Schedule appointments from AI voice calls with VAPI, OpenAI, and Google Calendar
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 27 nodes and runs when an HTTP POST request hits its webhook URL. Along the way it connects OpenAI Chat Model, Google Sheets and Google Calendar.
How it runs
Trigger: When an HTTP POST request hits its webhook URL.
- Read Tool Call (Code): runs custom JavaScript code
- Enough To Act On? (If): checks a condition and branches into true / false
- Route By Action (Switch): routes items into 3 branches
- Respond Needs More Info (Respond to Webhook): sends the response back to the webhook caller
- Understand Requested Time (AI Agent): runs an AI agent, with model: Time Parsing Model; output parser: Time Window Format
- Build Booking Reference (Code): runs custom JavaScript code
- Find Booking By Reference (Google Sheets): uses Google Sheets
- Load Business Hours (Google Sheets): uses Google Sheets
- Re-Check Slot Is Free (Google Calendar): get many
- Booking Found? (If): checks a condition and branches into true / false
…plus 14 more steps. See the full node list below.
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (10)
- Webhook
n8n-nodes-base.webhook - Code
n8n-nodes-base.code - If
n8n-nodes-base.if - Respond to Webhook
n8n-nodes-base.respondToWebhook - Switch
n8n-nodes-base.switch - AI Agent
@n8n/n8n-nodes-langchain.agent - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - Structured Output Parser
@n8n/n8n-nodes-langchain.outputParserStructured - Google Sheets
n8n-nodes-base.googleSheets - Google Calendar
n8n-nodes-base.googleCalendar
From the author
DESCRIPTION Automate appointment booking through voice calls by integrating VAPI voice agent with AI-powered calendar management. This workflow receives scheduling requests via webhook, uses OpenAI to intelligently check availability, books appointments in…