleshooting my AI Voice Agent (VAPI + n8n)

Questions
1

Hey community, I have built a variation of the AI Voice Agent Receptionist of @Ed Hill.
The difference from the original tutorial is that:
If the caller leaves a message, it emails me the message.
If the caller wants a video call, it sends them an SMS with my Calendly link.
I’m testing now and seeing inconsistent behavior: sometimes everything works perfectly, and other times it doesn’t. Also, VAPI occasionally says “Sorry, I can’t send the SMS,” yet the SMS does arrive—so the status message doesn’t match the outcome.
Has anyone me troubleshoot please? :folded_hands:

Describe the problem/error/question

What is the error message (if any)?

Please share your workflow

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)

Share the output returned by the last node

Information on your n8n setup

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:
2

Hey!

I would start from system prompt for your models.

We need a view on your overall project se we understand better. Either an image, or paste code here.

3

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