Book and manage auto repair appointments with Retell AI 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 workflow has 39 nodes and runs when an HTTP POST request hits its webhook URL. Along the way it connects Google Calendar and Gmail.
How it runs
Trigger: When an HTTP POST request hits its webhook URL.
- Set Shop Configuration (Edit Fields (Set)): sets 9 fields: shopName, ownerEmail, calendarId…
- Validate Retell Call (If): checks a condition and branches into true / false
- Route by Function Type (Switch): routes items into 4 branches
- Send Unauthorized Response (Respond to Webhook): sends the response back to the webhook caller
- Parse Slot Availability Request (Code): runs custom JavaScript code
- Parse Appointment Booking Request (Code): runs custom JavaScript code
- Parse Cancellation Request (Code): runs custom JavaScript code
- Parse Rescheduling Request (Code): runs custom JavaScript code
- Send Unknown Function Response (Respond to Webhook): sends the response back to the webhook caller
- Retrieve Day Events from Calendar (Google Calendar): get many
…plus 28 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 (8)
- Webhook
n8n-nodes-base.webhook - Edit Fields (Set)
n8n-nodes-base.set - If
n8n-nodes-base.if - Switch
n8n-nodes-base.switch - Respond to Webhook
n8n-nodes-base.respondToWebhook - Code
n8n-nodes-base.code - Google Calendar
n8n-nodes-base.googleCalendar - Gmail
n8n-nodes-base.gmail
From the author
Quick overview This workflow exposes a webhook for Retell AI phone-agent functions to check availability, book, cancel, and reschedule auto repair appointments using Google Calendar, and it notifies the shop owner via Gmail when bookings change. How it works…